/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/string_concat-noarr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 12:33:25,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 12:33:25,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 12:33:25,745 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 12:33:25,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 12:33:25,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 12:33:25,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 12:33:25,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 12:33:25,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 12:33:25,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 12:33:25,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 12:33:25,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 12:33:25,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 12:33:25,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 12:33:25,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 12:33:25,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 12:33:25,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 12:33:25,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 12:33:25,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 12:33:25,767 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 12:33:25,768 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 12:33:25,782 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 12:33:25,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 12:33:25,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 12:33:25,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 12:33:25,783 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 12:33:25,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 12:33:25,784 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 12:33:25,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 12:33:25,784 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 12:33:25,784 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 12:33:25,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 12:33:25,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 12:33:25,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 12:33:25,785 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 12:33:25,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 12:33:25,785 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 12:33:25,785 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 12:33:25,785 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 12:33:25,785 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 12:33:25,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 12:33:25,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:33:25,786 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 12:33:25,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 12:33:25,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 12:33:25,786 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 12:33:25,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 12:33:25,787 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 12:33:25,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 12:33:25,787 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 12:33:26,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 12:33:26,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 12:33:26,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 12:33:26,066 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 12:33:26,066 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 12:33:26,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/string_concat-noarr.i [2021-05-02 12:33:26,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28ba418f/e9b615be2a634c17a23d3acafda430e5/FLAG6735b7973 [2021-05-02 12:33:26,430 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 12:33:26,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/string_concat-noarr.i [2021-05-02 12:33:26,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28ba418f/e9b615be2a634c17a23d3acafda430e5/FLAG6735b7973 [2021-05-02 12:33:26,846 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a28ba418f/e9b615be2a634c17a23d3acafda430e5 [2021-05-02 12:33:26,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 12:33:26,848 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 12:33:26,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 12:33:26,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 12:33:26,859 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 12:33:26,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:33:26" (1/1) ... [2021-05-02 12:33:26,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74231622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:33:26, skipping insertion in model container [2021-05-02 12:33:26,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:33:26" (1/1) ... [2021-05-02 12:33:26,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 12:33:26,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 12:33:26,949 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/string_concat-noarr.i[893,906] [2021-05-02 12:33:26,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:33:26,960 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 12:33:26,967 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/string_concat-noarr.i[893,906] [2021-05-02 12:33:26,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:33:26,978 INFO L208 MainTranslator]: Completed translation [2021-05-02 12:33:26,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:33:26 WrapperNode [2021-05-02 12:33:26,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 12:33:26,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 12:33:26,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 12:33:26,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 12:33:27,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:33:26" (1/1) ... [2021-05-02 12:33:27,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:33:26" (1/1) ... [2021-05-02 12:33:27,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:33:26" (1/1) ... [2021-05-02 12:33:27,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:33:26" (1/1) ... [2021-05-02 12:33:27,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:33:26" (1/1) ... [2021-05-02 12:33:27,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:33:26" (1/1) ... [2021-05-02 12:33:27,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:33:26" (1/1) ... [2021-05-02 12:33:27,033 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 12:33:27,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 12:33:27,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 12:33:27,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 12:33:27,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:33:26" (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 12:33:27,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 12:33:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 12:33:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 12:33:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 12:33:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 12:33:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 12:33:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 12:33:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 12:33:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 12:33:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 12:33:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 12:33:27,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 12:33:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 12:33:27,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 12:33:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 12:33:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 12:33:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 12:33:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 12:33:27,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 12:33:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 12:33:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 12:33:27,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 12:33:27,317 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 12:33:27,317 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 12:33:27,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:33:27 BoogieIcfgContainer [2021-05-02 12:33:27,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 12:33:27,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 12:33:27,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 12:33:27,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 12:33:27,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 12:33:26" (1/3) ... [2021-05-02 12:33:27,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e87d6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:33:27, skipping insertion in model container [2021-05-02 12:33:27,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:33:26" (2/3) ... [2021-05-02 12:33:27,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e87d6fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:33:27, skipping insertion in model container [2021-05-02 12:33:27,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:33:27" (3/3) ... [2021-05-02 12:33:27,327 INFO L111 eAbstractionObserver]: Analyzing ICFG string_concat-noarr.i [2021-05-02 12:33:27,330 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 12:33:27,332 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 12:33:27,352 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 12:33:27,365 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 12:33:27,365 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 12:33:27,365 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 12:33:27,365 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 12:33:27,365 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 12:33:27,366 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 12:33:27,366 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 12:33:27,366 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 12:33:27,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 12:33:27,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 12:33:27,378 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:27,378 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:27,378 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:27,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:27,381 INFO L82 PathProgramCache]: Analyzing trace with hash -623416428, now seen corresponding path program 1 times [2021-05-02 12:33:27,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:27,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074157931] [2021-05-02 12:33:27,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:27,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:27,532 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 12:33:27,532 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:27,532 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074157931] [2021-05-02 12:33:27,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074157931] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:33:27,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:33:27,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 12:33:27,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693741769] [2021-05-02 12:33:27,536 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 12:33:27,536 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:27,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 12:33:27,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 12:33:27,545 INFO L87 Difference]: Start difference. First operand has 26 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:27,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:27,575 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-05-02 12:33:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 12:33:27,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-05-02 12:33:27,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:27,581 INFO L225 Difference]: With dead ends: 43 [2021-05-02 12:33:27,581 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 12:33:27,584 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 36.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 12:33:27,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 12:33:27,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-02 12:33:27,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:27,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-05-02 12:33:27,609 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2021-05-02 12:33:27,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:27,610 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-05-02 12:33:27,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:27,611 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-05-02 12:33:27,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-02 12:33:27,611 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:27,612 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:27,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 12:33:27,612 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:27,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:27,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1308012743, now seen corresponding path program 1 times [2021-05-02 12:33:27,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:27,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785705864] [2021-05-02 12:33:27,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:27,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:27,765 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 12:33:27,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:27,766 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785705864] [2021-05-02 12:33:27,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785705864] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:33:27,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:33:27,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 12:33:27,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625399779] [2021-05-02 12:33:27,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 12:33:27,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:27,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 12:33:27,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 12:33:27,771 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:27,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:27,902 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-05-02 12:33:27,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 12:33:27,903 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-02 12:33:27,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:27,903 INFO L225 Difference]: With dead ends: 29 [2021-05-02 12:33:27,903 INFO L226 Difference]: Without dead ends: 23 [2021-05-02 12:33:27,904 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 90.7ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 12:33:27,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-05-02 12:33:27,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2021-05-02 12:33:27,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:27,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2021-05-02 12:33:27,911 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 17 [2021-05-02 12:33:27,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:27,911 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2021-05-02 12:33:27,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:27,911 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2021-05-02 12:33:27,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-05-02 12:33:27,912 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:27,912 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:27,912 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 12:33:27,912 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:27,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:27,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1066675892, now seen corresponding path program 1 times [2021-05-02 12:33:27,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:27,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885628369] [2021-05-02 12:33:27,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:27,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:27,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:27,973 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:27,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885628369] [2021-05-02 12:33:27,973 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885628369] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:27,973 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653353502] [2021-05-02 12:33:27,973 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 12:33:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:28,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 12:33:28,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:28,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:28,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:28,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:28,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:28,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:28,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653353502] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:28,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:28,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 10 [2021-05-02 12:33:28,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121194855] [2021-05-02 12:33:28,127 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 12:33:28,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:28,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 12:33:28,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-05-02 12:33:28,128 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 10 states, 10 states have (on average 2.4) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:28,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:28,322 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-05-02 12:33:28,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 12:33:28,322 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-05-02 12:33:28,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:28,324 INFO L225 Difference]: With dead ends: 38 [2021-05-02 12:33:28,324 INFO L226 Difference]: Without dead ends: 32 [2021-05-02 12:33:28,324 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 152.5ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-05-02 12:33:28,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-05-02 12:33:28,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2021-05-02 12:33:28,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.15) internal successors, (23), 20 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:28,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-05-02 12:33:28,327 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 19 [2021-05-02 12:33:28,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:28,327 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-05-02 12:33:28,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.4) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:28,328 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-05-02 12:33:28,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-05-02 12:33:28,328 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:28,328 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:28,540 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 12:33:28,541 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:28,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:28,542 INFO L82 PathProgramCache]: Analyzing trace with hash -1780147345, now seen corresponding path program 2 times [2021-05-02 12:33:28,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:28,543 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968134597] [2021-05-02 12:33:28,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:28,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:28,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:28,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:28,637 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:28,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968134597] [2021-05-02 12:33:28,637 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968134597] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:28,637 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008364610] [2021-05-02 12:33:28,637 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 12:33:28,684 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:33:28,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:28,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 12:33:28,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:28,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:28,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:28,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:28,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:28,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:28,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:28,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:28,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008364610] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:28,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:28,779 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 11 [2021-05-02 12:33:28,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645376368] [2021-05-02 12:33:28,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 12:33:28,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:28,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 12:33:28,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-05-02 12:33:28,783 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:28,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:28,967 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2021-05-02 12:33:28,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 12:33:28,967 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-05-02 12:33:28,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:28,969 INFO L225 Difference]: With dead ends: 43 [2021-05-02 12:33:28,969 INFO L226 Difference]: Without dead ends: 37 [2021-05-02 12:33:28,970 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 130.5ms TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:33:28,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-05-02 12:33:28,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2021-05-02 12:33:28,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:28,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-05-02 12:33:28,981 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2021-05-02 12:33:28,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:28,981 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-05-02 12:33:28,982 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:28,982 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-05-02 12:33:28,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-02 12:33:28,983 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:28,983 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:29,197 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:33:29,198 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:29,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:29,198 INFO L82 PathProgramCache]: Analyzing trace with hash -1683110550, now seen corresponding path program 3 times [2021-05-02 12:33:29,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:29,198 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118219965] [2021-05-02 12:33:29,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:29,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:29,334 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:29,334 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:29,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118219965] [2021-05-02 12:33:29,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118219965] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:29,334 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721493966] [2021-05-02 12:33:29,335 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 12:33:29,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 12:33:29,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:29,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 12:33:29,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:29,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:29,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:29,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:29,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:29,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:29,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:29,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:29,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:29,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:29,527 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721493966] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:29,527 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:29,527 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-05-02 12:33:29,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604511924] [2021-05-02 12:33:29,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 12:33:29,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:29,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 12:33:29,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:33:29,528 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:29,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:29,733 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2021-05-02 12:33:29,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 12:33:29,736 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-05-02 12:33:29,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:29,739 INFO L225 Difference]: With dead ends: 48 [2021-05-02 12:33:29,739 INFO L226 Difference]: Without dead ends: 42 [2021-05-02 12:33:29,742 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 195.9ms TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-05-02 12:33:29,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-02 12:33:29,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2021-05-02 12:33:29,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:29,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-05-02 12:33:29,763 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 23 [2021-05-02 12:33:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:29,763 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-05-02 12:33:29,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 9 states have internal predecessors, (28), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-05-02 12:33:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-05-02 12:33:29,766 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:29,766 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:29,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:33:29,981 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:29,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:29,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1374936229, now seen corresponding path program 4 times [2021-05-02 12:33:29,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:29,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847182221] [2021-05-02 12:33:29,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:30,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:30,096 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:30,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847182221] [2021-05-02 12:33:30,096 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847182221] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:30,096 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895948312] [2021-05-02 12:33:30,096 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 12:33:30,148 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:33:30,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:30,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 12:33:30,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:30,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,255 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:30,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895948312] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:30,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:30,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2021-05-02 12:33:30,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752297752] [2021-05-02 12:33:30,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 12:33:30,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:30,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 12:33:30,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-05-02 12:33:30,261 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:30,502 INFO L93 Difference]: Finished difference Result 53 states and 59 transitions. [2021-05-02 12:33:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 12:33:30,503 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-05-02 12:33:30,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:30,505 INFO L225 Difference]: With dead ends: 53 [2021-05-02 12:33:30,505 INFO L226 Difference]: Without dead ends: 47 [2021-05-02 12:33:30,505 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 204.5ms TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:33:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-05-02 12:33:30,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2021-05-02 12:33:30,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 35 states have internal predecessors, (41), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:30,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2021-05-02 12:33:30,508 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 25 [2021-05-02 12:33:30,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:30,508 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2021-05-02 12:33:30,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:30,508 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2021-05-02 12:33:30,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-02 12:33:30,508 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:30,508 INFO L523 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:30,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:33:30,730 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:30,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:30,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1894706912, now seen corresponding path program 5 times [2021-05-02 12:33:30,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:30,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793757415] [2021-05-02 12:33:30,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:30,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:30,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:30,866 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:30,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:30,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793757415] [2021-05-02 12:33:30,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793757415] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:30,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728236003] [2021-05-02 12:33:30,867 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 12:33:30,935 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-02 12:33:30,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:30,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 12:33:30,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:30,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:30,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,048 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:31,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728236003] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:31,049 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:31,049 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 14 [2021-05-02 12:33:31,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835124716] [2021-05-02 12:33:31,050 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 12:33:31,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:31,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 12:33:31,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2021-05-02 12:33:31,051 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 11 states have internal predecessors, (32), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:31,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:31,315 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2021-05-02 12:33:31,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 12:33:31,315 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 11 states have internal predecessors, (32), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-05-02 12:33:31,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:31,317 INFO L225 Difference]: With dead ends: 58 [2021-05-02 12:33:31,317 INFO L226 Difference]: Without dead ends: 52 [2021-05-02 12:33:31,317 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 207.7ms TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2021-05-02 12:33:31,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-05-02 12:33:31,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2021-05-02 12:33:31,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:31,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2021-05-02 12:33:31,338 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 27 [2021-05-02 12:33:31,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:31,339 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2021-05-02 12:33:31,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 11 states have internal predecessors, (32), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:31,339 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2021-05-02 12:33:31,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-05-02 12:33:31,340 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:31,340 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:31,555 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-05-02 12:33:31,555 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:31,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:31,556 INFO L82 PathProgramCache]: Analyzing trace with hash -105704741, now seen corresponding path program 6 times [2021-05-02 12:33:31,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:31,556 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616584161] [2021-05-02 12:33:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:31,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:31,694 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:31,694 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:31,694 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616584161] [2021-05-02 12:33:31,694 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616584161] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:31,695 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040599100] [2021-05-02 12:33:31,695 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 12:33:31,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 12:33:31,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:31,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 12:33:31,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:31,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:31,873 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:31,873 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040599100] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:31,873 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:31,873 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 15 [2021-05-02 12:33:31,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834983013] [2021-05-02 12:33:31,874 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 12:33:31,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:31,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 12:33:31,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-05-02 12:33:31,874 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:32,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:32,164 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2021-05-02 12:33:32,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 12:33:32,164 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-05-02 12:33:32,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:32,166 INFO L225 Difference]: With dead ends: 63 [2021-05-02 12:33:32,166 INFO L226 Difference]: Without dead ends: 57 [2021-05-02 12:33:32,167 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 293.6ms TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-05-02 12:33:32,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-05-02 12:33:32,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2021-05-02 12:33:32,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:32,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-05-02 12:33:32,178 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 29 [2021-05-02 12:33:32,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:32,179 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-05-02 12:33:32,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 12 states have internal predecessors, (34), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:32,179 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-05-02 12:33:32,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-05-02 12:33:32,182 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:32,183 INFO L523 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:32,396 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:33:32,397 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:32,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:32,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1138463190, now seen corresponding path program 7 times [2021-05-02 12:33:32,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:32,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382973008] [2021-05-02 12:33:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:32,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:32,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:32,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:32,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382973008] [2021-05-02 12:33:32,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382973008] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:32,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145209770] [2021-05-02 12:33:32,541 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 12:33:32,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:32,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 12:33:32,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:32,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:32,743 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:32,743 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145209770] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:32,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:32,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 16 [2021-05-02 12:33:32,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261327696] [2021-05-02 12:33:32,745 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 12:33:32,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:32,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 12:33:32,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:33:32,746 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:33,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:33,123 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2021-05-02 12:33:33,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 12:33:33,123 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-05-02 12:33:33,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:33,124 INFO L225 Difference]: With dead ends: 68 [2021-05-02 12:33:33,124 INFO L226 Difference]: Without dead ends: 62 [2021-05-02 12:33:33,125 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 320.8ms TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2021-05-02 12:33:33,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-02 12:33:33,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2021-05-02 12:33:33,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:33,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2021-05-02 12:33:33,128 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 31 [2021-05-02 12:33:33,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:33,128 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2021-05-02 12:33:33,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 13 states have internal predecessors, (36), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:33,128 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2021-05-02 12:33:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-05-02 12:33:33,129 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:33,129 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:33,344 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:33:33,344 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:33,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:33,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1512030703, now seen corresponding path program 8 times [2021-05-02 12:33:33,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:33,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007166794] [2021-05-02 12:33:33,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:33,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:33,495 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:33,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007166794] [2021-05-02 12:33:33,496 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007166794] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:33,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971371394] [2021-05-02 12:33:33,496 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 12:33:33,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:33:33,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:33,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 12:33:33,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:33,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:33,676 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:33,677 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971371394] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:33,677 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:33,677 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 17 [2021-05-02 12:33:33,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959547767] [2021-05-02 12:33:33,677 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 12:33:33,677 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:33,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 12:33:33,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-05-02 12:33:33,678 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:34,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:34,110 INFO L93 Difference]: Finished difference Result 73 states and 83 transitions. [2021-05-02 12:33:34,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 12:33:34,111 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-05-02 12:33:34,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:34,113 INFO L225 Difference]: With dead ends: 73 [2021-05-02 12:33:34,113 INFO L226 Difference]: Without dead ends: 67 [2021-05-02 12:33:34,114 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 369.9ms TimeCoverageRelationStatistics Valid=200, Invalid=556, Unknown=0, NotChecked=0, Total=756 [2021-05-02 12:33:34,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-05-02 12:33:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 60. [2021-05-02 12:33:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 55 states have internal predecessors, (65), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:34,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2021-05-02 12:33:34,139 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 33 [2021-05-02 12:33:34,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:34,140 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2021-05-02 12:33:34,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 2.235294117647059) internal successors, (38), 14 states have internal predecessors, (38), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:34,140 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2021-05-02 12:33:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-05-02 12:33:34,142 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:34,142 INFO L523 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:34,357 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-05-02 12:33:34,357 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:34,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:34,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1721055348, now seen corresponding path program 9 times [2021-05-02 12:33:34,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:34,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537300988] [2021-05-02 12:33:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:34,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:34,525 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:34,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537300988] [2021-05-02 12:33:34,525 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537300988] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:34,525 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40650782] [2021-05-02 12:33:34,525 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 12:33:34,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 12:33:34,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:34,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 12:33:34,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:34,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:34,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40650782] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:34,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:34,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 18 [2021-05-02 12:33:34,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850803473] [2021-05-02 12:33:34,749 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 12:33:34,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:34,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 12:33:34,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-05-02 12:33:34,749 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:35,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:35,116 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2021-05-02 12:33:35,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 12:33:35,116 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2021-05-02 12:33:35,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:35,117 INFO L225 Difference]: With dead ends: 78 [2021-05-02 12:33:35,117 INFO L226 Difference]: Without dead ends: 72 [2021-05-02 12:33:35,132 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 366.9ms TimeCoverageRelationStatistics Valid=234, Invalid=636, Unknown=0, NotChecked=0, Total=870 [2021-05-02 12:33:35,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-05-02 12:33:35,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 65. [2021-05-02 12:33:35,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 60 states have internal predecessors, (71), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:35,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2021-05-02 12:33:35,134 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 35 [2021-05-02 12:33:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:35,134 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2021-05-02 12:33:35,134 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 15 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:35,134 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2021-05-02 12:33:35,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-05-02 12:33:35,135 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:35,135 INFO L523 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:35,345 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:33:35,345 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:35,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:35,346 INFO L82 PathProgramCache]: Analyzing trace with hash -730276281, now seen corresponding path program 10 times [2021-05-02 12:33:35,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:35,347 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707150990] [2021-05-02 12:33:35,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:35,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:35,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:35,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:35,530 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:35,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707150990] [2021-05-02 12:33:35,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707150990] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:35,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699994223] [2021-05-02 12:33:35,530 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 12:33:35,613 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:33:35,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:35,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 12:33:35,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:35,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:35,734 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:35,734 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699994223] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:35,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:35,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 19 [2021-05-02 12:33:35,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683359190] [2021-05-02 12:33:35,735 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 12:33:35,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:35,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 12:33:35,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-05-02 12:33:35,736 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 16 states have internal predecessors, (42), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:36,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:36,204 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2021-05-02 12:33:36,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 12:33:36,204 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 16 states have internal predecessors, (42), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-05-02 12:33:36,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:36,205 INFO L225 Difference]: With dead ends: 83 [2021-05-02 12:33:36,205 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 12:33:36,206 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 432.1ms TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2021-05-02 12:33:36,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 12:33:36,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2021-05-02 12:33:36,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 65 states have internal predecessors, (77), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 81 transitions. [2021-05-02 12:33:36,209 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 81 transitions. Word has length 37 [2021-05-02 12:33:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:36,209 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 81 transitions. [2021-05-02 12:33:36,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.210526315789474) internal successors, (42), 16 states have internal predecessors, (42), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:36,209 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 81 transitions. [2021-05-02 12:33:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-02 12:33:36,210 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:36,210 INFO L523 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:36,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:33:36,427 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:36,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:36,427 INFO L82 PathProgramCache]: Analyzing trace with hash -2074332606, now seen corresponding path program 11 times [2021-05-02 12:33:36,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:36,427 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016373763] [2021-05-02 12:33:36,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:36,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:36,559 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:36,559 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:36,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016373763] [2021-05-02 12:33:36,559 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016373763] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:36,559 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1333741075] [2021-05-02 12:33:36,560 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 12:33:36,607 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-05-02 12:33:36,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:36,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 12:33:36,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:36,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:36,714 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:36,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1333741075] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:36,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:36,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 20 [2021-05-02 12:33:36,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933611400] [2021-05-02 12:33:36,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 12:33:36,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:36,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 12:33:36,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:33:36,715 INFO L87 Difference]: Start difference. First operand 70 states and 81 transitions. Second operand has 20 states, 20 states have (on average 2.2) internal successors, (44), 17 states have internal predecessors, (44), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:37,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:37,145 INFO L93 Difference]: Finished difference Result 88 states and 101 transitions. [2021-05-02 12:33:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 12:33:37,146 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 17 states have internal predecessors, (44), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-05-02 12:33:37,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:37,146 INFO L225 Difference]: With dead ends: 88 [2021-05-02 12:33:37,146 INFO L226 Difference]: Without dead ends: 82 [2021-05-02 12:33:37,147 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 354.4ms TimeCoverageRelationStatistics Valid=311, Invalid=811, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 12:33:37,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-02 12:33:37,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 75. [2021-05-02 12:33:37,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.1857142857142857) internal successors, (83), 70 states have internal predecessors, (83), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2021-05-02 12:33:37,152 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 39 [2021-05-02 12:33:37,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:37,153 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2021-05-02 12:33:37,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 17 states have internal predecessors, (44), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2021-05-02 12:33:37,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-05-02 12:33:37,154 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:37,154 INFO L523 BasicCegarLoop]: trace histogram [13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:37,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 12:33:37,357 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:37,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:37,357 INFO L82 PathProgramCache]: Analyzing trace with hash -927304835, now seen corresponding path program 12 times [2021-05-02 12:33:37,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:37,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463517305] [2021-05-02 12:33:37,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:37,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:37,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:37,501 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:37,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:37,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463517305] [2021-05-02 12:33:37,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463517305] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:37,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138638373] [2021-05-02 12:33:37,501 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 12:33:37,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-05-02 12:33:37,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:37,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 12:33:37,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:37,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:37,669 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:37,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138638373] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:37,669 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:37,669 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 21 [2021-05-02 12:33:37,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055855386] [2021-05-02 12:33:37,670 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 12:33:37,670 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:37,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 12:33:37,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2021-05-02 12:33:37,670 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:38,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:38,119 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2021-05-02 12:33:38,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 12:33:38,119 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-05-02 12:33:38,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:38,120 INFO L225 Difference]: With dead ends: 93 [2021-05-02 12:33:38,121 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 12:33:38,122 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 395.2ms TimeCoverageRelationStatistics Valid=354, Invalid=906, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 12:33:38,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 12:33:38,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 80. [2021-05-02 12:33:38,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 75 states have (on average 1.1866666666666668) internal successors, (89), 75 states have internal predecessors, (89), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:38,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 93 transitions. [2021-05-02 12:33:38,124 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 93 transitions. Word has length 41 [2021-05-02 12:33:38,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:38,125 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 93 transitions. [2021-05-02 12:33:38,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 18 states have internal predecessors, (46), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:38,125 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 93 transitions. [2021-05-02 12:33:38,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 12:33:38,125 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:38,125 INFO L523 BasicCegarLoop]: trace histogram [14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:38,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 12:33:38,329 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:38,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:38,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1854755320, now seen corresponding path program 13 times [2021-05-02 12:33:38,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:38,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86141577] [2021-05-02 12:33:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:38,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:38,470 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:38,470 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:38,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86141577] [2021-05-02 12:33:38,470 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86141577] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:38,470 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077119066] [2021-05-02 12:33:38,470 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 12:33:38,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:38,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 12:33:38,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:38,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:38,640 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:38,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077119066] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:38,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:38,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 22 [2021-05-02 12:33:38,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266408959] [2021-05-02 12:33:38,640 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 12:33:38,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:38,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 12:33:38,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2021-05-02 12:33:38,641 INFO L87 Difference]: Start difference. First operand 80 states and 93 transitions. Second operand has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 19 states have internal predecessors, (48), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:39,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:39,103 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2021-05-02 12:33:39,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 12:33:39,103 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 19 states have internal predecessors, (48), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-05-02 12:33:39,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:39,104 INFO L225 Difference]: With dead ends: 98 [2021-05-02 12:33:39,104 INFO L226 Difference]: Without dead ends: 92 [2021-05-02 12:33:39,104 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 432.6ms TimeCoverageRelationStatistics Valid=400, Invalid=1006, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 12:33:39,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-02 12:33:39,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 85. [2021-05-02 12:33:39,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 80 states have (on average 1.1875) internal successors, (95), 80 states have internal predecessors, (95), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:39,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 99 transitions. [2021-05-02 12:33:39,106 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 99 transitions. Word has length 43 [2021-05-02 12:33:39,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:39,106 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 99 transitions. [2021-05-02 12:33:39,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.1818181818181817) internal successors, (48), 19 states have internal predecessors, (48), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:39,106 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 99 transitions. [2021-05-02 12:33:39,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 12:33:39,107 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:39,107 INFO L523 BasicCegarLoop]: trace histogram [15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:39,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-05-02 12:33:39,309 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:39,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:39,309 INFO L82 PathProgramCache]: Analyzing trace with hash -350061133, now seen corresponding path program 14 times [2021-05-02 12:33:39,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:39,309 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508348898] [2021-05-02 12:33:39,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:39,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:39,482 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:39,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508348898] [2021-05-02 12:33:39,482 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508348898] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:39,482 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366177309] [2021-05-02 12:33:39,482 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 12:33:39,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:33:39,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:39,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 12:33:39,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:39,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:39,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366177309] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:39,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:39,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 23 [2021-05-02 12:33:39,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192435013] [2021-05-02 12:33:39,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 12:33:39,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:39,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 12:33:39,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2021-05-02 12:33:39,634 INFO L87 Difference]: Start difference. First operand 85 states and 99 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 20 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:40,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:40,114 INFO L93 Difference]: Finished difference Result 103 states and 119 transitions. [2021-05-02 12:33:40,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 12:33:40,114 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 20 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-05-02 12:33:40,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:40,115 INFO L225 Difference]: With dead ends: 103 [2021-05-02 12:33:40,115 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 12:33:40,115 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 469.3ms TimeCoverageRelationStatistics Valid=449, Invalid=1111, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 12:33:40,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 12:33:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 90. [2021-05-02 12:33:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 85 states have (on average 1.188235294117647) internal successors, (101), 85 states have internal predecessors, (101), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2021-05-02 12:33:40,117 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 45 [2021-05-02 12:33:40,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:40,117 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2021-05-02 12:33:40,117 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 20 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:40,118 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2021-05-02 12:33:40,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-05-02 12:33:40,118 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:40,118 INFO L523 BasicCegarLoop]: trace histogram [16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:40,336 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:33:40,337 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:40,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1759795538, now seen corresponding path program 15 times [2021-05-02 12:33:40,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:40,337 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623887289] [2021-05-02 12:33:40,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:40,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:40,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:40,512 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:40,512 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:40,512 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623887289] [2021-05-02 12:33:40,512 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623887289] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:40,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982752960] [2021-05-02 12:33:40,513 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 12:33:40,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-05-02 12:33:40,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:40,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 12:33:40,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:40,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:40,674 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:40,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982752960] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:40,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:40,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 24 [2021-05-02 12:33:40,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731685921] [2021-05-02 12:33:40,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 12:33:40,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:40,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 12:33:40,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=369, Unknown=0, NotChecked=0, Total=552 [2021-05-02 12:33:40,675 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:41,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:41,145 INFO L93 Difference]: Finished difference Result 108 states and 125 transitions. [2021-05-02 12:33:41,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 12:33:41,145 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-05-02 12:33:41,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:41,146 INFO L225 Difference]: With dead ends: 108 [2021-05-02 12:33:41,146 INFO L226 Difference]: Without dead ends: 102 [2021-05-02 12:33:41,147 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 492.4ms TimeCoverageRelationStatistics Valid=501, Invalid=1221, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 12:33:41,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-05-02 12:33:41,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 95. [2021-05-02 12:33:41,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 90 states have internal predecessors, (107), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:41,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2021-05-02 12:33:41,149 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 47 [2021-05-02 12:33:41,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:41,149 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2021-05-02 12:33:41,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.1666666666666665) internal successors, (52), 21 states have internal predecessors, (52), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2021-05-02 12:33:41,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-05-02 12:33:41,149 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:41,149 INFO L523 BasicCegarLoop]: trace histogram [17, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:41,356 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 12:33:41,357 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:41,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:41,357 INFO L82 PathProgramCache]: Analyzing trace with hash 695106793, now seen corresponding path program 16 times [2021-05-02 12:33:41,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:41,357 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437243793] [2021-05-02 12:33:41,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:41,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:41,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:41,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:41,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437243793] [2021-05-02 12:33:41,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437243793] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:41,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175004290] [2021-05-02 12:33:41,573 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 12:33:41,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:33:41,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:41,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 12:33:41,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:41,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:41,758 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:41,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175004290] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:41,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:41,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 25 [2021-05-02 12:33:41,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366856351] [2021-05-02 12:33:41,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 12:33:41,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:41,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 12:33:41,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2021-05-02 12:33:41,759 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand has 25 states, 25 states have (on average 2.16) internal successors, (54), 22 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:42,296 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2021-05-02 12:33:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 12:33:42,296 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 22 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-05-02 12:33:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:42,297 INFO L225 Difference]: With dead ends: 113 [2021-05-02 12:33:42,297 INFO L226 Difference]: Without dead ends: 107 [2021-05-02 12:33:42,297 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 596.3ms TimeCoverageRelationStatistics Valid=556, Invalid=1336, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 12:33:42,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-05-02 12:33:42,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 100. [2021-05-02 12:33:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 95 states have (on average 1.1894736842105262) internal successors, (113), 95 states have internal predecessors, (113), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:42,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 117 transitions. [2021-05-02 12:33:42,299 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 117 transitions. Word has length 49 [2021-05-02 12:33:42,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:42,299 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 117 transitions. [2021-05-02 12:33:42,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.16) internal successors, (54), 22 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:42,300 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 117 transitions. [2021-05-02 12:33:42,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-02 12:33:42,300 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:42,300 INFO L523 BasicCegarLoop]: trace histogram [18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:42,507 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 12:33:42,507 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:42,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:42,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1919201380, now seen corresponding path program 17 times [2021-05-02 12:33:42,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:42,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006854982] [2021-05-02 12:33:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:42,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:42,717 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:42,717 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:42,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006854982] [2021-05-02 12:33:42,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006854982] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:42,717 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33415519] [2021-05-02 12:33:42,717 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 12:33:42,761 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-05-02 12:33:42,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:42,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 24 conjunts are in the unsatisfiable core [2021-05-02 12:33:42,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:42,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:42,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33415519] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:42,878 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:42,878 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 26 [2021-05-02 12:33:42,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223463946] [2021-05-02 12:33:42,879 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 12:33:42,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:42,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 12:33:42,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=428, Unknown=0, NotChecked=0, Total=650 [2021-05-02 12:33:42,879 INFO L87 Difference]: Start difference. First operand 100 states and 117 transitions. Second operand has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:43,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:43,508 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2021-05-02 12:33:43,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 12:33:43,509 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-05-02 12:33:43,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:43,512 INFO L225 Difference]: With dead ends: 118 [2021-05-02 12:33:43,512 INFO L226 Difference]: Without dead ends: 112 [2021-05-02 12:33:43,512 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 573.7ms TimeCoverageRelationStatistics Valid=614, Invalid=1456, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 12:33:43,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-05-02 12:33:43,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 105. [2021-05-02 12:33:43,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.19) internal successors, (119), 100 states have internal predecessors, (119), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:43,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2021-05-02 12:33:43,514 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 51 [2021-05-02 12:33:43,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:43,514 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2021-05-02 12:33:43,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.1538461538461537) internal successors, (56), 23 states have internal predecessors, (56), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:43,514 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2021-05-02 12:33:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-05-02 12:33:43,515 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:43,515 INFO L523 BasicCegarLoop]: trace histogram [19, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:43,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:33:43,725 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:43,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:43,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1453060383, now seen corresponding path program 18 times [2021-05-02 12:33:43,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:43,726 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845206684] [2021-05-02 12:33:43,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:43,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:43,941 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:43,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845206684] [2021-05-02 12:33:43,941 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845206684] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:43,941 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173551050] [2021-05-02 12:33:43,941 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 12:33:44,010 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-05-02 12:33:44,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:44,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 12:33:44,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:44,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:44,124 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:44,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173551050] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:44,124 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:44,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 27 [2021-05-02 12:33:44,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930772235] [2021-05-02 12:33:44,125 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-05-02 12:33:44,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:44,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-05-02 12:33:44,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=459, Unknown=0, NotChecked=0, Total=702 [2021-05-02 12:33:44,125 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 24 states have internal predecessors, (58), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:44,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:44,731 INFO L93 Difference]: Finished difference Result 123 states and 143 transitions. [2021-05-02 12:33:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 12:33:44,731 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 24 states have internal predecessors, (58), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-05-02 12:33:44,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:44,732 INFO L225 Difference]: With dead ends: 123 [2021-05-02 12:33:44,732 INFO L226 Difference]: Without dead ends: 117 [2021-05-02 12:33:44,732 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 630.0ms TimeCoverageRelationStatistics Valid=675, Invalid=1581, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 12:33:44,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2021-05-02 12:33:44,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 110. [2021-05-02 12:33:44,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 105 states have internal predecessors, (125), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:44,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 129 transitions. [2021-05-02 12:33:44,735 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 129 transitions. Word has length 53 [2021-05-02 12:33:44,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:44,735 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 129 transitions. [2021-05-02 12:33:44,735 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 2.1481481481481484) internal successors, (58), 24 states have internal predecessors, (58), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:44,735 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 129 transitions. [2021-05-02 12:33:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 12:33:44,736 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:44,736 INFO L523 BasicCegarLoop]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:44,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:33:44,936 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:44,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:44,937 INFO L82 PathProgramCache]: Analyzing trace with hash 168161050, now seen corresponding path program 19 times [2021-05-02 12:33:44,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:44,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453196653] [2021-05-02 12:33:44,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:45,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:45,156 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:45,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453196653] [2021-05-02 12:33:45,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453196653] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:45,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919945098] [2021-05-02 12:33:45,156 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 12:33:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:45,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 12:33:45,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:45,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:45,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919945098] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:45,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:45,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 28 [2021-05-02 12:33:45,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284985936] [2021-05-02 12:33:45,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 12:33:45,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:45,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 12:33:45,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=491, Unknown=0, NotChecked=0, Total=756 [2021-05-02 12:33:45,326 INFO L87 Difference]: Start difference. First operand 110 states and 129 transitions. Second operand has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 25 states have internal predecessors, (60), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:45,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:45,984 INFO L93 Difference]: Finished difference Result 128 states and 149 transitions. [2021-05-02 12:33:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 12:33:45,985 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 25 states have internal predecessors, (60), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2021-05-02 12:33:45,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:45,985 INFO L225 Difference]: With dead ends: 128 [2021-05-02 12:33:45,985 INFO L226 Difference]: Without dead ends: 122 [2021-05-02 12:33:45,986 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 656.8ms TimeCoverageRelationStatistics Valid=739, Invalid=1711, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 12:33:45,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-05-02 12:33:45,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 115. [2021-05-02 12:33:45,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.190909090909091) internal successors, (131), 110 states have internal predecessors, (131), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2021-05-02 12:33:45,988 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 55 [2021-05-02 12:33:45,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:45,988 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2021-05-02 12:33:45,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.142857142857143) internal successors, (60), 25 states have internal predecessors, (60), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2021-05-02 12:33:45,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-02 12:33:45,988 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:45,989 INFO L523 BasicCegarLoop]: trace histogram [21, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:46,193 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:33:46,193 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:46,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:46,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1964484011, now seen corresponding path program 20 times [2021-05-02 12:33:46,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:46,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285857300] [2021-05-02 12:33:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:46,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:46,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:46,410 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:46,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285857300] [2021-05-02 12:33:46,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285857300] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:46,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890369948] [2021-05-02 12:33:46,410 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 12:33:46,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:33:46,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:46,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 27 conjunts are in the unsatisfiable core [2021-05-02 12:33:46,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:46,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:46,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890369948] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:46,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:46,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 29 [2021-05-02 12:33:46,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630377210] [2021-05-02 12:33:46,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 12:33:46,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:46,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 12:33:46,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=524, Unknown=0, NotChecked=0, Total=812 [2021-05-02 12:33:46,595 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 26 states have internal predecessors, (62), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:47,300 INFO L93 Difference]: Finished difference Result 133 states and 155 transitions. [2021-05-02 12:33:47,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 12:33:47,302 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 26 states have internal predecessors, (62), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2021-05-02 12:33:47,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:47,303 INFO L225 Difference]: With dead ends: 133 [2021-05-02 12:33:47,303 INFO L226 Difference]: Without dead ends: 127 [2021-05-02 12:33:47,303 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 698.6ms TimeCoverageRelationStatistics Valid=806, Invalid=1846, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 12:33:47,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-05-02 12:33:47,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 120. [2021-05-02 12:33:47,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 115 states have (on average 1.191304347826087) internal successors, (137), 115 states have internal predecessors, (137), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:47,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2021-05-02 12:33:47,305 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 57 [2021-05-02 12:33:47,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:47,306 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2021-05-02 12:33:47,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.1379310344827585) internal successors, (62), 26 states have internal predecessors, (62), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:47,306 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2021-05-02 12:33:47,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-05-02 12:33:47,306 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:47,306 INFO L523 BasicCegarLoop]: trace histogram [22, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:47,520 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 12:33:47,521 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:47,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:47,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1557979856, now seen corresponding path program 21 times [2021-05-02 12:33:47,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:47,521 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926122207] [2021-05-02 12:33:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:47,795 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:47,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:47,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926122207] [2021-05-02 12:33:47,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926122207] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:47,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707138171] [2021-05-02 12:33:47,795 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 12:33:47,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s) [2021-05-02 12:33:47,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:47,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 28 conjunts are in the unsatisfiable core [2021-05-02 12:33:47,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:47,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:47,981 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:47,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707138171] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:47,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:47,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 30 [2021-05-02 12:33:47,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608132718] [2021-05-02 12:33:47,981 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-05-02 12:33:47,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:47,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-05-02 12:33:47,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=558, Unknown=0, NotChecked=0, Total=870 [2021-05-02 12:33:47,982 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 27 states have internal predecessors, (64), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:48,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:48,743 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2021-05-02 12:33:48,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 12:33:48,743 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 27 states have internal predecessors, (64), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2021-05-02 12:33:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:48,744 INFO L225 Difference]: With dead ends: 138 [2021-05-02 12:33:48,744 INFO L226 Difference]: Without dead ends: 132 [2021-05-02 12:33:48,745 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 789.2ms TimeCoverageRelationStatistics Valid=876, Invalid=1986, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 12:33:48,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-05-02 12:33:48,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 125. [2021-05-02 12:33:48,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.1916666666666667) internal successors, (143), 120 states have internal predecessors, (143), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:48,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 147 transitions. [2021-05-02 12:33:48,748 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 147 transitions. Word has length 59 [2021-05-02 12:33:48,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:48,748 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 147 transitions. [2021-05-02 12:33:48,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 2.1333333333333333) internal successors, (64), 27 states have internal predecessors, (64), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:48,748 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 147 transitions. [2021-05-02 12:33:48,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-05-02 12:33:48,748 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:48,749 INFO L523 BasicCegarLoop]: trace histogram [23, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:48,956 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-05-02 12:33:48,957 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:48,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:48,957 INFO L82 PathProgramCache]: Analyzing trace with hash -2083440501, now seen corresponding path program 22 times [2021-05-02 12:33:48,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:48,957 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070220223] [2021-05-02 12:33:48,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:49,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:49,208 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:49,208 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:49,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070220223] [2021-05-02 12:33:49,208 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070220223] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:49,208 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560536745] [2021-05-02 12:33:49,208 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 12:33:49,258 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:33:49,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:49,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 12:33:49,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:49,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:49,385 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:49,386 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560536745] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:49,386 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:49,386 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 31 [2021-05-02 12:33:49,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707655552] [2021-05-02 12:33:49,386 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-02 12:33:49,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:49,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-02 12:33:49,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=337, Invalid=593, Unknown=0, NotChecked=0, Total=930 [2021-05-02 12:33:49,387 INFO L87 Difference]: Start difference. First operand 125 states and 147 transitions. Second operand has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 28 states have internal predecessors, (66), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:50,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:50,160 INFO L93 Difference]: Finished difference Result 143 states and 167 transitions. [2021-05-02 12:33:50,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-02 12:33:50,161 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 28 states have internal predecessors, (66), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-05-02 12:33:50,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:50,161 INFO L225 Difference]: With dead ends: 143 [2021-05-02 12:33:50,161 INFO L226 Difference]: Without dead ends: 137 [2021-05-02 12:33:50,162 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 526 ImplicationChecksByTransitivity, 763.6ms TimeCoverageRelationStatistics Valid=949, Invalid=2131, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 12:33:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-05-02 12:33:50,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 130. [2021-05-02 12:33:50,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.192) internal successors, (149), 125 states have internal predecessors, (149), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:50,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 153 transitions. [2021-05-02 12:33:50,164 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 153 transitions. Word has length 61 [2021-05-02 12:33:50,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:50,165 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 153 transitions. [2021-05-02 12:33:50,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 2.129032258064516) internal successors, (66), 28 states have internal predecessors, (66), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:50,165 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 153 transitions. [2021-05-02 12:33:50,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-05-02 12:33:50,165 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:50,165 INFO L523 BasicCegarLoop]: trace histogram [24, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:50,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:33:50,381 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:50,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:50,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1090057338, now seen corresponding path program 23 times [2021-05-02 12:33:50,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:50,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174926993] [2021-05-02 12:33:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:50,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:50,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:50,653 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:50,653 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:50,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174926993] [2021-05-02 12:33:50,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174926993] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:50,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144809790] [2021-05-02 12:33:50,653 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 12:33:50,711 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-05-02 12:33:50,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:50,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 30 conjunts are in the unsatisfiable core [2021-05-02 12:33:50,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:50,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:50,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144809790] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:50,837 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:50,837 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 32 [2021-05-02 12:33:50,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022833302] [2021-05-02 12:33:50,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-02 12:33:50,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:50,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-02 12:33:50,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=629, Unknown=0, NotChecked=0, Total=992 [2021-05-02 12:33:50,838 INFO L87 Difference]: Start difference. First operand 130 states and 153 transitions. Second operand has 32 states, 32 states have (on average 2.125) internal successors, (68), 29 states have internal predecessors, (68), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:51,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:51,708 INFO L93 Difference]: Finished difference Result 148 states and 173 transitions. [2021-05-02 12:33:51,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 12:33:51,708 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 29 states have internal predecessors, (68), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 63 [2021-05-02 12:33:51,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:51,709 INFO L225 Difference]: With dead ends: 148 [2021-05-02 12:33:51,709 INFO L226 Difference]: Without dead ends: 142 [2021-05-02 12:33:51,710 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 875.2ms TimeCoverageRelationStatistics Valid=1025, Invalid=2281, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 12:33:51,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-05-02 12:33:51,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 135. [2021-05-02 12:33:51,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 130 states have (on average 1.1923076923076923) internal successors, (155), 130 states have internal predecessors, (155), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 159 transitions. [2021-05-02 12:33:51,712 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 159 transitions. Word has length 63 [2021-05-02 12:33:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:51,712 INFO L480 AbstractCegarLoop]: Abstraction has 135 states and 159 transitions. [2021-05-02 12:33:51,712 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 2.125) internal successors, (68), 29 states have internal predecessors, (68), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 159 transitions. [2021-05-02 12:33:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-05-02 12:33:51,713 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:51,713 INFO L523 BasicCegarLoop]: trace histogram [25, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:51,920 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-05-02 12:33:51,921 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:51,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:51,921 INFO L82 PathProgramCache]: Analyzing trace with hash 68422593, now seen corresponding path program 24 times [2021-05-02 12:33:51,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:51,921 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643373614] [2021-05-02 12:33:51,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:51,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:52,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:52,223 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:52,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643373614] [2021-05-02 12:33:52,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643373614] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:52,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425111556] [2021-05-02 12:33:52,223 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 12:33:52,292 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s) [2021-05-02 12:33:52,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:52,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 12:33:52,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:52,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:52,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425111556] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:52,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:52,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 33 [2021-05-02 12:33:52,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133520861] [2021-05-02 12:33:52,424 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-05-02 12:33:52,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:52,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-05-02 12:33:52,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=666, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 12:33:52,426 INFO L87 Difference]: Start difference. First operand 135 states and 159 transitions. Second operand has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 30 states have internal predecessors, (70), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:53,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:53,286 INFO L93 Difference]: Finished difference Result 153 states and 179 transitions. [2021-05-02 12:33:53,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 12:33:53,286 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 30 states have internal predecessors, (70), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-05-02 12:33:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:53,287 INFO L225 Difference]: With dead ends: 153 [2021-05-02 12:33:53,287 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 12:33:53,288 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 904.5ms TimeCoverageRelationStatistics Valid=1104, Invalid=2436, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 12:33:53,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 12:33:53,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 140. [2021-05-02 12:33:53,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.1925925925925926) internal successors, (161), 135 states have internal predecessors, (161), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:53,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2021-05-02 12:33:53,290 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 65 [2021-05-02 12:33:53,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:53,291 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2021-05-02 12:33:53,291 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 2.121212121212121) internal successors, (70), 30 states have internal predecessors, (70), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:53,291 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2021-05-02 12:33:53,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 12:33:53,291 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:53,291 INFO L523 BasicCegarLoop]: trace histogram [26, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:53,500 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:33:53,501 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:53,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:53,501 INFO L82 PathProgramCache]: Analyzing trace with hash 971106620, now seen corresponding path program 25 times [2021-05-02 12:33:53,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:53,501 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070962195] [2021-05-02 12:33:53,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:53,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:53,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:53,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:53,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070962195] [2021-05-02 12:33:53,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070962195] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:53,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958375257] [2021-05-02 12:33:53,818 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 12:33:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:53,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 12:33:53,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:53,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:53,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:54,010 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:54,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958375257] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:54,010 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:54,010 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 34 [2021-05-02 12:33:54,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935233954] [2021-05-02 12:33:54,010 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2021-05-02 12:33:54,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:54,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-05-02 12:33:54,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=704, Unknown=0, NotChecked=0, Total=1122 [2021-05-02 12:33:54,011 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 31 states have internal predecessors, (72), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:54,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:54,902 INFO L93 Difference]: Finished difference Result 158 states and 185 transitions. [2021-05-02 12:33:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 12:33:54,903 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 31 states have internal predecessors, (72), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2021-05-02 12:33:54,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:54,903 INFO L225 Difference]: With dead ends: 158 [2021-05-02 12:33:54,903 INFO L226 Difference]: Without dead ends: 152 [2021-05-02 12:33:54,904 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 932.1ms TimeCoverageRelationStatistics Valid=1186, Invalid=2596, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 12:33:54,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-05-02 12:33:54,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 145. [2021-05-02 12:33:54,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 140 states have internal predecessors, (167), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:54,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2021-05-02 12:33:54,907 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 67 [2021-05-02 12:33:54,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:54,907 INFO L480 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2021-05-02 12:33:54,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 34 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 31 states have internal predecessors, (72), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:54,907 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2021-05-02 12:33:54,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 12:33:54,907 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:54,907 INFO L523 BasicCegarLoop]: trace histogram [27, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:55,112 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 12:33:55,113 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:55,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:55,113 INFO L82 PathProgramCache]: Analyzing trace with hash 867062775, now seen corresponding path program 26 times [2021-05-02 12:33:55,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:55,113 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505875511] [2021-05-02 12:33:55,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:55,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:55,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:55,446 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:55,446 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:55,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505875511] [2021-05-02 12:33:55,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505875511] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:55,446 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468887907] [2021-05-02 12:33:55,446 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 12:33:55,499 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:33:55,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:55,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 33 conjunts are in the unsatisfiable core [2021-05-02 12:33:55,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:55,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:55,647 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:55,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468887907] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:55,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:55,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 35 [2021-05-02 12:33:55,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219289235] [2021-05-02 12:33:55,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-05-02 12:33:55,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:55,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-05-02 12:33:55,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=743, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 12:33:55,649 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 32 states have internal predecessors, (74), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:56,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:56,650 INFO L93 Difference]: Finished difference Result 163 states and 191 transitions. [2021-05-02 12:33:56,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-05-02 12:33:56,650 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 32 states have internal predecessors, (74), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-05-02 12:33:56,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:56,651 INFO L225 Difference]: With dead ends: 163 [2021-05-02 12:33:56,651 INFO L226 Difference]: Without dead ends: 157 [2021-05-02 12:33:56,652 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 672 ImplicationChecksByTransitivity, 1033.9ms TimeCoverageRelationStatistics Valid=1271, Invalid=2761, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 12:33:56,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-05-02 12:33:56,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 150. [2021-05-02 12:33:56,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 145 states have (on average 1.193103448275862) internal successors, (173), 145 states have internal predecessors, (173), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:56,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 177 transitions. [2021-05-02 12:33:56,655 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 177 transitions. Word has length 69 [2021-05-02 12:33:56,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:56,655 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 177 transitions. [2021-05-02 12:33:56,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 2.1142857142857143) internal successors, (74), 32 states have internal predecessors, (74), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:56,655 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 177 transitions. [2021-05-02 12:33:56,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-05-02 12:33:56,655 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:56,655 INFO L523 BasicCegarLoop]: trace histogram [28, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:56,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 12:33:56,861 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:56,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:56,861 INFO L82 PathProgramCache]: Analyzing trace with hash -334824462, now seen corresponding path program 27 times [2021-05-02 12:33:56,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:56,861 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876352555] [2021-05-02 12:33:56,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:57,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:57,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:57,217 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:57,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:57,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876352555] [2021-05-02 12:33:57,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876352555] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:57,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736349758] [2021-05-02 12:33:57,217 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 12:33:57,283 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s) [2021-05-02 12:33:57,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:57,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 34 conjunts are in the unsatisfiable core [2021-05-02 12:33:57,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:57,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:57,432 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:57,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736349758] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:57,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:57,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 36 [2021-05-02 12:33:57,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141436548] [2021-05-02 12:33:57,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-05-02 12:33:57,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:57,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-05-02 12:33:57,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=477, Invalid=783, Unknown=0, NotChecked=0, Total=1260 [2021-05-02 12:33:57,434 INFO L87 Difference]: Start difference. First operand 150 states and 177 transitions. Second operand has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 33 states have internal predecessors, (76), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:33:58,511 INFO L93 Difference]: Finished difference Result 168 states and 197 transitions. [2021-05-02 12:33:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 12:33:58,511 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 33 states have internal predecessors, (76), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-05-02 12:33:58,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:33:58,512 INFO L225 Difference]: With dead ends: 168 [2021-05-02 12:33:58,512 INFO L226 Difference]: Without dead ends: 162 [2021-05-02 12:33:58,513 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 711 ImplicationChecksByTransitivity, 1097.5ms TimeCoverageRelationStatistics Valid=1359, Invalid=2931, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 12:33:58,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-05-02 12:33:58,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 155. [2021-05-02 12:33:58,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 150 states have (on average 1.1933333333333334) internal successors, (179), 150 states have internal predecessors, (179), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 183 transitions. [2021-05-02 12:33:58,515 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 183 transitions. Word has length 71 [2021-05-02 12:33:58,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:33:58,516 INFO L480 AbstractCegarLoop]: Abstraction has 155 states and 183 transitions. [2021-05-02 12:33:58,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 2.111111111111111) internal successors, (76), 33 states have internal predecessors, (76), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:33:58,516 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 183 transitions. [2021-05-02 12:33:58,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-05-02 12:33:58,516 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:33:58,516 INFO L523 BasicCegarLoop]: trace histogram [29, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:33:58,725 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 12:33:58,725 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:33:58,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:33:58,725 INFO L82 PathProgramCache]: Analyzing trace with hash -2256595, now seen corresponding path program 28 times [2021-05-02 12:33:58,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:33:58,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29323329] [2021-05-02 12:33:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:33:58,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:59,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:33:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:33:59,109 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:59,109 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:33:59,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29323329] [2021-05-02 12:33:59,109 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29323329] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:59,109 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507732993] [2021-05-02 12:33:59,110 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 12:33:59,168 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:33:59,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:33:59,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 12:33:59,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:33:59,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:33:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:33:59,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507732993] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:33:59,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:33:59,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 37 [2021-05-02 12:33:59,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619552115] [2021-05-02 12:33:59,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-05-02 12:33:59,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:33:59,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-05-02 12:33:59,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=508, Invalid=824, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 12:33:59,319 INFO L87 Difference]: Start difference. First operand 155 states and 183 transitions. Second operand has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 34 states have internal predecessors, (78), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:00,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:00,403 INFO L93 Difference]: Finished difference Result 173 states and 203 transitions. [2021-05-02 12:34:00,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-05-02 12:34:00,403 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 34 states have internal predecessors, (78), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 73 [2021-05-02 12:34:00,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:00,404 INFO L225 Difference]: With dead ends: 173 [2021-05-02 12:34:00,404 INFO L226 Difference]: Without dead ends: 167 [2021-05-02 12:34:00,405 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1124.1ms TimeCoverageRelationStatistics Valid=1450, Invalid=3106, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 12:34:00,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-05-02 12:34:00,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 160. [2021-05-02 12:34:00,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 155 states have (on average 1.1935483870967742) internal successors, (185), 155 states have internal predecessors, (185), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:00,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 189 transitions. [2021-05-02 12:34:00,407 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 189 transitions. Word has length 73 [2021-05-02 12:34:00,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:00,407 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 189 transitions. [2021-05-02 12:34:00,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 2.108108108108108) internal successors, (78), 34 states have internal predecessors, (78), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:00,407 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 189 transitions. [2021-05-02 12:34:00,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 12:34:00,408 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:00,408 INFO L523 BasicCegarLoop]: trace histogram [30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:00,608 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:34:00,608 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:00,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:00,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1767883688, now seen corresponding path program 29 times [2021-05-02 12:34:00,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:00,609 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598943791] [2021-05-02 12:34:00,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:01,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:01,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:01,016 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:01,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598943791] [2021-05-02 12:34:01,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598943791] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:01,016 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594841867] [2021-05-02 12:34:01,016 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 12:34:01,098 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s) [2021-05-02 12:34:01,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:01,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 36 conjunts are in the unsatisfiable core [2021-05-02 12:34:01,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:01,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:01,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594841867] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:01,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:01,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 38 [2021-05-02 12:34:01,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330803068] [2021-05-02 12:34:01,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 12:34:01,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:01,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 12:34:01,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=866, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 12:34:01,254 INFO L87 Difference]: Start difference. First operand 160 states and 189 transitions. Second operand has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 35 states have internal predecessors, (80), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:02,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:02,357 INFO L93 Difference]: Finished difference Result 178 states and 209 transitions. [2021-05-02 12:34:02,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-05-02 12:34:02,358 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 35 states have internal predecessors, (80), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2021-05-02 12:34:02,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:02,358 INFO L225 Difference]: With dead ends: 178 [2021-05-02 12:34:02,358 INFO L226 Difference]: Without dead ends: 172 [2021-05-02 12:34:02,359 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 792 ImplicationChecksByTransitivity, 1203.7ms TimeCoverageRelationStatistics Valid=1544, Invalid=3286, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 12:34:02,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-05-02 12:34:02,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 165. [2021-05-02 12:34:02,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 160 states have (on average 1.19375) internal successors, (191), 160 states have internal predecessors, (191), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:02,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 195 transitions. [2021-05-02 12:34:02,362 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 195 transitions. Word has length 75 [2021-05-02 12:34:02,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:02,362 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 195 transitions. [2021-05-02 12:34:02,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.1052631578947367) internal successors, (80), 35 states have internal predecessors, (80), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:02,362 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 195 transitions. [2021-05-02 12:34:02,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-05-02 12:34:02,362 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:02,363 INFO L523 BasicCegarLoop]: trace histogram [31, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:02,571 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-05-02 12:34:02,571 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:02,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:02,571 INFO L82 PathProgramCache]: Analyzing trace with hash 2065646435, now seen corresponding path program 30 times [2021-05-02 12:34:02,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:02,571 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698419644] [2021-05-02 12:34:02,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:03,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:03,024 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:03,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:03,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698419644] [2021-05-02 12:34:03,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698419644] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:03,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722621487] [2021-05-02 12:34:03,024 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 12:34:03,102 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s) [2021-05-02 12:34:03,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:03,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 37 conjunts are in the unsatisfiable core [2021-05-02 12:34:03,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:03,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:03,256 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722621487] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:03,256 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:03,256 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 39 [2021-05-02 12:34:03,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526801206] [2021-05-02 12:34:03,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-05-02 12:34:03,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:03,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-05-02 12:34:03,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=573, Invalid=909, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 12:34:03,257 INFO L87 Difference]: Start difference. First operand 165 states and 195 transitions. Second operand has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 36 states have internal predecessors, (82), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:04,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:04,419 INFO L93 Difference]: Finished difference Result 183 states and 215 transitions. [2021-05-02 12:34:04,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-05-02 12:34:04,419 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 36 states have internal predecessors, (82), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2021-05-02 12:34:04,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:04,420 INFO L225 Difference]: With dead ends: 183 [2021-05-02 12:34:04,420 INFO L226 Difference]: Without dead ends: 177 [2021-05-02 12:34:04,420 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 1292.3ms TimeCoverageRelationStatistics Valid=1641, Invalid=3471, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 12:34:04,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-05-02 12:34:04,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 170. [2021-05-02 12:34:04,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 165 states have (on average 1.1939393939393939) internal successors, (197), 165 states have internal predecessors, (197), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:04,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 201 transitions. [2021-05-02 12:34:04,423 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 201 transitions. Word has length 77 [2021-05-02 12:34:04,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:04,423 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 201 transitions. [2021-05-02 12:34:04,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 2.1025641025641026) internal successors, (82), 36 states have internal predecessors, (82), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:04,423 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 201 transitions. [2021-05-02 12:34:04,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-05-02 12:34:04,423 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:04,423 INFO L523 BasicCegarLoop]: trace histogram [32, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:04,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:34:04,638 INFO L428 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:04,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:04,639 INFO L82 PathProgramCache]: Analyzing trace with hash 452837470, now seen corresponding path program 31 times [2021-05-02 12:34:04,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:04,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787185569] [2021-05-02 12:34:04,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:05,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:05,097 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:05,097 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:05,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787185569] [2021-05-02 12:34:05,097 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787185569] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:05,097 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048709779] [2021-05-02 12:34:05,097 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 12:34:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:05,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 12:34:05,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:05,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:05,316 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048709779] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:05,316 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:05,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36] total 40 [2021-05-02 12:34:05,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730221379] [2021-05-02 12:34:05,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-05-02 12:34:05,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:05,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-05-02 12:34:05,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=607, Invalid=953, Unknown=0, NotChecked=0, Total=1560 [2021-05-02 12:34:05,318 INFO L87 Difference]: Start difference. First operand 170 states and 201 transitions. Second operand has 40 states, 40 states have (on average 2.1) internal successors, (84), 37 states have internal predecessors, (84), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:06,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:06,491 INFO L93 Difference]: Finished difference Result 188 states and 221 transitions. [2021-05-02 12:34:06,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-05-02 12:34:06,491 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 2.1) internal successors, (84), 37 states have internal predecessors, (84), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2021-05-02 12:34:06,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:06,492 INFO L225 Difference]: With dead ends: 188 [2021-05-02 12:34:06,492 INFO L226 Difference]: Without dead ends: 182 [2021-05-02 12:34:06,492 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 877 ImplicationChecksByTransitivity, 1285.2ms TimeCoverageRelationStatistics Valid=1741, Invalid=3661, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 12:34:06,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-05-02 12:34:06,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 175. [2021-05-02 12:34:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 170 states have (on average 1.1941176470588235) internal successors, (203), 170 states have internal predecessors, (203), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 207 transitions. [2021-05-02 12:34:06,495 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 207 transitions. Word has length 79 [2021-05-02 12:34:06,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:06,495 INFO L480 AbstractCegarLoop]: Abstraction has 175 states and 207 transitions. [2021-05-02 12:34:06,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 2.1) internal successors, (84), 37 states have internal predecessors, (84), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:06,495 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 207 transitions. [2021-05-02 12:34:06,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-05-02 12:34:06,495 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:06,495 INFO L523 BasicCegarLoop]: trace histogram [33, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:06,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-05-02 12:34:06,713 INFO L428 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:06,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:06,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1026615961, now seen corresponding path program 32 times [2021-05-02 12:34:06,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:06,713 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545840693] [2021-05-02 12:34:06,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:06,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:07,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:07,190 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:07,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545840693] [2021-05-02 12:34:07,190 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545840693] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:07,190 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984808687] [2021-05-02 12:34:07,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:34:07,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:34:07,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:07,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 12:34:07,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:07,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:07,401 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984808687] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:07,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:07,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 41 [2021-05-02 12:34:07,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565630762] [2021-05-02 12:34:07,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 12:34:07,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:07,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 12:34:07,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=998, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 12:34:07,402 INFO L87 Difference]: Start difference. First operand 175 states and 207 transitions. Second operand has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 38 states have internal predecessors, (86), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:08,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:08,627 INFO L93 Difference]: Finished difference Result 193 states and 227 transitions. [2021-05-02 12:34:08,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-05-02 12:34:08,627 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 38 states have internal predecessors, (86), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2021-05-02 12:34:08,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:08,628 INFO L225 Difference]: With dead ends: 193 [2021-05-02 12:34:08,628 INFO L226 Difference]: Without dead ends: 187 [2021-05-02 12:34:08,628 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 921 ImplicationChecksByTransitivity, 1370.9ms TimeCoverageRelationStatistics Valid=1844, Invalid=3856, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 12:34:08,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-05-02 12:34:08,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 180. [2021-05-02 12:34:08,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 175 states have (on average 1.1942857142857144) internal successors, (209), 175 states have internal predecessors, (209), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:08,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 213 transitions. [2021-05-02 12:34:08,631 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 213 transitions. Word has length 81 [2021-05-02 12:34:08,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:08,631 INFO L480 AbstractCegarLoop]: Abstraction has 180 states and 213 transitions. [2021-05-02 12:34:08,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.097560975609756) internal successors, (86), 38 states have internal predecessors, (86), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:08,631 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 213 transitions. [2021-05-02 12:34:08,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-05-02 12:34:08,632 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:08,632 INFO L523 BasicCegarLoop]: trace histogram [34, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:08,846 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-05-02 12:34:08,846 INFO L428 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:08,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:08,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1623035372, now seen corresponding path program 33 times [2021-05-02 12:34:08,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:08,847 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566594114] [2021-05-02 12:34:08,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:09,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:09,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:09,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:09,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:09,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566594114] [2021-05-02 12:34:09,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566594114] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:09,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454190937] [2021-05-02 12:34:09,357 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 12:34:09,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s) [2021-05-02 12:34:09,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:09,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 40 conjunts are in the unsatisfiable core [2021-05-02 12:34:09,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:09,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:09,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:09,632 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454190937] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:09,632 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:09,632 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 42 [2021-05-02 12:34:09,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075493175] [2021-05-02 12:34:09,632 INFO L460 AbstractCegarLoop]: Interpolant automaton has 42 states [2021-05-02 12:34:09,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:09,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-05-02 12:34:09,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=678, Invalid=1044, Unknown=0, NotChecked=0, Total=1722 [2021-05-02 12:34:09,633 INFO L87 Difference]: Start difference. First operand 180 states and 213 transitions. Second operand has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 39 states have internal predecessors, (88), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:10,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:10,963 INFO L93 Difference]: Finished difference Result 198 states and 233 transitions. [2021-05-02 12:34:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-05-02 12:34:10,963 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 39 states have internal predecessors, (88), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2021-05-02 12:34:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:10,964 INFO L225 Difference]: With dead ends: 198 [2021-05-02 12:34:10,964 INFO L226 Difference]: Without dead ends: 192 [2021-05-02 12:34:10,965 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 966 ImplicationChecksByTransitivity, 1449.6ms TimeCoverageRelationStatistics Valid=1950, Invalid=4056, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 12:34:10,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-05-02 12:34:10,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 185. [2021-05-02 12:34:10,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 180 states have (on average 1.1944444444444444) internal successors, (215), 180 states have internal predecessors, (215), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:10,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 219 transitions. [2021-05-02 12:34:10,967 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 219 transitions. Word has length 83 [2021-05-02 12:34:10,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:10,967 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 219 transitions. [2021-05-02 12:34:10,967 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 42 states, 42 states have (on average 2.0952380952380953) internal successors, (88), 39 states have internal predecessors, (88), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:10,967 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 219 transitions. [2021-05-02 12:34:10,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 12:34:10,968 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:10,968 INFO L523 BasicCegarLoop]: trace histogram [35, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:11,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-05-02 12:34:11,183 INFO L428 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:11,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:11,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1022359857, now seen corresponding path program 34 times [2021-05-02 12:34:11,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:11,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629171652] [2021-05-02 12:34:11,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:11,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:11,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:11,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:11,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:11,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629171652] [2021-05-02 12:34:11,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629171652] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:11,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850211446] [2021-05-02 12:34:11,689 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 12:34:11,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:34:11,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:11,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 38 conjunts are in the unsatisfiable core [2021-05-02 12:34:11,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:11,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:11,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:11,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850211446] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:11,935 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:11,935 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 43 [2021-05-02 12:34:11,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680116393] [2021-05-02 12:34:11,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-05-02 12:34:11,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:11,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-05-02 12:34:11,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=715, Invalid=1091, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 12:34:11,936 INFO L87 Difference]: Start difference. First operand 185 states and 219 transitions. Second operand has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 40 states have internal predecessors, (90), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:13,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:13,274 INFO L93 Difference]: Finished difference Result 203 states and 239 transitions. [2021-05-02 12:34:13,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-02 12:34:13,274 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 40 states have internal predecessors, (90), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2021-05-02 12:34:13,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:13,275 INFO L225 Difference]: With dead ends: 203 [2021-05-02 12:34:13,275 INFO L226 Difference]: Without dead ends: 197 [2021-05-02 12:34:13,275 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1012 ImplicationChecksByTransitivity, 1469.6ms TimeCoverageRelationStatistics Valid=2059, Invalid=4261, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 12:34:13,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-05-02 12:34:13,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 190. [2021-05-02 12:34:13,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 185 states have (on average 1.1945945945945946) internal successors, (221), 185 states have internal predecessors, (221), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 225 transitions. [2021-05-02 12:34:13,278 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 225 transitions. Word has length 85 [2021-05-02 12:34:13,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:13,278 INFO L480 AbstractCegarLoop]: Abstraction has 190 states and 225 transitions. [2021-05-02 12:34:13,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 2.0930232558139537) internal successors, (90), 40 states have internal predecessors, (90), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:13,278 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 225 transitions. [2021-05-02 12:34:13,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-05-02 12:34:13,279 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:13,279 INFO L523 BasicCegarLoop]: trace histogram [36, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:13,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-05-02 12:34:13,479 INFO L428 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:13,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:13,479 INFO L82 PathProgramCache]: Analyzing trace with hash 701192394, now seen corresponding path program 35 times [2021-05-02 12:34:13,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:13,480 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102849035] [2021-05-02 12:34:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:14,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:14,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:14,033 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:14,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102849035] [2021-05-02 12:34:14,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102849035] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:14,033 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095540892] [2021-05-02 12:34:14,033 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 12:34:14,104 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s) [2021-05-02 12:34:14,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:14,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 42 conjunts are in the unsatisfiable core [2021-05-02 12:34:14,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:14,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:14,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095540892] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:14,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:14,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 44 [2021-05-02 12:34:14,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011724383] [2021-05-02 12:34:14,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-05-02 12:34:14,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:14,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-05-02 12:34:14,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=753, Invalid=1139, Unknown=0, NotChecked=0, Total=1892 [2021-05-02 12:34:14,313 INFO L87 Difference]: Start difference. First operand 190 states and 225 transitions. Second operand has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 41 states have internal predecessors, (92), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:15,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:15,680 INFO L93 Difference]: Finished difference Result 208 states and 245 transitions. [2021-05-02 12:34:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-02 12:34:15,680 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 41 states have internal predecessors, (92), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 87 [2021-05-02 12:34:15,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:15,681 INFO L225 Difference]: With dead ends: 208 [2021-05-02 12:34:15,681 INFO L226 Difference]: Without dead ends: 202 [2021-05-02 12:34:15,682 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1059 ImplicationChecksByTransitivity, 1549.7ms TimeCoverageRelationStatistics Valid=2171, Invalid=4471, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 12:34:15,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-05-02 12:34:15,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 195. [2021-05-02 12:34:15,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 190 states have (on average 1.194736842105263) internal successors, (227), 190 states have internal predecessors, (227), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:15,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 231 transitions. [2021-05-02 12:34:15,684 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 231 transitions. Word has length 87 [2021-05-02 12:34:15,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:15,684 INFO L480 AbstractCegarLoop]: Abstraction has 195 states and 231 transitions. [2021-05-02 12:34:15,684 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 2.090909090909091) internal successors, (92), 41 states have internal predecessors, (92), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:15,684 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 231 transitions. [2021-05-02 12:34:15,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 12:34:15,685 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:15,685 INFO L523 BasicCegarLoop]: trace histogram [37, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:15,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-05-02 12:34:15,900 INFO L428 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:15,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:15,901 INFO L82 PathProgramCache]: Analyzing trace with hash -822470651, now seen corresponding path program 36 times [2021-05-02 12:34:15,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:15,901 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911927728] [2021-05-02 12:34:15,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:15,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:16,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:16,469 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:16,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911927728] [2021-05-02 12:34:16,469 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911927728] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:16,469 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512664366] [2021-05-02 12:34:16,469 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 12:34:16,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s) [2021-05-02 12:34:16,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:16,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 43 conjunts are in the unsatisfiable core [2021-05-02 12:34:16,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:16,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:16,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:16,728 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512664366] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:16,729 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:16,729 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 45 [2021-05-02 12:34:16,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174972365] [2021-05-02 12:34:16,729 INFO L460 AbstractCegarLoop]: Interpolant automaton has 45 states [2021-05-02 12:34:16,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:16,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-05-02 12:34:16,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=792, Invalid=1188, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 12:34:16,730 INFO L87 Difference]: Start difference. First operand 195 states and 231 transitions. Second operand has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 42 states have internal predecessors, (94), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:18,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:18,165 INFO L93 Difference]: Finished difference Result 213 states and 251 transitions. [2021-05-02 12:34:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-05-02 12:34:18,166 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 42 states have internal predecessors, (94), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 89 [2021-05-02 12:34:18,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:18,166 INFO L225 Difference]: With dead ends: 213 [2021-05-02 12:34:18,167 INFO L226 Difference]: Without dead ends: 207 [2021-05-02 12:34:18,167 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1107 ImplicationChecksByTransitivity, 1634.3ms TimeCoverageRelationStatistics Valid=2286, Invalid=4686, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 12:34:18,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-02 12:34:18,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 200. [2021-05-02 12:34:18,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 195 states have (on average 1.1948717948717948) internal successors, (233), 195 states have internal predecessors, (233), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:18,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 237 transitions. [2021-05-02 12:34:18,169 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 237 transitions. Word has length 89 [2021-05-02 12:34:18,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:18,170 INFO L480 AbstractCegarLoop]: Abstraction has 200 states and 237 transitions. [2021-05-02 12:34:18,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 45 states, 45 states have (on average 2.088888888888889) internal successors, (94), 42 states have internal predecessors, (94), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:18,170 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 237 transitions. [2021-05-02 12:34:18,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 12:34:18,170 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:18,170 INFO L523 BasicCegarLoop]: trace histogram [38, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:18,384 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-05-02 12:34:18,385 INFO L428 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:18,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:18,385 INFO L82 PathProgramCache]: Analyzing trace with hash -478808960, now seen corresponding path program 37 times [2021-05-02 12:34:18,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:18,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745597824] [2021-05-02 12:34:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:18,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:18,976 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:18,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745597824] [2021-05-02 12:34:18,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745597824] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:18,976 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762092835] [2021-05-02 12:34:18,976 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 12:34:19,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:19,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 12:34:19,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:19,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:19,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:19,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762092835] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:19,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:19,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42] total 46 [2021-05-02 12:34:19,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499938135] [2021-05-02 12:34:19,218 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-05-02 12:34:19,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:19,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-05-02 12:34:19,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=832, Invalid=1238, Unknown=0, NotChecked=0, Total=2070 [2021-05-02 12:34:19,219 INFO L87 Difference]: Start difference. First operand 200 states and 237 transitions. Second operand has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 43 states have internal predecessors, (96), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:20,663 INFO L93 Difference]: Finished difference Result 218 states and 257 transitions. [2021-05-02 12:34:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-05-02 12:34:20,664 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 43 states have internal predecessors, (96), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 91 [2021-05-02 12:34:20,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:20,664 INFO L225 Difference]: With dead ends: 218 [2021-05-02 12:34:20,664 INFO L226 Difference]: Without dead ends: 212 [2021-05-02 12:34:20,665 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1156 ImplicationChecksByTransitivity, 1692.5ms TimeCoverageRelationStatistics Valid=2404, Invalid=4906, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 12:34:20,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-05-02 12:34:20,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 205. [2021-05-02 12:34:20,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 200 states have (on average 1.195) internal successors, (239), 200 states have internal predecessors, (239), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:20,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 243 transitions. [2021-05-02 12:34:20,667 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 243 transitions. Word has length 91 [2021-05-02 12:34:20,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:20,668 INFO L480 AbstractCegarLoop]: Abstraction has 205 states and 243 transitions. [2021-05-02 12:34:20,668 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 2.0869565217391304) internal successors, (96), 43 states have internal predecessors, (96), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:20,668 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 243 transitions. [2021-05-02 12:34:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-05-02 12:34:20,668 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:20,668 INFO L523 BasicCegarLoop]: trace histogram [39, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:20,876 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-02 12:34:20,877 INFO L428 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:20,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:20,877 INFO L82 PathProgramCache]: Analyzing trace with hash -932405701, now seen corresponding path program 38 times [2021-05-02 12:34:20,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:20,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175750772] [2021-05-02 12:34:20,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:21,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:21,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:21,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175750772] [2021-05-02 12:34:21,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175750772] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:21,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879551621] [2021-05-02 12:34:21,534 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 12:34:21,599 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:34:21,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:21,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 12:34:21,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:21,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:21,784 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:21,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879551621] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:21,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:21,785 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43] total 47 [2021-05-02 12:34:21,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374155032] [2021-05-02 12:34:21,785 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-05-02 12:34:21,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:21,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-05-02 12:34:21,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=873, Invalid=1289, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 12:34:21,786 INFO L87 Difference]: Start difference. First operand 205 states and 243 transitions. Second operand has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 44 states have internal predecessors, (98), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:23,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:23,364 INFO L93 Difference]: Finished difference Result 223 states and 263 transitions. [2021-05-02 12:34:23,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-05-02 12:34:23,364 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 44 states have internal predecessors, (98), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 93 [2021-05-02 12:34:23,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:23,365 INFO L225 Difference]: With dead ends: 223 [2021-05-02 12:34:23,365 INFO L226 Difference]: Without dead ends: 217 [2021-05-02 12:34:23,365 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 1854.5ms TimeCoverageRelationStatistics Valid=2525, Invalid=5131, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 12:34:23,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-05-02 12:34:23,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 210. [2021-05-02 12:34:23,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 1.1951219512195121) internal successors, (245), 205 states have internal predecessors, (245), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:23,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 249 transitions. [2021-05-02 12:34:23,368 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 249 transitions. Word has length 93 [2021-05-02 12:34:23,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:23,368 INFO L480 AbstractCegarLoop]: Abstraction has 210 states and 249 transitions. [2021-05-02 12:34:23,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 2.0851063829787235) internal successors, (98), 44 states have internal predecessors, (98), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:23,368 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 249 transitions. [2021-05-02 12:34:23,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-05-02 12:34:23,369 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:23,369 INFO L523 BasicCegarLoop]: trace histogram [40, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:23,584 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-05-02 12:34:23,584 INFO L428 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:23,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1247790390, now seen corresponding path program 39 times [2021-05-02 12:34:23,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:23,585 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276205043] [2021-05-02 12:34:23,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:23,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:24,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:24,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:24,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276205043] [2021-05-02 12:34:24,259 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276205043] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:24,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601921451] [2021-05-02 12:34:24,259 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 12:34:24,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s) [2021-05-02 12:34:24,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:24,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 12:34:24,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:24,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:24,550 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:24,550 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601921451] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:24,550 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:24,551 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44] total 48 [2021-05-02 12:34:24,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130197702] [2021-05-02 12:34:24,551 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states [2021-05-02 12:34:24,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:24,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-05-02 12:34:24,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=915, Invalid=1341, Unknown=0, NotChecked=0, Total=2256 [2021-05-02 12:34:24,552 INFO L87 Difference]: Start difference. First operand 210 states and 249 transitions. Second operand has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 45 states have internal predecessors, (100), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:26,233 INFO L93 Difference]: Finished difference Result 228 states and 269 transitions. [2021-05-02 12:34:26,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-05-02 12:34:26,233 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 45 states have internal predecessors, (100), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-05-02 12:34:26,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:26,234 INFO L225 Difference]: With dead ends: 228 [2021-05-02 12:34:26,234 INFO L226 Difference]: Without dead ends: 222 [2021-05-02 12:34:26,235 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1257 ImplicationChecksByTransitivity, 1902.3ms TimeCoverageRelationStatistics Valid=2649, Invalid=5361, Unknown=0, NotChecked=0, Total=8010 [2021-05-02 12:34:26,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-05-02 12:34:26,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 215. [2021-05-02 12:34:26,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 210 states have (on average 1.1952380952380952) internal successors, (251), 210 states have internal predecessors, (251), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 255 transitions. [2021-05-02 12:34:26,237 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 255 transitions. Word has length 95 [2021-05-02 12:34:26,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:26,237 INFO L480 AbstractCegarLoop]: Abstraction has 215 states and 255 transitions. [2021-05-02 12:34:26,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 48 states, 48 states have (on average 2.0833333333333335) internal successors, (100), 45 states have internal predecessors, (100), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:26,238 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 255 transitions. [2021-05-02 12:34:26,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-05-02 12:34:26,238 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:26,238 INFO L523 BasicCegarLoop]: trace histogram [41, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:26,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:34:26,439 INFO L428 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:26,439 INFO L82 PathProgramCache]: Analyzing trace with hash 472193393, now seen corresponding path program 40 times [2021-05-02 12:34:26,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:26,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108684867] [2021-05-02 12:34:26,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:27,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:27,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:27,124 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:27,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108684867] [2021-05-02 12:34:27,124 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108684867] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:27,124 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944870672] [2021-05-02 12:34:27,124 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 12:34:27,186 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:34:27,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:27,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 44 conjunts are in the unsatisfiable core [2021-05-02 12:34:27,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:27,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:27,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:27,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944870672] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:27,392 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:27,392 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 45] total 49 [2021-05-02 12:34:27,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115407300] [2021-05-02 12:34:27,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states [2021-05-02 12:34:27,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:27,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-05-02 12:34:27,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=958, Invalid=1394, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 12:34:27,393 INFO L87 Difference]: Start difference. First operand 215 states and 255 transitions. Second operand has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 46 states have internal predecessors, (102), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:29,079 INFO L93 Difference]: Finished difference Result 233 states and 275 transitions. [2021-05-02 12:34:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-02 12:34:29,080 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 46 states have internal predecessors, (102), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 97 [2021-05-02 12:34:29,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:29,081 INFO L225 Difference]: With dead ends: 233 [2021-05-02 12:34:29,081 INFO L226 Difference]: Without dead ends: 227 [2021-05-02 12:34:29,081 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 1980.1ms TimeCoverageRelationStatistics Valid=2776, Invalid=5596, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 12:34:29,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-05-02 12:34:29,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 220. [2021-05-02 12:34:29,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 215 states have (on average 1.1953488372093024) internal successors, (257), 215 states have internal predecessors, (257), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:29,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 261 transitions. [2021-05-02 12:34:29,084 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 261 transitions. Word has length 97 [2021-05-02 12:34:29,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:29,084 INFO L480 AbstractCegarLoop]: Abstraction has 220 states and 261 transitions. [2021-05-02 12:34:29,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 49 states, 49 states have (on average 2.0816326530612246) internal successors, (102), 46 states have internal predecessors, (102), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:29,084 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 261 transitions. [2021-05-02 12:34:29,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-05-02 12:34:29,084 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:29,084 INFO L523 BasicCegarLoop]: trace histogram [42, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:29,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:34:29,285 INFO L428 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:29,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:29,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1847178516, now seen corresponding path program 41 times [2021-05-02 12:34:29,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:29,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529830448] [2021-05-02 12:34:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:29,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:29,997 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:29,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529830448] [2021-05-02 12:34:29,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529830448] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:29,997 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664417624] [2021-05-02 12:34:29,997 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 12:34:30,076 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s) [2021-05-02 12:34:30,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:30,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 45 conjunts are in the unsatisfiable core [2021-05-02 12:34:30,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:30,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:30,279 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664417624] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:30,279 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:30,279 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46] total 50 [2021-05-02 12:34:30,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796642239] [2021-05-02 12:34:30,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states [2021-05-02 12:34:30,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:30,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-05-02 12:34:30,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1002, Invalid=1448, Unknown=0, NotChecked=0, Total=2450 [2021-05-02 12:34:30,281 INFO L87 Difference]: Start difference. First operand 220 states and 261 transitions. Second operand has 50 states, 50 states have (on average 2.08) internal successors, (104), 47 states have internal predecessors, (104), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:31,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:31,971 INFO L93 Difference]: Finished difference Result 238 states and 281 transitions. [2021-05-02 12:34:31,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-05-02 12:34:31,972 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 47 states have internal predecessors, (104), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2021-05-02 12:34:31,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:31,973 INFO L225 Difference]: With dead ends: 238 [2021-05-02 12:34:31,973 INFO L226 Difference]: Without dead ends: 232 [2021-05-02 12:34:31,973 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1362 ImplicationChecksByTransitivity, 2009.6ms TimeCoverageRelationStatistics Valid=2906, Invalid=5836, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 12:34:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-05-02 12:34:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 225. [2021-05-02 12:34:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 220 states have (on average 1.1954545454545455) internal successors, (263), 220 states have internal predecessors, (263), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 267 transitions. [2021-05-02 12:34:31,976 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 267 transitions. Word has length 99 [2021-05-02 12:34:31,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:31,976 INFO L480 AbstractCegarLoop]: Abstraction has 225 states and 267 transitions. [2021-05-02 12:34:31,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 50 states, 50 states have (on average 2.08) internal successors, (104), 47 states have internal predecessors, (104), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:31,976 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 267 transitions. [2021-05-02 12:34:31,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-05-02 12:34:31,977 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:31,977 INFO L523 BasicCegarLoop]: trace histogram [43, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:32,192 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-05-02 12:34:32,192 INFO L428 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:32,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:32,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1675556441, now seen corresponding path program 42 times [2021-05-02 12:34:32,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:32,194 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313732098] [2021-05-02 12:34:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:32,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:32,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:32,974 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:32,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313732098] [2021-05-02 12:34:32,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313732098] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:32,974 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794088747] [2021-05-02 12:34:32,974 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 12:34:33,068 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s) [2021-05-02 12:34:33,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:33,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 12:34:33,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:33,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:33,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794088747] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:33,286 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:33,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 47] total 51 [2021-05-02 12:34:33,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540108393] [2021-05-02 12:34:33,287 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-05-02 12:34:33,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:33,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-05-02 12:34:33,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1047, Invalid=1503, Unknown=0, NotChecked=0, Total=2550 [2021-05-02 12:34:33,287 INFO L87 Difference]: Start difference. First operand 225 states and 267 transitions. Second operand has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 48 states have internal predecessors, (106), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:35,089 INFO L93 Difference]: Finished difference Result 243 states and 287 transitions. [2021-05-02 12:34:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-05-02 12:34:35,089 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 48 states have internal predecessors, (106), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 101 [2021-05-02 12:34:35,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:35,090 INFO L225 Difference]: With dead ends: 243 [2021-05-02 12:34:35,090 INFO L226 Difference]: Without dead ends: 237 [2021-05-02 12:34:35,091 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1416 ImplicationChecksByTransitivity, 2118.2ms TimeCoverageRelationStatistics Valid=3039, Invalid=6081, Unknown=0, NotChecked=0, Total=9120 [2021-05-02 12:34:35,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-05-02 12:34:35,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 230. [2021-05-02 12:34:35,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 225 states have (on average 1.1955555555555555) internal successors, (269), 225 states have internal predecessors, (269), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:35,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 273 transitions. [2021-05-02 12:34:35,093 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 273 transitions. Word has length 101 [2021-05-02 12:34:35,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:35,093 INFO L480 AbstractCegarLoop]: Abstraction has 230 states and 273 transitions. [2021-05-02 12:34:35,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 51 states, 51 states have (on average 2.0784313725490198) internal successors, (106), 48 states have internal predecessors, (106), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:35,093 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 273 transitions. [2021-05-02 12:34:35,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-05-02 12:34:35,094 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:35,094 INFO L523 BasicCegarLoop]: trace histogram [44, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:35,306 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:34:35,307 INFO L428 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:35,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:35,307 INFO L82 PathProgramCache]: Analyzing trace with hash 44500386, now seen corresponding path program 43 times [2021-05-02 12:34:35,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:35,307 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130132702] [2021-05-02 12:34:35,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:36,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:36,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:36,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130132702] [2021-05-02 12:34:36,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130132702] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:36,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598304225] [2021-05-02 12:34:36,102 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 12:34:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:36,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 12:34:36,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:36,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:36,389 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598304225] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:36,389 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:36,389 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48] total 52 [2021-05-02 12:34:36,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057491863] [2021-05-02 12:34:36,389 INFO L460 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-05-02 12:34:36,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:36,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-05-02 12:34:36,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1093, Invalid=1559, Unknown=0, NotChecked=0, Total=2652 [2021-05-02 12:34:36,390 INFO L87 Difference]: Start difference. First operand 230 states and 273 transitions. Second operand has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 49 states have internal predecessors, (108), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:38,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:38,326 INFO L93 Difference]: Finished difference Result 248 states and 293 transitions. [2021-05-02 12:34:38,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-02 12:34:38,327 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 49 states have internal predecessors, (108), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 103 [2021-05-02 12:34:38,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:38,328 INFO L225 Difference]: With dead ends: 248 [2021-05-02 12:34:38,328 INFO L226 Difference]: Without dead ends: 242 [2021-05-02 12:34:38,328 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1471 ImplicationChecksByTransitivity, 2241.6ms TimeCoverageRelationStatistics Valid=3175, Invalid=6331, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 12:34:38,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-05-02 12:34:38,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 235. [2021-05-02 12:34:38,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 230 states have (on average 1.1956521739130435) internal successors, (275), 230 states have internal predecessors, (275), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 279 transitions. [2021-05-02 12:34:38,333 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 279 transitions. Word has length 103 [2021-05-02 12:34:38,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:38,333 INFO L480 AbstractCegarLoop]: Abstraction has 235 states and 279 transitions. [2021-05-02 12:34:38,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 2.076923076923077) internal successors, (108), 49 states have internal predecessors, (108), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:38,333 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 279 transitions. [2021-05-02 12:34:38,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-05-02 12:34:38,333 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:38,333 INFO L523 BasicCegarLoop]: trace histogram [45, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:38,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:34:38,549 INFO L428 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:38,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:38,549 INFO L82 PathProgramCache]: Analyzing trace with hash -543297827, now seen corresponding path program 44 times [2021-05-02 12:34:38,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:38,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408501748] [2021-05-02 12:34:38,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:39,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:39,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:39,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:39,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408501748] [2021-05-02 12:34:39,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408501748] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:39,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167800028] [2021-05-02 12:34:39,381 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 12:34:39,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:34:39,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:39,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 51 conjunts are in the unsatisfiable core [2021-05-02 12:34:39,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:39,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:39,675 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167800028] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:39,675 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:39,675 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 49] total 53 [2021-05-02 12:34:39,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592220988] [2021-05-02 12:34:39,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 53 states [2021-05-02 12:34:39,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:39,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-05-02 12:34:39,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1140, Invalid=1616, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 12:34:39,676 INFO L87 Difference]: Start difference. First operand 235 states and 279 transitions. Second operand has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 50 states have internal predecessors, (110), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:41,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:41,640 INFO L93 Difference]: Finished difference Result 253 states and 299 transitions. [2021-05-02 12:34:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-05-02 12:34:41,641 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 50 states have internal predecessors, (110), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 105 [2021-05-02 12:34:41,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:41,642 INFO L225 Difference]: With dead ends: 253 [2021-05-02 12:34:41,642 INFO L226 Difference]: Without dead ends: 247 [2021-05-02 12:34:41,642 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1527 ImplicationChecksByTransitivity, 2282.2ms TimeCoverageRelationStatistics Valid=3314, Invalid=6586, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 12:34:41,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2021-05-02 12:34:41,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 240. [2021-05-02 12:34:41,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 235 states have (on average 1.195744680851064) internal successors, (281), 235 states have internal predecessors, (281), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:41,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 285 transitions. [2021-05-02 12:34:41,645 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 285 transitions. Word has length 105 [2021-05-02 12:34:41,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:41,645 INFO L480 AbstractCegarLoop]: Abstraction has 240 states and 285 transitions. [2021-05-02 12:34:41,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 53 states, 53 states have (on average 2.0754716981132075) internal successors, (110), 50 states have internal predecessors, (110), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:41,645 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 285 transitions. [2021-05-02 12:34:41,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 12:34:41,646 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:41,646 INFO L523 BasicCegarLoop]: trace histogram [46, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:41,850 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-05-02 12:34:41,850 INFO L428 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:41,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:41,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1518302552, now seen corresponding path program 45 times [2021-05-02 12:34:41,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:41,851 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011879094] [2021-05-02 12:34:41,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:42,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:42,721 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:42,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011879094] [2021-05-02 12:34:42,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011879094] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:42,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732364510] [2021-05-02 12:34:42,722 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 12:34:42,819 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s) [2021-05-02 12:34:42,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:42,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 52 conjunts are in the unsatisfiable core [2021-05-02 12:34:42,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:42,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:42,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:43,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:43,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:43,043 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732364510] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:43,043 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:43,043 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50] total 54 [2021-05-02 12:34:43,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046669018] [2021-05-02 12:34:43,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-05-02 12:34:43,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:43,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-05-02 12:34:43,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1188, Invalid=1674, Unknown=0, NotChecked=0, Total=2862 [2021-05-02 12:34:43,045 INFO L87 Difference]: Start difference. First operand 240 states and 285 transitions. Second operand has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 51 states have internal predecessors, (112), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:45,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:45,116 INFO L93 Difference]: Finished difference Result 258 states and 305 transitions. [2021-05-02 12:34:45,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-05-02 12:34:45,116 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 51 states have internal predecessors, (112), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 107 [2021-05-02 12:34:45,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:45,117 INFO L225 Difference]: With dead ends: 258 [2021-05-02 12:34:45,117 INFO L226 Difference]: Without dead ends: 252 [2021-05-02 12:34:45,118 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1584 ImplicationChecksByTransitivity, 2399.7ms TimeCoverageRelationStatistics Valid=3456, Invalid=6846, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 12:34:45,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-05-02 12:34:45,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 245. [2021-05-02 12:34:45,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 240 states have (on average 1.1958333333333333) internal successors, (287), 240 states have internal predecessors, (287), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:45,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 291 transitions. [2021-05-02 12:34:45,121 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 291 transitions. Word has length 107 [2021-05-02 12:34:45,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:45,121 INFO L480 AbstractCegarLoop]: Abstraction has 245 states and 291 transitions. [2021-05-02 12:34:45,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 2.074074074074074) internal successors, (112), 51 states have internal predecessors, (112), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:45,121 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 291 transitions. [2021-05-02 12:34:45,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-05-02 12:34:45,121 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:45,121 INFO L523 BasicCegarLoop]: trace histogram [47, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:45,337 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-05-02 12:34:45,337 INFO L428 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:45,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:45,337 INFO L82 PathProgramCache]: Analyzing trace with hash -1558623981, now seen corresponding path program 46 times [2021-05-02 12:34:45,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:45,338 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490143545] [2021-05-02 12:34:45,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:46,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:46,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:46,224 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:46,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490143545] [2021-05-02 12:34:46,224 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490143545] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:46,224 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190735731] [2021-05-02 12:34:46,224 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 12:34:46,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:34:46,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:46,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 50 conjunts are in the unsatisfiable core [2021-05-02 12:34:46,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:46,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:46,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:46,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190735731] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:46,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:46,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 51] total 55 [2021-05-02 12:34:46,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680900188] [2021-05-02 12:34:46,520 INFO L460 AbstractCegarLoop]: Interpolant automaton has 55 states [2021-05-02 12:34:46,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:46,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-05-02 12:34:46,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1237, Invalid=1733, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 12:34:46,520 INFO L87 Difference]: Start difference. First operand 245 states and 291 transitions. Second operand has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 52 states have internal predecessors, (114), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:48,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:48,603 INFO L93 Difference]: Finished difference Result 263 states and 311 transitions. [2021-05-02 12:34:48,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-05-02 12:34:48,604 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 52 states have internal predecessors, (114), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 109 [2021-05-02 12:34:48,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:48,605 INFO L225 Difference]: With dead ends: 263 [2021-05-02 12:34:48,605 INFO L226 Difference]: Without dead ends: 257 [2021-05-02 12:34:48,605 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 2465.2ms TimeCoverageRelationStatistics Valid=3601, Invalid=7111, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 12:34:48,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-05-02 12:34:48,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 250. [2021-05-02 12:34:48,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 245 states have (on average 1.1959183673469387) internal successors, (293), 245 states have internal predecessors, (293), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 297 transitions. [2021-05-02 12:34:48,608 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 297 transitions. Word has length 109 [2021-05-02 12:34:48,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:48,608 INFO L480 AbstractCegarLoop]: Abstraction has 250 states and 297 transitions. [2021-05-02 12:34:48,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 55 states, 55 states have (on average 2.0727272727272728) internal successors, (114), 52 states have internal predecessors, (114), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:48,608 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 297 transitions. [2021-05-02 12:34:48,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 12:34:48,609 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:48,609 INFO L523 BasicCegarLoop]: trace histogram [48, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:48,820 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-05-02 12:34:48,821 INFO L428 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:48,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:48,821 INFO L82 PathProgramCache]: Analyzing trace with hash 747444750, now seen corresponding path program 47 times [2021-05-02 12:34:48,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:48,821 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866235232] [2021-05-02 12:34:48,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:49,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:49,742 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:49,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866235232] [2021-05-02 12:34:49,742 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866235232] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:49,742 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851915159] [2021-05-02 12:34:49,742 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 12:34:49,830 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s) [2021-05-02 12:34:49,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:49,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 54 conjunts are in the unsatisfiable core [2021-05-02 12:34:49,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:49,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:49,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:50,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:50,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:50,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:50,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:50,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:50,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:50,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:50,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:50,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:50,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:50,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851915159] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:50,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:50,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 52] total 56 [2021-05-02 12:34:50,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911518528] [2021-05-02 12:34:50,064 INFO L460 AbstractCegarLoop]: Interpolant automaton has 56 states [2021-05-02 12:34:50,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:50,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-05-02 12:34:50,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1287, Invalid=1793, Unknown=0, NotChecked=0, Total=3080 [2021-05-02 12:34:50,065 INFO L87 Difference]: Start difference. First operand 250 states and 297 transitions. Second operand has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 53 states have internal predecessors, (116), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:52,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:52,139 INFO L93 Difference]: Finished difference Result 268 states and 317 transitions. [2021-05-02 12:34:52,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-05-02 12:34:52,139 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 53 states have internal predecessors, (116), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 111 [2021-05-02 12:34:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:52,140 INFO L225 Difference]: With dead ends: 268 [2021-05-02 12:34:52,140 INFO L226 Difference]: Without dead ends: 262 [2021-05-02 12:34:52,141 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 2538.3ms TimeCoverageRelationStatistics Valid=3749, Invalid=7381, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 12:34:52,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-05-02 12:34:52,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 255. [2021-05-02 12:34:52,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 250 states have (on average 1.196) internal successors, (299), 250 states have internal predecessors, (299), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:52,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 303 transitions. [2021-05-02 12:34:52,144 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 303 transitions. Word has length 111 [2021-05-02 12:34:52,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:52,144 INFO L480 AbstractCegarLoop]: Abstraction has 255 states and 303 transitions. [2021-05-02 12:34:52,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 56 states, 56 states have (on average 2.0714285714285716) internal successors, (116), 53 states have internal predecessors, (116), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:52,144 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 303 transitions. [2021-05-02 12:34:52,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 12:34:52,144 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:52,144 INFO L523 BasicCegarLoop]: trace histogram [49, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:52,360 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,48 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:34:52,360 INFO L428 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:52,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:52,360 INFO L82 PathProgramCache]: Analyzing trace with hash 676370505, now seen corresponding path program 48 times [2021-05-02 12:34:52,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:52,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143113213] [2021-05-02 12:34:52,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:52,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:53,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:53,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:53,321 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:53,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143113213] [2021-05-02 12:34:53,321 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143113213] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:53,321 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488722477] [2021-05-02 12:34:53,322 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 12:34:53,423 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s) [2021-05-02 12:34:53,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:34:53,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 55 conjunts are in the unsatisfiable core [2021-05-02 12:34:53,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:53,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:53,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:53,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488722477] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:53,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:53,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 53] total 57 [2021-05-02 12:34:53,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294919979] [2021-05-02 12:34:53,657 INFO L460 AbstractCegarLoop]: Interpolant automaton has 57 states [2021-05-02 12:34:53,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:53,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-05-02 12:34:53,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1338, Invalid=1854, Unknown=0, NotChecked=0, Total=3192 [2021-05-02 12:34:53,658 INFO L87 Difference]: Start difference. First operand 255 states and 303 transitions. Second operand has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 54 states have internal predecessors, (118), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:55,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:55,821 INFO L93 Difference]: Finished difference Result 273 states and 323 transitions. [2021-05-02 12:34:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-05-02 12:34:55,822 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 54 states have internal predecessors, (118), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2021-05-02 12:34:55,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:55,822 INFO L225 Difference]: With dead ends: 273 [2021-05-02 12:34:55,822 INFO L226 Difference]: Without dead ends: 267 [2021-05-02 12:34:55,823 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 2646.1ms TimeCoverageRelationStatistics Valid=3900, Invalid=7656, Unknown=0, NotChecked=0, Total=11556 [2021-05-02 12:34:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-05-02 12:34:55,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 260. [2021-05-02 12:34:55,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 255 states have (on average 1.196078431372549) internal successors, (305), 255 states have internal predecessors, (305), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:55,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 309 transitions. [2021-05-02 12:34:55,826 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 309 transitions. Word has length 113 [2021-05-02 12:34:55,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:55,826 INFO L480 AbstractCegarLoop]: Abstraction has 260 states and 309 transitions. [2021-05-02 12:34:55,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 57 states, 57 states have (on average 2.0701754385964914) internal successors, (118), 54 states have internal predecessors, (118), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:55,826 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 309 transitions. [2021-05-02 12:34:55,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-05-02 12:34:55,827 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:55,827 INFO L523 BasicCegarLoop]: trace histogram [50, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:56,040 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-05-02 12:34:56,041 INFO L428 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:56,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:56,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1093497796, now seen corresponding path program 49 times [2021-05-02 12:34:56,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:56,041 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666228627] [2021-05-02 12:34:56,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:57,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:34:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:57,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:57,064 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:34:57,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666228627] [2021-05-02 12:34:57,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666228627] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:57,064 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125423851] [2021-05-02 12:34:57,064 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 12:34:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:34:57,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 12:34:57,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:34:57,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:34:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:34:57,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125423851] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:34:57,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:34:57,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 54] total 58 [2021-05-02 12:34:57,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282146159] [2021-05-02 12:34:57,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 58 states [2021-05-02 12:34:57,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:34:57,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2021-05-02 12:34:57,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1390, Invalid=1916, Unknown=0, NotChecked=0, Total=3306 [2021-05-02 12:34:57,362 INFO L87 Difference]: Start difference. First operand 260 states and 309 transitions. Second operand has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 55 states have internal predecessors, (120), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:59,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:34:59,650 INFO L93 Difference]: Finished difference Result 278 states and 329 transitions. [2021-05-02 12:34:59,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-05-02 12:34:59,651 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 55 states have internal predecessors, (120), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 115 [2021-05-02 12:34:59,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:34:59,651 INFO L225 Difference]: With dead ends: 278 [2021-05-02 12:34:59,652 INFO L226 Difference]: Without dead ends: 272 [2021-05-02 12:34:59,652 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1822 ImplicationChecksByTransitivity, 2757.4ms TimeCoverageRelationStatistics Valid=4054, Invalid=7936, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 12:34:59,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-05-02 12:34:59,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 265. [2021-05-02 12:34:59,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 260 states have (on average 1.1961538461538461) internal successors, (311), 260 states have internal predecessors, (311), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:59,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 315 transitions. [2021-05-02 12:34:59,655 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 315 transitions. Word has length 115 [2021-05-02 12:34:59,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:34:59,655 INFO L480 AbstractCegarLoop]: Abstraction has 265 states and 315 transitions. [2021-05-02 12:34:59,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 58 states, 58 states have (on average 2.0689655172413794) internal successors, (120), 55 states have internal predecessors, (120), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:34:59,655 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 315 transitions. [2021-05-02 12:34:59,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-05-02 12:34:59,656 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:34:59,656 INFO L523 BasicCegarLoop]: trace histogram [51, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:34:59,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:34:59,871 INFO L428 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:34:59,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:34:59,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1774101377, now seen corresponding path program 50 times [2021-05-02 12:34:59,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:34:59,872 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529768365] [2021-05-02 12:34:59,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:34:59,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:00,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:00,961 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:00,961 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:00,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529768365] [2021-05-02 12:35:00,961 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529768365] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:00,961 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319602351] [2021-05-02 12:35:00,961 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 12:35:01,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:35:01,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:01,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 12:35:01,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:01,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:01,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319602351] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:01,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:01,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 55] total 59 [2021-05-02 12:35:01,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060915039] [2021-05-02 12:35:01,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states [2021-05-02 12:35:01,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:01,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-05-02 12:35:01,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1443, Invalid=1979, Unknown=0, NotChecked=0, Total=3422 [2021-05-02 12:35:01,279 INFO L87 Difference]: Start difference. First operand 265 states and 315 transitions. Second operand has 59 states, 59 states have (on average 2.0677966101694913) internal successors, (122), 56 states have internal predecessors, (122), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:03,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:03,686 INFO L93 Difference]: Finished difference Result 283 states and 335 transitions. [2021-05-02 12:35:03,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-05-02 12:35:03,686 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.0677966101694913) internal successors, (122), 56 states have internal predecessors, (122), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 117 [2021-05-02 12:35:03,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:03,687 INFO L225 Difference]: With dead ends: 283 [2021-05-02 12:35:03,687 INFO L226 Difference]: Without dead ends: 277 [2021-05-02 12:35:03,688 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1884 ImplicationChecksByTransitivity, 2903.2ms TimeCoverageRelationStatistics Valid=4211, Invalid=8221, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 12:35:03,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-05-02 12:35:03,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 270. [2021-05-02 12:35:03,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 265 states have (on average 1.1962264150943396) internal successors, (317), 265 states have internal predecessors, (317), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:03,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 321 transitions. [2021-05-02 12:35:03,691 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 321 transitions. Word has length 117 [2021-05-02 12:35:03,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:03,691 INFO L480 AbstractCegarLoop]: Abstraction has 270 states and 321 transitions. [2021-05-02 12:35:03,691 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 59 states, 59 states have (on average 2.0677966101694913) internal successors, (122), 56 states have internal predecessors, (122), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:03,691 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 321 transitions. [2021-05-02 12:35:03,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-05-02 12:35:03,692 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:03,692 INFO L523 BasicCegarLoop]: trace histogram [52, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:03,905 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:03,905 INFO L428 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:03,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:03,905 INFO L82 PathProgramCache]: Analyzing trace with hash -167902598, now seen corresponding path program 51 times [2021-05-02 12:35:03,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:03,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434520193] [2021-05-02 12:35:03,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:03,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:05,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:05,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:05,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:05,073 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:05,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434520193] [2021-05-02 12:35:05,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434520193] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:05,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606959146] [2021-05-02 12:35:05,073 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 12:35:05,190 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s) [2021-05-02 12:35:05,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:05,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 58 conjunts are in the unsatisfiable core [2021-05-02 12:35:05,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:05,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:05,432 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606959146] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:05,432 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:05,432 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 56] total 60 [2021-05-02 12:35:05,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699016447] [2021-05-02 12:35:05,433 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states [2021-05-02 12:35:05,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:05,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2021-05-02 12:35:05,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1497, Invalid=2043, Unknown=0, NotChecked=0, Total=3540 [2021-05-02 12:35:05,433 INFO L87 Difference]: Start difference. First operand 270 states and 321 transitions. Second operand has 60 states, 60 states have (on average 2.066666666666667) internal successors, (124), 57 states have internal predecessors, (124), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:07,823 INFO L93 Difference]: Finished difference Result 288 states and 341 transitions. [2021-05-02 12:35:07,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-02 12:35:07,823 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 60 states have (on average 2.066666666666667) internal successors, (124), 57 states have internal predecessors, (124), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2021-05-02 12:35:07,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:07,824 INFO L225 Difference]: With dead ends: 288 [2021-05-02 12:35:07,824 INFO L226 Difference]: Without dead ends: 282 [2021-05-02 12:35:07,825 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1947 ImplicationChecksByTransitivity, 2984.5ms TimeCoverageRelationStatistics Valid=4371, Invalid=8511, Unknown=0, NotChecked=0, Total=12882 [2021-05-02 12:35:07,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-05-02 12:35:07,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 275. [2021-05-02 12:35:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 270 states have (on average 1.1962962962962962) internal successors, (323), 270 states have internal predecessors, (323), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:07,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 327 transitions. [2021-05-02 12:35:07,827 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 327 transitions. Word has length 119 [2021-05-02 12:35:07,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:07,828 INFO L480 AbstractCegarLoop]: Abstraction has 275 states and 327 transitions. [2021-05-02 12:35:07,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 60 states, 60 states have (on average 2.066666666666667) internal successors, (124), 57 states have internal predecessors, (124), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:07,828 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 327 transitions. [2021-05-02 12:35:07,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-05-02 12:35:07,828 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:07,828 INFO L523 BasicCegarLoop]: trace histogram [53, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:08,045 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2021-05-02 12:35:08,045 INFO L428 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:08,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:08,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1495864757, now seen corresponding path program 52 times [2021-05-02 12:35:08,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:08,045 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760314664] [2021-05-02 12:35:08,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:09,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:09,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:09,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:09,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760314664] [2021-05-02 12:35:09,165 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760314664] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:09,165 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864258127] [2021-05-02 12:35:09,166 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 12:35:09,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:35:09,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:09,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 12:35:09,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:09,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:09,502 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864258127] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:09,502 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:09,502 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 57] total 61 [2021-05-02 12:35:09,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536886374] [2021-05-02 12:35:09,502 INFO L460 AbstractCegarLoop]: Interpolant automaton has 61 states [2021-05-02 12:35:09,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:09,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-05-02 12:35:09,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1552, Invalid=2108, Unknown=0, NotChecked=0, Total=3660 [2021-05-02 12:35:09,503 INFO L87 Difference]: Start difference. First operand 275 states and 327 transitions. Second operand has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 58 states have internal predecessors, (126), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:12,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:12,036 INFO L93 Difference]: Finished difference Result 293 states and 347 transitions. [2021-05-02 12:35:12,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-05-02 12:35:12,037 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 58 states have internal predecessors, (126), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 121 [2021-05-02 12:35:12,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:12,038 INFO L225 Difference]: With dead ends: 293 [2021-05-02 12:35:12,038 INFO L226 Difference]: Without dead ends: 287 [2021-05-02 12:35:12,039 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2011 ImplicationChecksByTransitivity, 3033.2ms TimeCoverageRelationStatistics Valid=4534, Invalid=8806, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 12:35:12,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-05-02 12:35:12,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 280. [2021-05-02 12:35:12,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 275 states have (on average 1.1963636363636363) internal successors, (329), 275 states have internal predecessors, (329), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 333 transitions. [2021-05-02 12:35:12,041 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 333 transitions. Word has length 121 [2021-05-02 12:35:12,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:12,041 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 333 transitions. [2021-05-02 12:35:12,041 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 61 states, 61 states have (on average 2.0655737704918034) internal successors, (126), 58 states have internal predecessors, (126), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:12,042 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 333 transitions. [2021-05-02 12:35:12,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-05-02 12:35:12,042 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:12,042 INFO L523 BasicCegarLoop]: trace histogram [54, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:12,261 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:12,261 INFO L428 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:12,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:12,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1646508496, now seen corresponding path program 53 times [2021-05-02 12:35:12,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:12,262 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106753129] [2021-05-02 12:35:12,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:12,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:13,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:13,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:13,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:13,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:13,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106753129] [2021-05-02 12:35:13,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106753129] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:13,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259137053] [2021-05-02 12:35:13,423 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 12:35:13,519 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s) [2021-05-02 12:35:13,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:13,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 60 conjunts are in the unsatisfiable core [2021-05-02 12:35:13,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:13,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:13,772 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259137053] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:13,772 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:13,772 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 58] total 62 [2021-05-02 12:35:13,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411287230] [2021-05-02 12:35:13,773 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states [2021-05-02 12:35:13,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:13,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2021-05-02 12:35:13,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1608, Invalid=2174, Unknown=0, NotChecked=0, Total=3782 [2021-05-02 12:35:13,773 INFO L87 Difference]: Start difference. First operand 280 states and 333 transitions. Second operand has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 59 states have internal predecessors, (128), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:16,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:16,403 INFO L93 Difference]: Finished difference Result 298 states and 353 transitions. [2021-05-02 12:35:16,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-05-02 12:35:16,403 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 59 states have internal predecessors, (128), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 123 [2021-05-02 12:35:16,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:16,404 INFO L225 Difference]: With dead ends: 298 [2021-05-02 12:35:16,404 INFO L226 Difference]: Without dead ends: 292 [2021-05-02 12:35:16,405 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2076 ImplicationChecksByTransitivity, 3152.3ms TimeCoverageRelationStatistics Valid=4700, Invalid=9106, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 12:35:16,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-05-02 12:35:16,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 285. [2021-05-02 12:35:16,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 280 states have (on average 1.1964285714285714) internal successors, (335), 280 states have internal predecessors, (335), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:16,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 339 transitions. [2021-05-02 12:35:16,407 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 339 transitions. Word has length 123 [2021-05-02 12:35:16,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:16,408 INFO L480 AbstractCegarLoop]: Abstraction has 285 states and 339 transitions. [2021-05-02 12:35:16,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 62 states, 62 states have (on average 2.064516129032258) internal successors, (128), 59 states have internal predecessors, (128), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:16,408 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 339 transitions. [2021-05-02 12:35:16,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-05-02 12:35:16,408 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:16,408 INFO L523 BasicCegarLoop]: trace histogram [55, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:16,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-05-02 12:35:16,624 INFO L428 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:16,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:16,624 INFO L82 PathProgramCache]: Analyzing trace with hash -2105195541, now seen corresponding path program 54 times [2021-05-02 12:35:16,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:16,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619280450] [2021-05-02 12:35:16,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:17,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:17,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:17,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:17,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:17,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619280450] [2021-05-02 12:35:17,818 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619280450] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:17,818 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480900917] [2021-05-02 12:35:17,818 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:35:17,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s) [2021-05-02 12:35:17,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:17,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 61 conjunts are in the unsatisfiable core [2021-05-02 12:35:17,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:17,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:17,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,077 WARN L159 QuantifierPusher]: Ignoring assumption. [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 12:35:18,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,097 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 12:35:18,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,123 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 12:35:18,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,133 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 12:35:18,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:18,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:18,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480900917] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:18,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:18,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 59] total 63 [2021-05-02 12:35:18,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574893497] [2021-05-02 12:35:18,196 INFO L460 AbstractCegarLoop]: Interpolant automaton has 63 states [2021-05-02 12:35:18,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:18,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-05-02 12:35:18,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1665, Invalid=2241, Unknown=0, NotChecked=0, Total=3906 [2021-05-02 12:35:18,197 INFO L87 Difference]: Start difference. First operand 285 states and 339 transitions. Second operand has 63 states, 63 states have (on average 2.0634920634920637) internal successors, (130), 60 states have internal predecessors, (130), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:20,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:20,902 INFO L93 Difference]: Finished difference Result 303 states and 359 transitions. [2021-05-02 12:35:20,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-05-02 12:35:20,902 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 2.0634920634920637) internal successors, (130), 60 states have internal predecessors, (130), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2021-05-02 12:35:20,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:20,903 INFO L225 Difference]: With dead ends: 303 [2021-05-02 12:35:20,903 INFO L226 Difference]: Without dead ends: 297 [2021-05-02 12:35:20,904 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2142 ImplicationChecksByTransitivity, 3246.7ms TimeCoverageRelationStatistics Valid=4869, Invalid=9411, Unknown=0, NotChecked=0, Total=14280 [2021-05-02 12:35:20,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-05-02 12:35:20,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 290. [2021-05-02 12:35:20,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 285 states have (on average 1.1964912280701754) internal successors, (341), 285 states have internal predecessors, (341), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 345 transitions. [2021-05-02 12:35:20,906 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 345 transitions. Word has length 125 [2021-05-02 12:35:20,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:20,906 INFO L480 AbstractCegarLoop]: Abstraction has 290 states and 345 transitions. [2021-05-02 12:35:20,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 63 states, 63 states have (on average 2.0634920634920637) internal successors, (130), 60 states have internal predecessors, (130), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:20,906 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 345 transitions. [2021-05-02 12:35:20,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 12:35:20,907 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:20,907 INFO L523 BasicCegarLoop]: trace histogram [56, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:21,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-05-02 12:35:21,121 INFO L428 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:21,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:21,121 INFO L82 PathProgramCache]: Analyzing trace with hash -521814298, now seen corresponding path program 55 times [2021-05-02 12:35:21,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:21,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215664778] [2021-05-02 12:35:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:22,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:22,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:22,357 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:22,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215664778] [2021-05-02 12:35:22,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215664778] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:22,358 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638544455] [2021-05-02 12:35:22,358 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 12:35:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:22,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 12:35:22,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:22,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:22,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638544455] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:22,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:22,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 60] total 64 [2021-05-02 12:35:22,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598130228] [2021-05-02 12:35:22,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 64 states [2021-05-02 12:35:22,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:22,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-05-02 12:35:22,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1723, Invalid=2309, Unknown=0, NotChecked=0, Total=4032 [2021-05-02 12:35:22,689 INFO L87 Difference]: Start difference. First operand 290 states and 345 transitions. Second operand has 64 states, 64 states have (on average 2.0625) internal successors, (132), 61 states have internal predecessors, (132), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:25,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:25,440 INFO L93 Difference]: Finished difference Result 308 states and 365 transitions. [2021-05-02 12:35:25,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-05-02 12:35:25,440 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.0625) internal successors, (132), 61 states have internal predecessors, (132), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 127 [2021-05-02 12:35:25,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:25,441 INFO L225 Difference]: With dead ends: 308 [2021-05-02 12:35:25,441 INFO L226 Difference]: Without dead ends: 302 [2021-05-02 12:35:25,442 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2209 ImplicationChecksByTransitivity, 3345.3ms TimeCoverageRelationStatistics Valid=5041, Invalid=9721, Unknown=0, NotChecked=0, Total=14762 [2021-05-02 12:35:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-05-02 12:35:25,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 295. [2021-05-02 12:35:25,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 290 states have (on average 1.196551724137931) internal successors, (347), 290 states have internal predecessors, (347), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:25,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 351 transitions. [2021-05-02 12:35:25,444 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 351 transitions. Word has length 127 [2021-05-02 12:35:25,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:25,445 INFO L480 AbstractCegarLoop]: Abstraction has 295 states and 351 transitions. [2021-05-02 12:35:25,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 64 states, 64 states have (on average 2.0625) internal successors, (132), 61 states have internal predecessors, (132), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:25,445 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 351 transitions. [2021-05-02 12:35:25,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 12:35:25,445 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:25,445 INFO L523 BasicCegarLoop]: trace histogram [57, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:25,646 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:25,646 INFO L428 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:25,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:25,646 INFO L82 PathProgramCache]: Analyzing trace with hash 689137441, now seen corresponding path program 56 times [2021-05-02 12:35:25,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:25,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662735100] [2021-05-02 12:35:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:26,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:26,953 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:26,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662735100] [2021-05-02 12:35:26,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662735100] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:26,953 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669573012] [2021-05-02 12:35:26,953 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 12:35:27,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:35:27,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:27,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 529 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 12:35:27,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:27,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,076 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 12:35:27,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:27,305 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669573012] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:27,305 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:27,305 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 61] total 65 [2021-05-02 12:35:27,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546075536] [2021-05-02 12:35:27,306 INFO L460 AbstractCegarLoop]: Interpolant automaton has 65 states [2021-05-02 12:35:27,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:27,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-05-02 12:35:27,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1782, Invalid=2378, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 12:35:27,306 INFO L87 Difference]: Start difference. First operand 295 states and 351 transitions. Second operand has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 62 states have internal predecessors, (134), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:30,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:30,145 INFO L93 Difference]: Finished difference Result 313 states and 371 transitions. [2021-05-02 12:35:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-05-02 12:35:30,146 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 62 states have internal predecessors, (134), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 129 [2021-05-02 12:35:30,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:30,147 INFO L225 Difference]: With dead ends: 313 [2021-05-02 12:35:30,147 INFO L226 Difference]: Without dead ends: 307 [2021-05-02 12:35:30,147 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2277 ImplicationChecksByTransitivity, 3471.0ms TimeCoverageRelationStatistics Valid=5216, Invalid=10036, Unknown=0, NotChecked=0, Total=15252 [2021-05-02 12:35:30,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-05-02 12:35:30,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 300. [2021-05-02 12:35:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 295 states have (on average 1.1966101694915254) internal successors, (353), 295 states have internal predecessors, (353), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 357 transitions. [2021-05-02 12:35:30,150 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 357 transitions. Word has length 129 [2021-05-02 12:35:30,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:30,150 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 357 transitions. [2021-05-02 12:35:30,150 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 65 states, 65 states have (on average 2.0615384615384613) internal successors, (134), 62 states have internal predecessors, (134), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:30,150 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 357 transitions. [2021-05-02 12:35:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-05-02 12:35:30,151 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:30,151 INFO L523 BasicCegarLoop]: trace histogram [58, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:30,366 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2021-05-02 12:35:30,366 INFO L428 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:30,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:30,366 INFO L82 PathProgramCache]: Analyzing trace with hash 477621404, now seen corresponding path program 57 times [2021-05-02 12:35:30,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:30,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457744079] [2021-05-02 12:35:30,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:31,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:31,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:31,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:31,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457744079] [2021-05-02 12:35:31,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457744079] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:31,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909063756] [2021-05-02 12:35:31,693 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 12:35:31,817 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s) [2021-05-02 12:35:31,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:31,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 64 conjunts are in the unsatisfiable core [2021-05-02 12:35:31,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:31,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:31,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:32,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:32,087 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909063756] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:32,087 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:32,087 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 62] total 66 [2021-05-02 12:35:32,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534583423] [2021-05-02 12:35:32,088 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states [2021-05-02 12:35:32,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:32,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-05-02 12:35:32,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1842, Invalid=2448, Unknown=0, NotChecked=0, Total=4290 [2021-05-02 12:35:32,088 INFO L87 Difference]: Start difference. First operand 300 states and 357 transitions. Second operand has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 63 states have internal predecessors, (136), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:34,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:34,905 INFO L93 Difference]: Finished difference Result 318 states and 377 transitions. [2021-05-02 12:35:34,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-05-02 12:35:34,906 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 63 states have internal predecessors, (136), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 131 [2021-05-02 12:35:34,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:34,907 INFO L225 Difference]: With dead ends: 318 [2021-05-02 12:35:34,907 INFO L226 Difference]: Without dead ends: 312 [2021-05-02 12:35:34,908 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2346 ImplicationChecksByTransitivity, 3567.6ms TimeCoverageRelationStatistics Valid=5394, Invalid=10356, Unknown=0, NotChecked=0, Total=15750 [2021-05-02 12:35:34,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-05-02 12:35:34,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 305. [2021-05-02 12:35:34,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 300 states have (on average 1.1966666666666668) internal successors, (359), 300 states have internal predecessors, (359), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:34,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 363 transitions. [2021-05-02 12:35:34,911 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 363 transitions. Word has length 131 [2021-05-02 12:35:34,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:34,911 INFO L480 AbstractCegarLoop]: Abstraction has 305 states and 363 transitions. [2021-05-02 12:35:34,911 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 66 states, 66 states have (on average 2.0606060606060606) internal successors, (136), 63 states have internal predecessors, (136), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:34,911 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 363 transitions. [2021-05-02 12:35:34,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-05-02 12:35:34,911 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:34,912 INFO L523 BasicCegarLoop]: trace histogram [59, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:35,124 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:35,125 INFO L428 AbstractCegarLoop]: === Iteration 60 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:35,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:35,125 INFO L82 PathProgramCache]: Analyzing trace with hash -925827241, now seen corresponding path program 58 times [2021-05-02 12:35:35,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:35,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201382717] [2021-05-02 12:35:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:36,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:36,490 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:36,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201382717] [2021-05-02 12:35:36,490 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201382717] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:36,490 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394447534] [2021-05-02 12:35:36,490 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 12:35:36,570 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:35:36,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:36,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 62 conjunts are in the unsatisfiable core [2021-05-02 12:35:36,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:36,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,612 WARN L159 QuantifierPusher]: Ignoring assumption. [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 12:35:36,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,628 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 12:35:36,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,645 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 12:35:36,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,662 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 12:35:36,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,679 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 12:35:36,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,699 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 12:35:36,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:36,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:36,848 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394447534] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:36,848 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:36,848 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 63] total 67 [2021-05-02 12:35:36,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500531811] [2021-05-02 12:35:36,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 67 states [2021-05-02 12:35:36,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:36,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2021-05-02 12:35:36,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1903, Invalid=2519, Unknown=0, NotChecked=0, Total=4422 [2021-05-02 12:35:36,849 INFO L87 Difference]: Start difference. First operand 305 states and 363 transitions. Second operand has 67 states, 67 states have (on average 2.0597014925373136) internal successors, (138), 64 states have internal predecessors, (138), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:39,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:39,847 INFO L93 Difference]: Finished difference Result 323 states and 383 transitions. [2021-05-02 12:35:39,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-05-02 12:35:39,848 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.0597014925373136) internal successors, (138), 64 states have internal predecessors, (138), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 133 [2021-05-02 12:35:39,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:39,849 INFO L225 Difference]: With dead ends: 323 [2021-05-02 12:35:39,849 INFO L226 Difference]: Without dead ends: 317 [2021-05-02 12:35:39,849 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2416 ImplicationChecksByTransitivity, 3677.2ms TimeCoverageRelationStatistics Valid=5575, Invalid=10681, Unknown=0, NotChecked=0, Total=16256 [2021-05-02 12:35:39,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-05-02 12:35:39,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 310. [2021-05-02 12:35:39,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 305 states have (on average 1.1967213114754098) internal successors, (365), 305 states have internal predecessors, (365), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 369 transitions. [2021-05-02 12:35:39,852 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 369 transitions. Word has length 133 [2021-05-02 12:35:39,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:39,852 INFO L480 AbstractCegarLoop]: Abstraction has 310 states and 369 transitions. [2021-05-02 12:35:39,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 67 states, 67 states have (on average 2.0597014925373136) internal successors, (138), 64 states have internal predecessors, (138), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:39,852 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 369 transitions. [2021-05-02 12:35:39,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-02 12:35:39,853 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:39,853 INFO L523 BasicCegarLoop]: trace histogram [60, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:40,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-02 12:35:40,069 INFO L428 AbstractCegarLoop]: === Iteration 61 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:40,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:40,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1020244142, now seen corresponding path program 59 times [2021-05-02 12:35:40,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:40,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42984057] [2021-05-02 12:35:40,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:40,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:41,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:41,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:41,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42984057] [2021-05-02 12:35:41,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42984057] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:41,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411801538] [2021-05-02 12:35:41,493 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 12:35:41,604 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s) [2021-05-02 12:35:41,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:41,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 66 conjunts are in the unsatisfiable core [2021-05-02 12:35:41,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:41,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:41,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411801538] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:41,918 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:41,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 64] total 68 [2021-05-02 12:35:41,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926274315] [2021-05-02 12:35:41,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states [2021-05-02 12:35:41,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:41,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-05-02 12:35:41,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1965, Invalid=2591, Unknown=0, NotChecked=0, Total=4556 [2021-05-02 12:35:41,920 INFO L87 Difference]: Start difference. First operand 310 states and 369 transitions. Second operand has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 65 states have internal predecessors, (140), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:44,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:44,966 INFO L93 Difference]: Finished difference Result 328 states and 389 transitions. [2021-05-02 12:35:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-05-02 12:35:44,967 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 65 states have internal predecessors, (140), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2021-05-02 12:35:44,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:44,967 INFO L225 Difference]: With dead ends: 328 [2021-05-02 12:35:44,967 INFO L226 Difference]: Without dead ends: 322 [2021-05-02 12:35:44,968 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2487 ImplicationChecksByTransitivity, 3808.6ms TimeCoverageRelationStatistics Valid=5759, Invalid=11011, Unknown=0, NotChecked=0, Total=16770 [2021-05-02 12:35:44,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-05-02 12:35:44,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 315. [2021-05-02 12:35:44,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 310 states have (on average 1.196774193548387) internal successors, (371), 310 states have internal predecessors, (371), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:44,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 375 transitions. [2021-05-02 12:35:44,972 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 375 transitions. Word has length 135 [2021-05-02 12:35:44,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:44,972 INFO L480 AbstractCegarLoop]: Abstraction has 315 states and 375 transitions. [2021-05-02 12:35:44,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 68 states, 68 states have (on average 2.0588235294117645) internal successors, (140), 65 states have internal predecessors, (140), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:44,972 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 375 transitions. [2021-05-02 12:35:44,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-05-02 12:35:44,973 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:44,973 INFO L523 BasicCegarLoop]: trace histogram [61, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:45,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:45,173 INFO L428 AbstractCegarLoop]: === Iteration 62 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:45,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:45,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1560572787, now seen corresponding path program 60 times [2021-05-02 12:35:45,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:45,174 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593696367] [2021-05-02 12:35:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:46,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:46,669 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:46,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593696367] [2021-05-02 12:35:46,669 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593696367] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:46,669 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351814334] [2021-05-02 12:35:46,669 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 12:35:46,808 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s) [2021-05-02 12:35:46,809 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:46,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 67 conjunts are in the unsatisfiable core [2021-05-02 12:35:46,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:46,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:46,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:47,126 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351814334] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:47,126 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:47,126 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 65] total 69 [2021-05-02 12:35:47,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652153727] [2021-05-02 12:35:47,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 69 states [2021-05-02 12:35:47,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:47,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2021-05-02 12:35:47,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2028, Invalid=2664, Unknown=0, NotChecked=0, Total=4692 [2021-05-02 12:35:47,127 INFO L87 Difference]: Start difference. First operand 315 states and 375 transitions. Second operand has 69 states, 69 states have (on average 2.0579710144927534) internal successors, (142), 66 states have internal predecessors, (142), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:50,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:50,233 INFO L93 Difference]: Finished difference Result 333 states and 395 transitions. [2021-05-02 12:35:50,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-05-02 12:35:50,233 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.0579710144927534) internal successors, (142), 66 states have internal predecessors, (142), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 137 [2021-05-02 12:35:50,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:50,234 INFO L225 Difference]: With dead ends: 333 [2021-05-02 12:35:50,234 INFO L226 Difference]: Without dead ends: 327 [2021-05-02 12:35:50,235 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 3968.8ms TimeCoverageRelationStatistics Valid=5946, Invalid=11346, Unknown=0, NotChecked=0, Total=17292 [2021-05-02 12:35:50,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-05-02 12:35:50,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 320. [2021-05-02 12:35:50,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 315 states have (on average 1.1968253968253968) internal successors, (377), 315 states have internal predecessors, (377), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:50,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 381 transitions. [2021-05-02 12:35:50,238 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 381 transitions. Word has length 137 [2021-05-02 12:35:50,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:50,238 INFO L480 AbstractCegarLoop]: Abstraction has 320 states and 381 transitions. [2021-05-02 12:35:50,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 69 states, 69 states have (on average 2.0579710144927534) internal successors, (142), 66 states have internal predecessors, (142), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:50,238 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 381 transitions. [2021-05-02 12:35:50,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-05-02 12:35:50,238 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:50,239 INFO L523 BasicCegarLoop]: trace histogram [62, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:50,452 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-05-02 12:35:50,453 INFO L428 AbstractCegarLoop]: === Iteration 63 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:50,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:50,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1125357816, now seen corresponding path program 61 times [2021-05-02 12:35:50,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:50,453 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470417635] [2021-05-02 12:35:50,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:51,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:51,993 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:51,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470417635] [2021-05-02 12:35:51,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470417635] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:51,993 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991281229] [2021-05-02 12:35:51,994 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 12:35:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:52,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 569 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-02 12:35:52,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:52,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:52,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:52,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991281229] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:52,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:52,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 66] total 70 [2021-05-02 12:35:52,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575394585] [2021-05-02 12:35:52,412 INFO L460 AbstractCegarLoop]: Interpolant automaton has 70 states [2021-05-02 12:35:52,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:52,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-05-02 12:35:52,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2092, Invalid=2738, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 12:35:52,413 INFO L87 Difference]: Start difference. First operand 320 states and 381 transitions. Second operand has 70 states, 70 states have (on average 2.057142857142857) internal successors, (144), 67 states have internal predecessors, (144), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:55,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:35:55,684 INFO L93 Difference]: Finished difference Result 338 states and 401 transitions. [2021-05-02 12:35:55,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-02 12:35:55,685 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 2.057142857142857) internal successors, (144), 67 states have internal predecessors, (144), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 139 [2021-05-02 12:35:55,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:35:55,686 INFO L225 Difference]: With dead ends: 338 [2021-05-02 12:35:55,686 INFO L226 Difference]: Without dead ends: 332 [2021-05-02 12:35:55,687 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2632 ImplicationChecksByTransitivity, 4044.9ms TimeCoverageRelationStatistics Valid=6136, Invalid=11686, Unknown=0, NotChecked=0, Total=17822 [2021-05-02 12:35:55,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-05-02 12:35:55,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 325. [2021-05-02 12:35:55,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 320 states have (on average 1.196875) internal successors, (383), 320 states have internal predecessors, (383), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 387 transitions. [2021-05-02 12:35:55,690 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 387 transitions. Word has length 139 [2021-05-02 12:35:55,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:35:55,690 INFO L480 AbstractCegarLoop]: Abstraction has 325 states and 387 transitions. [2021-05-02 12:35:55,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 70 states, 70 states have (on average 2.057142857142857) internal successors, (144), 67 states have internal predecessors, (144), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:35:55,690 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 387 transitions. [2021-05-02 12:35:55,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-05-02 12:35:55,691 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:35:55,691 INFO L523 BasicCegarLoop]: trace histogram [63, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:35:55,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,62 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:35:55,905 INFO L428 AbstractCegarLoop]: === Iteration 64 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:35:55,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:35:55,905 INFO L82 PathProgramCache]: Analyzing trace with hash 504401603, now seen corresponding path program 62 times [2021-05-02 12:35:55,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:35:55,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718048096] [2021-05-02 12:35:55,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:35:55,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:57,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:35:57,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:35:57,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:57,474 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:35:57,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718048096] [2021-05-02 12:35:57,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718048096] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:57,474 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662857748] [2021-05-02 12:35:57,474 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 12:35:57,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:35:57,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:35:57,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 12:35:57,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:35:57,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:35:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:35:57,874 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662857748] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:35:57,874 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:35:57,874 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 67] total 71 [2021-05-02 12:35:57,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912355210] [2021-05-02 12:35:57,875 INFO L460 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-05-02 12:35:57,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:35:57,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-05-02 12:35:57,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2157, Invalid=2813, Unknown=0, NotChecked=0, Total=4970 [2021-05-02 12:35:57,875 INFO L87 Difference]: Start difference. First operand 325 states and 387 transitions. Second operand has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 68 states have internal predecessors, (146), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:01,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:01,152 INFO L93 Difference]: Finished difference Result 343 states and 407 transitions. [2021-05-02 12:36:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-05-02 12:36:01,153 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 68 states have internal predecessors, (146), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2021-05-02 12:36:01,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:01,153 INFO L225 Difference]: With dead ends: 343 [2021-05-02 12:36:01,153 INFO L226 Difference]: Without dead ends: 337 [2021-05-02 12:36:01,154 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2706 ImplicationChecksByTransitivity, 4174.3ms TimeCoverageRelationStatistics Valid=6329, Invalid=12031, Unknown=0, NotChecked=0, Total=18360 [2021-05-02 12:36:01,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-05-02 12:36:01,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 330. [2021-05-02 12:36:01,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 325 states have (on average 1.196923076923077) internal successors, (389), 325 states have internal predecessors, (389), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:01,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 393 transitions. [2021-05-02 12:36:01,157 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 393 transitions. Word has length 141 [2021-05-02 12:36:01,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:01,157 INFO L480 AbstractCegarLoop]: Abstraction has 330 states and 393 transitions. [2021-05-02 12:36:01,157 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 71 states, 71 states have (on average 2.056338028169014) internal successors, (146), 68 states have internal predecessors, (146), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:01,157 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 393 transitions. [2021-05-02 12:36:01,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 12:36:01,158 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:01,158 INFO L523 BasicCegarLoop]: trace histogram [64, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:01,358 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2021-05-02 12:36:01,359 INFO L428 AbstractCegarLoop]: === Iteration 65 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:01,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:01,359 INFO L82 PathProgramCache]: Analyzing trace with hash -959859778, now seen corresponding path program 63 times [2021-05-02 12:36:01,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:01,359 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621377065] [2021-05-02 12:36:01,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:02,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:02,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:02,966 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:02,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621377065] [2021-05-02 12:36:02,966 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621377065] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:02,966 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962922999] [2021-05-02 12:36:02,966 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 12:36:03,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s) [2021-05-02 12:36:03,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:03,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 12:36:03,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:03,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:03,426 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:03,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962922999] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:03,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:03,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 68] total 72 [2021-05-02 12:36:03,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691404585] [2021-05-02 12:36:03,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states [2021-05-02 12:36:03,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:03,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2021-05-02 12:36:03,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2223, Invalid=2889, Unknown=0, NotChecked=0, Total=5112 [2021-05-02 12:36:03,428 INFO L87 Difference]: Start difference. First operand 330 states and 393 transitions. Second operand has 72 states, 72 states have (on average 2.0555555555555554) internal successors, (148), 69 states have internal predecessors, (148), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:06,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:06,896 INFO L93 Difference]: Finished difference Result 348 states and 413 transitions. [2021-05-02 12:36:06,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-05-02 12:36:06,897 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 2.0555555555555554) internal successors, (148), 69 states have internal predecessors, (148), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2021-05-02 12:36:06,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:06,898 INFO L225 Difference]: With dead ends: 348 [2021-05-02 12:36:06,898 INFO L226 Difference]: Without dead ends: 342 [2021-05-02 12:36:06,899 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2781 ImplicationChecksByTransitivity, 4315.4ms TimeCoverageRelationStatistics Valid=6525, Invalid=12381, Unknown=0, NotChecked=0, Total=18906 [2021-05-02 12:36:06,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-05-02 12:36:06,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 335. [2021-05-02 12:36:06,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 330 states have (on average 1.196969696969697) internal successors, (395), 330 states have internal predecessors, (395), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:06,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 399 transitions. [2021-05-02 12:36:06,905 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 399 transitions. Word has length 143 [2021-05-02 12:36:06,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:06,905 INFO L480 AbstractCegarLoop]: Abstraction has 335 states and 399 transitions. [2021-05-02 12:36:06,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 72 states, 72 states have (on average 2.0555555555555554) internal successors, (148), 69 states have internal predecessors, (148), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:06,905 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 399 transitions. [2021-05-02 12:36:06,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-05-02 12:36:06,906 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:06,906 INFO L523 BasicCegarLoop]: trace histogram [65, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:07,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:07,124 INFO L428 AbstractCegarLoop]: === Iteration 66 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:07,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:07,124 INFO L82 PathProgramCache]: Analyzing trace with hash 634226169, now seen corresponding path program 64 times [2021-05-02 12:36:07,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:07,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157257679] [2021-05-02 12:36:07,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:08,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:08,841 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:08,841 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:08,841 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157257679] [2021-05-02 12:36:08,841 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157257679] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:08,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431040261] [2021-05-02 12:36:08,842 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 12:36:08,924 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:36:08,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:08,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 68 conjunts are in the unsatisfiable core [2021-05-02 12:36:08,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:08,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:08,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:09,252 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431040261] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:09,252 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:09,252 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 69] total 73 [2021-05-02 12:36:09,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754876186] [2021-05-02 12:36:09,252 INFO L460 AbstractCegarLoop]: Interpolant automaton has 73 states [2021-05-02 12:36:09,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:09,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2021-05-02 12:36:09,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2290, Invalid=2966, Unknown=0, NotChecked=0, Total=5256 [2021-05-02 12:36:09,253 INFO L87 Difference]: Start difference. First operand 335 states and 399 transitions. Second operand has 73 states, 73 states have (on average 2.0547945205479454) internal successors, (150), 70 states have internal predecessors, (150), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:12,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:12,855 INFO L93 Difference]: Finished difference Result 353 states and 419 transitions. [2021-05-02 12:36:12,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-05-02 12:36:12,856 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 2.0547945205479454) internal successors, (150), 70 states have internal predecessors, (150), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 145 [2021-05-02 12:36:12,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:12,857 INFO L225 Difference]: With dead ends: 353 [2021-05-02 12:36:12,857 INFO L226 Difference]: Without dead ends: 347 [2021-05-02 12:36:12,858 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2857 ImplicationChecksByTransitivity, 4486.7ms TimeCoverageRelationStatistics Valid=6724, Invalid=12736, Unknown=0, NotChecked=0, Total=19460 [2021-05-02 12:36:12,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-05-02 12:36:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 340. [2021-05-02 12:36:12,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 335 states have (on average 1.1970149253731344) internal successors, (401), 335 states have internal predecessors, (401), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:12,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 405 transitions. [2021-05-02 12:36:12,873 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 405 transitions. Word has length 145 [2021-05-02 12:36:12,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:12,874 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 405 transitions. [2021-05-02 12:36:12,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 73 states, 73 states have (on average 2.0547945205479454) internal successors, (150), 70 states have internal predecessors, (150), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:12,874 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 405 transitions. [2021-05-02 12:36:12,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-05-02 12:36:12,874 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:12,875 INFO L523 BasicCegarLoop]: trace histogram [66, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:13,080 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-02 12:36:13,081 INFO L428 AbstractCegarLoop]: === Iteration 67 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:13,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:13,081 INFO L82 PathProgramCache]: Analyzing trace with hash -752503436, now seen corresponding path program 65 times [2021-05-02 12:36:13,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:13,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735895067] [2021-05-02 12:36:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:13,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:14,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:14,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:14,792 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:14,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735895067] [2021-05-02 12:36:14,792 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735895067] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:14,792 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714152451] [2021-05-02 12:36:14,792 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 12:36:14,914 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s) [2021-05-02 12:36:14,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:14,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 72 conjunts are in the unsatisfiable core [2021-05-02 12:36:14,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:14,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:14,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:15,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714152451] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:15,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:15,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 70] total 74 [2021-05-02 12:36:15,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563886951] [2021-05-02 12:36:15,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states [2021-05-02 12:36:15,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:15,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2021-05-02 12:36:15,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2358, Invalid=3044, Unknown=0, NotChecked=0, Total=5402 [2021-05-02 12:36:15,230 INFO L87 Difference]: Start difference. First operand 340 states and 405 transitions. Second operand has 74 states, 74 states have (on average 2.054054054054054) internal successors, (152), 71 states have internal predecessors, (152), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:18,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:18,945 INFO L93 Difference]: Finished difference Result 358 states and 425 transitions. [2021-05-02 12:36:18,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-05-02 12:36:18,946 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 74 states have (on average 2.054054054054054) internal successors, (152), 71 states have internal predecessors, (152), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 147 [2021-05-02 12:36:18,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:18,946 INFO L225 Difference]: With dead ends: 358 [2021-05-02 12:36:18,946 INFO L226 Difference]: Without dead ends: 352 [2021-05-02 12:36:18,947 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2934 ImplicationChecksByTransitivity, 4619.1ms TimeCoverageRelationStatistics Valid=6926, Invalid=13096, Unknown=0, NotChecked=0, Total=20022 [2021-05-02 12:36:18,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-05-02 12:36:18,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 345. [2021-05-02 12:36:18,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 340 states have (on average 1.1970588235294117) internal successors, (407), 340 states have internal predecessors, (407), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 411 transitions. [2021-05-02 12:36:18,950 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 411 transitions. Word has length 147 [2021-05-02 12:36:18,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:18,950 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 411 transitions. [2021-05-02 12:36:18,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 74 states, 74 states have (on average 2.054054054054054) internal successors, (152), 71 states have internal predecessors, (152), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:18,950 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 411 transitions. [2021-05-02 12:36:18,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 12:36:18,951 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:18,951 INFO L523 BasicCegarLoop]: trace histogram [67, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:19,164 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2021-05-02 12:36:19,165 INFO L428 AbstractCegarLoop]: === Iteration 68 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:19,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:19,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1959792081, now seen corresponding path program 66 times [2021-05-02 12:36:19,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:19,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300122963] [2021-05-02 12:36:19,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:20,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:20,942 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:20,942 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:20,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300122963] [2021-05-02 12:36:20,942 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300122963] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:20,942 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322976086] [2021-05-02 12:36:20,942 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 12:36:21,080 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s) [2021-05-02 12:36:21,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:21,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 12:36:21,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:21,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:21,429 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:21,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322976086] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:21,430 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:21,430 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 71] total 75 [2021-05-02 12:36:21,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343406862] [2021-05-02 12:36:21,430 INFO L460 AbstractCegarLoop]: Interpolant automaton has 75 states [2021-05-02 12:36:21,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:21,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-05-02 12:36:21,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2427, Invalid=3123, Unknown=0, NotChecked=0, Total=5550 [2021-05-02 12:36:21,431 INFO L87 Difference]: Start difference. First operand 345 states and 411 transitions. Second operand has 75 states, 75 states have (on average 2.0533333333333332) internal successors, (154), 72 states have internal predecessors, (154), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:25,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:25,221 INFO L93 Difference]: Finished difference Result 363 states and 431 transitions. [2021-05-02 12:36:25,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-05-02 12:36:25,221 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 2.0533333333333332) internal successors, (154), 72 states have internal predecessors, (154), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 149 [2021-05-02 12:36:25,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:25,222 INFO L225 Difference]: With dead ends: 363 [2021-05-02 12:36:25,222 INFO L226 Difference]: Without dead ends: 357 [2021-05-02 12:36:25,223 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3012 ImplicationChecksByTransitivity, 4709.0ms TimeCoverageRelationStatistics Valid=7131, Invalid=13461, Unknown=0, NotChecked=0, Total=20592 [2021-05-02 12:36:25,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-05-02 12:36:25,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 350. [2021-05-02 12:36:25,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 345 states have (on average 1.1971014492753622) internal successors, (413), 345 states have internal predecessors, (413), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:25,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 417 transitions. [2021-05-02 12:36:25,226 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 417 transitions. Word has length 149 [2021-05-02 12:36:25,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:25,226 INFO L480 AbstractCegarLoop]: Abstraction has 350 states and 417 transitions. [2021-05-02 12:36:25,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 75 states, 75 states have (on average 2.0533333333333332) internal successors, (154), 72 states have internal predecessors, (154), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:25,226 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 417 transitions. [2021-05-02 12:36:25,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-05-02 12:36:25,227 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:25,227 INFO L523 BasicCegarLoop]: trace histogram [68, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:25,429 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-05-02 12:36:25,429 INFO L428 AbstractCegarLoop]: === Iteration 69 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:25,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:25,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1771957290, now seen corresponding path program 67 times [2021-05-02 12:36:25,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:25,429 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366944205] [2021-05-02 12:36:25,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:27,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:27,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:27,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366944205] [2021-05-02 12:36:27,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366944205] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:27,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616043108] [2021-05-02 12:36:27,270 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 12:36:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:27,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 12:36:27,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:27,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:27,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616043108] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:27,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:27,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 72] total 76 [2021-05-02 12:36:27,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116944222] [2021-05-02 12:36:27,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states [2021-05-02 12:36:27,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:27,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2021-05-02 12:36:27,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2497, Invalid=3203, Unknown=0, NotChecked=0, Total=5700 [2021-05-02 12:36:27,696 INFO L87 Difference]: Start difference. First operand 350 states and 417 transitions. Second operand has 76 states, 76 states have (on average 2.0526315789473686) internal successors, (156), 73 states have internal predecessors, (156), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:31,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:31,539 INFO L93 Difference]: Finished difference Result 368 states and 437 transitions. [2021-05-02 12:36:31,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-05-02 12:36:31,540 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 76 states have (on average 2.0526315789473686) internal successors, (156), 73 states have internal predecessors, (156), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 151 [2021-05-02 12:36:31,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:31,541 INFO L225 Difference]: With dead ends: 368 [2021-05-02 12:36:31,541 INFO L226 Difference]: Without dead ends: 362 [2021-05-02 12:36:31,541 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3091 ImplicationChecksByTransitivity, 4811.8ms TimeCoverageRelationStatistics Valid=7339, Invalid=13831, Unknown=0, NotChecked=0, Total=21170 [2021-05-02 12:36:31,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-05-02 12:36:31,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 355. [2021-05-02 12:36:31,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 350 states have (on average 1.197142857142857) internal successors, (419), 350 states have internal predecessors, (419), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:31,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 423 transitions. [2021-05-02 12:36:31,544 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 423 transitions. Word has length 151 [2021-05-02 12:36:31,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:31,545 INFO L480 AbstractCegarLoop]: Abstraction has 355 states and 423 transitions. [2021-05-02 12:36:31,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 76 states, 76 states have (on average 2.0526315789473686) internal successors, (156), 73 states have internal predecessors, (156), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:31,545 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 423 transitions. [2021-05-02 12:36:31,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-05-02 12:36:31,545 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:31,545 INFO L523 BasicCegarLoop]: trace histogram [69, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:31,760 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:31,761 INFO L428 AbstractCegarLoop]: === Iteration 70 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:31,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:31,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1685410661, now seen corresponding path program 68 times [2021-05-02 12:36:31,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:31,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877123990] [2021-05-02 12:36:31,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:33,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:33,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:33,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:33,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877123990] [2021-05-02 12:36:33,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877123990] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:33,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278433586] [2021-05-02 12:36:33,666 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 12:36:33,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:36:33,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:33,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 12:36:33,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:33,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:33,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:34,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:34,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:34,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:34,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:34,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:34,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:34,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:34,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:34,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:34,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:34,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:34,082 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:34,083 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278433586] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:34,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:34,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 73] total 77 [2021-05-02 12:36:34,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437239710] [2021-05-02 12:36:34,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 77 states [2021-05-02 12:36:34,083 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:34,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-05-02 12:36:34,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2568, Invalid=3284, Unknown=0, NotChecked=0, Total=5852 [2021-05-02 12:36:34,084 INFO L87 Difference]: Start difference. First operand 355 states and 423 transitions. Second operand has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 74 states have internal predecessors, (158), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:38,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:38,078 INFO L93 Difference]: Finished difference Result 373 states and 443 transitions. [2021-05-02 12:36:38,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-05-02 12:36:38,079 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 74 states have internal predecessors, (158), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 153 [2021-05-02 12:36:38,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:38,080 INFO L225 Difference]: With dead ends: 373 [2021-05-02 12:36:38,080 INFO L226 Difference]: Without dead ends: 367 [2021-05-02 12:36:38,081 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3171 ImplicationChecksByTransitivity, 4984.4ms TimeCoverageRelationStatistics Valid=7550, Invalid=14206, Unknown=0, NotChecked=0, Total=21756 [2021-05-02 12:36:38,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-05-02 12:36:38,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 360. [2021-05-02 12:36:38,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 355 states have (on average 1.1971830985915493) internal successors, (425), 355 states have internal predecessors, (425), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:38,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 429 transitions. [2021-05-02 12:36:38,084 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 429 transitions. Word has length 153 [2021-05-02 12:36:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:38,084 INFO L480 AbstractCegarLoop]: Abstraction has 360 states and 429 transitions. [2021-05-02 12:36:38,084 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 77 states, 77 states have (on average 2.051948051948052) internal successors, (158), 74 states have internal predecessors, (158), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 429 transitions. [2021-05-02 12:36:38,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-05-02 12:36:38,085 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:38,085 INFO L523 BasicCegarLoop]: trace histogram [70, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:38,285 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-05-02 12:36:38,285 INFO L428 AbstractCegarLoop]: === Iteration 71 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:38,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:38,286 INFO L82 PathProgramCache]: Analyzing trace with hash 118478816, now seen corresponding path program 69 times [2021-05-02 12:36:38,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:38,286 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543034415] [2021-05-02 12:36:38,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:38,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:40,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:40,243 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:40,243 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:40,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543034415] [2021-05-02 12:36:40,244 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543034415] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:40,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827696780] [2021-05-02 12:36:40,244 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 12:36:40,399 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s) [2021-05-02 12:36:40,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:40,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 76 conjunts are in the unsatisfiable core [2021-05-02 12:36:40,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:40,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:40,743 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:40,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827696780] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:40,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:40,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 74] total 78 [2021-05-02 12:36:40,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261958195] [2021-05-02 12:36:40,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states [2021-05-02 12:36:40,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:40,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-05-02 12:36:40,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2640, Invalid=3366, Unknown=0, NotChecked=0, Total=6006 [2021-05-02 12:36:40,760 INFO L87 Difference]: Start difference. First operand 360 states and 429 transitions. Second operand has 78 states, 78 states have (on average 2.051282051282051) internal successors, (160), 75 states have internal predecessors, (160), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:44,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:44,848 INFO L93 Difference]: Finished difference Result 378 states and 449 transitions. [2021-05-02 12:36:44,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-05-02 12:36:44,849 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 2.051282051282051) internal successors, (160), 75 states have internal predecessors, (160), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 155 [2021-05-02 12:36:44,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:44,850 INFO L225 Difference]: With dead ends: 378 [2021-05-02 12:36:44,850 INFO L226 Difference]: Without dead ends: 372 [2021-05-02 12:36:44,850 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3252 ImplicationChecksByTransitivity, 5117.9ms TimeCoverageRelationStatistics Valid=7764, Invalid=14586, Unknown=0, NotChecked=0, Total=22350 [2021-05-02 12:36:44,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-05-02 12:36:44,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 365. [2021-05-02 12:36:44,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 360 states have (on average 1.1972222222222222) internal successors, (431), 360 states have internal predecessors, (431), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:44,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 435 transitions. [2021-05-02 12:36:44,853 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 435 transitions. Word has length 155 [2021-05-02 12:36:44,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:44,853 INFO L480 AbstractCegarLoop]: Abstraction has 365 states and 435 transitions. [2021-05-02 12:36:44,853 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 78 states, 78 states have (on average 2.051282051282051) internal successors, (160), 75 states have internal predecessors, (160), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 435 transitions. [2021-05-02 12:36:44,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 12:36:44,854 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:44,854 INFO L523 BasicCegarLoop]: trace histogram [71, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:45,054 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,70 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:45,055 INFO L428 AbstractCegarLoop]: === Iteration 72 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:45,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:45,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1830496667, now seen corresponding path program 70 times [2021-05-02 12:36:45,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:45,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223378561] [2021-05-02 12:36:45,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:47,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:47,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:47,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:47,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223378561] [2021-05-02 12:36:47,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223378561] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:47,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840323804] [2021-05-02 12:36:47,081 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 12:36:47,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:36:47,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:47,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 12:36:47,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:47,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:47,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840323804] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:47,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:47,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 75] total 79 [2021-05-02 12:36:47,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515920340] [2021-05-02 12:36:47,556 INFO L460 AbstractCegarLoop]: Interpolant automaton has 79 states [2021-05-02 12:36:47,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:47,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2021-05-02 12:36:47,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2713, Invalid=3449, Unknown=0, NotChecked=0, Total=6162 [2021-05-02 12:36:47,556 INFO L87 Difference]: Start difference. First operand 365 states and 435 transitions. Second operand has 79 states, 79 states have (on average 2.050632911392405) internal successors, (162), 76 states have internal predecessors, (162), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:51,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:51,754 INFO L93 Difference]: Finished difference Result 383 states and 455 transitions. [2021-05-02 12:36:51,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-05-02 12:36:51,754 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 2.050632911392405) internal successors, (162), 76 states have internal predecessors, (162), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 157 [2021-05-02 12:36:51,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:51,755 INFO L225 Difference]: With dead ends: 383 [2021-05-02 12:36:51,755 INFO L226 Difference]: Without dead ends: 377 [2021-05-02 12:36:51,756 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3334 ImplicationChecksByTransitivity, 5345.7ms TimeCoverageRelationStatistics Valid=7981, Invalid=14971, Unknown=0, NotChecked=0, Total=22952 [2021-05-02 12:36:51,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-05-02 12:36:51,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 370. [2021-05-02 12:36:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 365 states have (on average 1.1972602739726028) internal successors, (437), 365 states have internal predecessors, (437), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:51,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 441 transitions. [2021-05-02 12:36:51,765 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 441 transitions. Word has length 157 [2021-05-02 12:36:51,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:51,765 INFO L480 AbstractCegarLoop]: Abstraction has 370 states and 441 transitions. [2021-05-02 12:36:51,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 79 states, 79 states have (on average 2.050632911392405) internal successors, (162), 76 states have internal predecessors, (162), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:51,765 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 441 transitions. [2021-05-02 12:36:51,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-05-02 12:36:51,766 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:51,766 INFO L523 BasicCegarLoop]: trace histogram [72, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:51,981 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2021-05-02 12:36:51,981 INFO L428 AbstractCegarLoop]: === Iteration 73 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:51,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:51,982 INFO L82 PathProgramCache]: Analyzing trace with hash 2107177110, now seen corresponding path program 71 times [2021-05-02 12:36:51,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:51,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329936263] [2021-05-02 12:36:51,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:51,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:54,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:36:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:36:54,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:54,041 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:36:54,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329936263] [2021-05-02 12:36:54,042 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329936263] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:54,042 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996893633] [2021-05-02 12:36:54,042 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 12:36:54,178 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2021-05-02 12:36:54,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:36:54,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 78 conjunts are in the unsatisfiable core [2021-05-02 12:36:54,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:36:54,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:36:54,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:36:54,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996893633] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:36:54,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:36:54,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 76] total 80 [2021-05-02 12:36:54,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603681038] [2021-05-02 12:36:54,572 INFO L460 AbstractCegarLoop]: Interpolant automaton has 80 states [2021-05-02 12:36:54,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:36:54,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-05-02 12:36:54,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2787, Invalid=3533, Unknown=0, NotChecked=0, Total=6320 [2021-05-02 12:36:54,573 INFO L87 Difference]: Start difference. First operand 370 states and 441 transitions. Second operand has 80 states, 80 states have (on average 2.05) internal successors, (164), 77 states have internal predecessors, (164), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:58,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:36:58,945 INFO L93 Difference]: Finished difference Result 388 states and 461 transitions. [2021-05-02 12:36:58,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-05-02 12:36:58,945 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.05) internal successors, (164), 77 states have internal predecessors, (164), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 159 [2021-05-02 12:36:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:36:58,946 INFO L225 Difference]: With dead ends: 388 [2021-05-02 12:36:58,946 INFO L226 Difference]: Without dead ends: 382 [2021-05-02 12:36:58,947 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3417 ImplicationChecksByTransitivity, 5434.1ms TimeCoverageRelationStatistics Valid=8201, Invalid=15361, Unknown=0, NotChecked=0, Total=23562 [2021-05-02 12:36:58,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-05-02 12:36:58,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 375. [2021-05-02 12:36:58,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 370 states have (on average 1.1972972972972973) internal successors, (443), 370 states have internal predecessors, (443), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:58,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 447 transitions. [2021-05-02 12:36:58,950 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 447 transitions. Word has length 159 [2021-05-02 12:36:58,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:36:58,950 INFO L480 AbstractCegarLoop]: Abstraction has 375 states and 447 transitions. [2021-05-02 12:36:58,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 80 states, 80 states have (on average 2.05) internal successors, (164), 77 states have internal predecessors, (164), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:36:58,950 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 447 transitions. [2021-05-02 12:36:58,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-05-02 12:36:58,951 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:36:58,951 INFO L523 BasicCegarLoop]: trace histogram [73, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:36:59,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,72 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:36:59,158 INFO L428 AbstractCegarLoop]: === Iteration 74 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:36:59,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:36:59,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1709110481, now seen corresponding path program 72 times [2021-05-02 12:36:59,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:36:59,159 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681686865] [2021-05-02 12:36:59,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:36:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:01,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:01,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:01,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681686865] [2021-05-02 12:37:01,293 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681686865] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:01,293 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49140038] [2021-05-02 12:37:01,293 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 12:37:01,450 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s) [2021-05-02 12:37:01,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:01,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 79 conjunts are in the unsatisfiable core [2021-05-02 12:37:01,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:01,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:01,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:01,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49140038] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:01,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:01,842 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 77] total 81 [2021-05-02 12:37:01,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654412443] [2021-05-02 12:37:01,842 INFO L460 AbstractCegarLoop]: Interpolant automaton has 81 states [2021-05-02 12:37:01,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:01,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-05-02 12:37:01,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2862, Invalid=3618, Unknown=0, NotChecked=0, Total=6480 [2021-05-02 12:37:01,843 INFO L87 Difference]: Start difference. First operand 375 states and 447 transitions. Second operand has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 78 states have internal predecessors, (166), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:06,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:06,192 INFO L93 Difference]: Finished difference Result 393 states and 467 transitions. [2021-05-02 12:37:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2021-05-02 12:37:06,193 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 78 states have internal predecessors, (166), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 161 [2021-05-02 12:37:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:06,194 INFO L225 Difference]: With dead ends: 393 [2021-05-02 12:37:06,194 INFO L226 Difference]: Without dead ends: 387 [2021-05-02 12:37:06,195 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3501 ImplicationChecksByTransitivity, 5543.9ms TimeCoverageRelationStatistics Valid=8424, Invalid=15756, Unknown=0, NotChecked=0, Total=24180 [2021-05-02 12:37:06,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-05-02 12:37:06,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 380. [2021-05-02 12:37:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 375 states have (on average 1.1973333333333334) internal successors, (449), 375 states have internal predecessors, (449), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:06,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 453 transitions. [2021-05-02 12:37:06,198 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 453 transitions. Word has length 161 [2021-05-02 12:37:06,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:06,198 INFO L480 AbstractCegarLoop]: Abstraction has 380 states and 453 transitions. [2021-05-02 12:37:06,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 81 states, 81 states have (on average 2.049382716049383) internal successors, (166), 78 states have internal predecessors, (166), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:06,199 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 453 transitions. [2021-05-02 12:37:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-05-02 12:37:06,199 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:06,199 INFO L523 BasicCegarLoop]: trace histogram [74, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:06,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,73 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:06,415 INFO L428 AbstractCegarLoop]: === Iteration 75 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:06,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:06,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1419169356, now seen corresponding path program 73 times [2021-05-02 12:37:06,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:06,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183680671] [2021-05-02 12:37:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:08,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:08,595 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:08,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183680671] [2021-05-02 12:37:08,595 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183680671] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:08,595 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [100170554] [2021-05-02 12:37:08,595 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 12:37:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:08,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-02 12:37:08,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:08,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:08,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:09,056 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [100170554] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:09,056 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:09,056 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 78] total 82 [2021-05-02 12:37:09,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56755322] [2021-05-02 12:37:09,057 INFO L460 AbstractCegarLoop]: Interpolant automaton has 82 states [2021-05-02 12:37:09,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:09,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2021-05-02 12:37:09,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2938, Invalid=3704, Unknown=0, NotChecked=0, Total=6642 [2021-05-02 12:37:09,057 INFO L87 Difference]: Start difference. First operand 380 states and 453 transitions. Second operand has 82 states, 82 states have (on average 2.048780487804878) internal successors, (168), 79 states have internal predecessors, (168), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:13,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:13,393 INFO L93 Difference]: Finished difference Result 398 states and 473 transitions. [2021-05-02 12:37:13,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2021-05-02 12:37:13,394 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 2.048780487804878) internal successors, (168), 79 states have internal predecessors, (168), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 163 [2021-05-02 12:37:13,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:13,395 INFO L225 Difference]: With dead ends: 398 [2021-05-02 12:37:13,395 INFO L226 Difference]: Without dead ends: 392 [2021-05-02 12:37:13,396 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3586 ImplicationChecksByTransitivity, 5674.2ms TimeCoverageRelationStatistics Valid=8650, Invalid=16156, Unknown=0, NotChecked=0, Total=24806 [2021-05-02 12:37:13,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-05-02 12:37:13,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 385. [2021-05-02 12:37:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 380 states have (on average 1.1973684210526316) internal successors, (455), 380 states have internal predecessors, (455), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 459 transitions. [2021-05-02 12:37:13,399 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 459 transitions. Word has length 163 [2021-05-02 12:37:13,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:13,399 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 459 transitions. [2021-05-02 12:37:13,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 82 states, 82 states have (on average 2.048780487804878) internal successors, (168), 79 states have internal predecessors, (168), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:13,399 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 459 transitions. [2021-05-02 12:37:13,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-05-02 12:37:13,400 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:13,400 INFO L523 BasicCegarLoop]: trace histogram [75, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:13,600 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:13,600 INFO L428 AbstractCegarLoop]: === Iteration 76 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:13,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:13,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1958622471, now seen corresponding path program 74 times [2021-05-02 12:37:13,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:13,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507368399] [2021-05-02 12:37:13,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:15,833 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:15,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507368399] [2021-05-02 12:37:15,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507368399] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:15,834 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850748767] [2021-05-02 12:37:15,834 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 12:37:15,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:37:15,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:15,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 673 conjuncts, 81 conjunts are in the unsatisfiable core [2021-05-02 12:37:15,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:15,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:15,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:16,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850748767] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:16,292 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:16,292 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 79] total 83 [2021-05-02 12:37:16,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009356484] [2021-05-02 12:37:16,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states [2021-05-02 12:37:16,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:16,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-05-02 12:37:16,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3015, Invalid=3791, Unknown=0, NotChecked=0, Total=6806 [2021-05-02 12:37:16,293 INFO L87 Difference]: Start difference. First operand 385 states and 459 transitions. Second operand has 83 states, 83 states have (on average 2.0481927710843375) internal successors, (170), 80 states have internal predecessors, (170), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:20,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:20,916 INFO L93 Difference]: Finished difference Result 403 states and 479 transitions. [2021-05-02 12:37:20,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2021-05-02 12:37:20,917 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 2.0481927710843375) internal successors, (170), 80 states have internal predecessors, (170), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 165 [2021-05-02 12:37:20,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:20,918 INFO L225 Difference]: With dead ends: 403 [2021-05-02 12:37:20,918 INFO L226 Difference]: Without dead ends: 397 [2021-05-02 12:37:20,919 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3672 ImplicationChecksByTransitivity, 5835.9ms TimeCoverageRelationStatistics Valid=8879, Invalid=16561, Unknown=0, NotChecked=0, Total=25440 [2021-05-02 12:37:20,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-05-02 12:37:20,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 390. [2021-05-02 12:37:20,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 385 states have (on average 1.1974025974025975) internal successors, (461), 385 states have internal predecessors, (461), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:20,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 465 transitions. [2021-05-02 12:37:20,922 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 465 transitions. Word has length 165 [2021-05-02 12:37:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:20,922 INFO L480 AbstractCegarLoop]: Abstraction has 390 states and 465 transitions. [2021-05-02 12:37:20,922 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 83 states, 83 states have (on average 2.0481927710843375) internal successors, (170), 80 states have internal predecessors, (170), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:20,922 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 465 transitions. [2021-05-02 12:37:20,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-05-02 12:37:20,922 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:20,923 INFO L523 BasicCegarLoop]: trace histogram [76, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:21,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-05-02 12:37:21,123 INFO L428 AbstractCegarLoop]: === Iteration 77 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:21,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:21,123 INFO L82 PathProgramCache]: Analyzing trace with hash 682023170, now seen corresponding path program 75 times [2021-05-02 12:37:21,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:21,124 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075683138] [2021-05-02 12:37:21,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:23,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:23,423 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:23,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:23,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075683138] [2021-05-02 12:37:23,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075683138] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:23,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882312380] [2021-05-02 12:37:23,423 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 12:37:23,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s) [2021-05-02 12:37:23,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:23,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 12:37:23,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:23,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:23,959 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:23,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882312380] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:23,959 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:23,959 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 80] total 84 [2021-05-02 12:37:23,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065602244] [2021-05-02 12:37:23,959 INFO L460 AbstractCegarLoop]: Interpolant automaton has 84 states [2021-05-02 12:37:23,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:23,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-05-02 12:37:23,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3093, Invalid=3879, Unknown=0, NotChecked=0, Total=6972 [2021-05-02 12:37:23,960 INFO L87 Difference]: Start difference. First operand 390 states and 465 transitions. Second operand has 84 states, 84 states have (on average 2.0476190476190474) internal successors, (172), 81 states have internal predecessors, (172), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:28,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:28,711 INFO L93 Difference]: Finished difference Result 408 states and 485 transitions. [2021-05-02 12:37:28,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2021-05-02 12:37:28,712 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 2.0476190476190474) internal successors, (172), 81 states have internal predecessors, (172), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 167 [2021-05-02 12:37:28,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:28,713 INFO L225 Difference]: With dead ends: 408 [2021-05-02 12:37:28,713 INFO L226 Difference]: Without dead ends: 402 [2021-05-02 12:37:28,714 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3759 ImplicationChecksByTransitivity, 5971.7ms TimeCoverageRelationStatistics Valid=9111, Invalid=16971, Unknown=0, NotChecked=0, Total=26082 [2021-05-02 12:37:28,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-05-02 12:37:28,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 395. [2021-05-02 12:37:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 390 states have (on average 1.1974358974358974) internal successors, (467), 390 states have internal predecessors, (467), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:28,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 471 transitions. [2021-05-02 12:37:28,717 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 471 transitions. Word has length 167 [2021-05-02 12:37:28,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:28,717 INFO L480 AbstractCegarLoop]: Abstraction has 395 states and 471 transitions. [2021-05-02 12:37:28,717 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 84 states, 84 states have (on average 2.0476190476190474) internal successors, (172), 81 states have internal predecessors, (172), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:28,717 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 471 transitions. [2021-05-02 12:37:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-05-02 12:37:28,717 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:28,718 INFO L523 BasicCegarLoop]: trace histogram [77, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:28,918 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76,76 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:28,918 INFO L428 AbstractCegarLoop]: === Iteration 78 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:28,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:28,918 INFO L82 PathProgramCache]: Analyzing trace with hash -2064225731, now seen corresponding path program 76 times [2021-05-02 12:37:28,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:28,918 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112902838] [2021-05-02 12:37:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:31,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:31,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:31,270 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:31,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112902838] [2021-05-02 12:37:31,270 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112902838] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:31,270 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195164194] [2021-05-02 12:37:31,270 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 12:37:31,363 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:37:31,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:31,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-02 12:37:31,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:31,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:31,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:31,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195164194] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:31,757 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:31,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 81] total 85 [2021-05-02 12:37:31,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595199721] [2021-05-02 12:37:31,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 85 states [2021-05-02 12:37:31,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:31,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-05-02 12:37:31,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3172, Invalid=3968, Unknown=0, NotChecked=0, Total=7140 [2021-05-02 12:37:31,758 INFO L87 Difference]: Start difference. First operand 395 states and 471 transitions. Second operand has 85 states, 85 states have (on average 2.0470588235294116) internal successors, (174), 82 states have internal predecessors, (174), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:36,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:36,544 INFO L93 Difference]: Finished difference Result 413 states and 491 transitions. [2021-05-02 12:37:36,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-02 12:37:36,545 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 2.0470588235294116) internal successors, (174), 82 states have internal predecessors, (174), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 169 [2021-05-02 12:37:36,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:36,546 INFO L225 Difference]: With dead ends: 413 [2021-05-02 12:37:36,546 INFO L226 Difference]: Without dead ends: 407 [2021-05-02 12:37:36,547 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3847 ImplicationChecksByTransitivity, 6158.4ms TimeCoverageRelationStatistics Valid=9346, Invalid=17386, Unknown=0, NotChecked=0, Total=26732 [2021-05-02 12:37:36,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-05-02 12:37:36,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 400. [2021-05-02 12:37:36,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 395 states have (on average 1.1974683544303797) internal successors, (473), 395 states have internal predecessors, (473), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 477 transitions. [2021-05-02 12:37:36,550 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 477 transitions. Word has length 169 [2021-05-02 12:37:36,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:36,550 INFO L480 AbstractCegarLoop]: Abstraction has 400 states and 477 transitions. [2021-05-02 12:37:36,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 85 states, 85 states have (on average 2.0470588235294116) internal successors, (174), 82 states have internal predecessors, (174), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:36,550 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 477 transitions. [2021-05-02 12:37:36,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-05-02 12:37:36,551 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:36,551 INFO L523 BasicCegarLoop]: trace histogram [78, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:36,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:37:36,752 INFO L428 AbstractCegarLoop]: === Iteration 79 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:36,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:36,752 INFO L82 PathProgramCache]: Analyzing trace with hash 195467448, now seen corresponding path program 77 times [2021-05-02 12:37:36,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:36,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108816350] [2021-05-02 12:37:36,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:36,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:39,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:39,212 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:39,212 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:39,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108816350] [2021-05-02 12:37:39,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108816350] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:39,212 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398955995] [2021-05-02 12:37:39,212 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 12:37:39,360 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s) [2021-05-02 12:37:39,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:39,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 84 conjunts are in the unsatisfiable core [2021-05-02 12:37:39,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:39,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:39,745 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:39,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398955995] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:39,745 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:39,745 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 82] total 86 [2021-05-02 12:37:39,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143623466] [2021-05-02 12:37:39,746 INFO L460 AbstractCegarLoop]: Interpolant automaton has 86 states [2021-05-02 12:37:39,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:39,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-05-02 12:37:39,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3252, Invalid=4058, Unknown=0, NotChecked=0, Total=7310 [2021-05-02 12:37:39,747 INFO L87 Difference]: Start difference. First operand 400 states and 477 transitions. Second operand has 86 states, 86 states have (on average 2.046511627906977) internal successors, (176), 83 states have internal predecessors, (176), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:44,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:44,687 INFO L93 Difference]: Finished difference Result 418 states and 497 transitions. [2021-05-02 12:37:44,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2021-05-02 12:37:44,688 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 2.046511627906977) internal successors, (176), 83 states have internal predecessors, (176), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 171 [2021-05-02 12:37:44,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:44,689 INFO L225 Difference]: With dead ends: 418 [2021-05-02 12:37:44,689 INFO L226 Difference]: Without dead ends: 412 [2021-05-02 12:37:44,690 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3936 ImplicationChecksByTransitivity, 6376.3ms TimeCoverageRelationStatistics Valid=9584, Invalid=17806, Unknown=0, NotChecked=0, Total=27390 [2021-05-02 12:37:44,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-05-02 12:37:44,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 405. [2021-05-02 12:37:44,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 400 states have (on average 1.1975) internal successors, (479), 400 states have internal predecessors, (479), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 483 transitions. [2021-05-02 12:37:44,694 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 483 transitions. Word has length 171 [2021-05-02 12:37:44,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:44,694 INFO L480 AbstractCegarLoop]: Abstraction has 405 states and 483 transitions. [2021-05-02 12:37:44,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 86 states, 86 states have (on average 2.046511627906977) internal successors, (176), 83 states have internal predecessors, (176), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:44,694 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 483 transitions. [2021-05-02 12:37:44,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-05-02 12:37:44,695 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:44,695 INFO L523 BasicCegarLoop]: trace histogram [79, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:44,908 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-05-02 12:37:44,909 INFO L428 AbstractCegarLoop]: === Iteration 80 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:44,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:44,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1492839309, now seen corresponding path program 78 times [2021-05-02 12:37:44,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:44,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688423051] [2021-05-02 12:37:44,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:47,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:47,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:47,461 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:47,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688423051] [2021-05-02 12:37:47,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688423051] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:47,462 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445500495] [2021-05-02 12:37:47,462 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 12:37:47,644 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s) [2021-05-02 12:37:47,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:37:47,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 85 conjunts are in the unsatisfiable core [2021-05-02 12:37:47,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:47,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:47,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:48,059 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445500495] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:48,059 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:48,059 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 83] total 87 [2021-05-02 12:37:48,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592334845] [2021-05-02 12:37:48,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 87 states [2021-05-02 12:37:48,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:48,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2021-05-02 12:37:48,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3333, Invalid=4149, Unknown=0, NotChecked=0, Total=7482 [2021-05-02 12:37:48,060 INFO L87 Difference]: Start difference. First operand 405 states and 483 transitions. Second operand has 87 states, 87 states have (on average 2.045977011494253) internal successors, (178), 84 states have internal predecessors, (178), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:53,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:37:53,211 INFO L93 Difference]: Finished difference Result 423 states and 503 transitions. [2021-05-02 12:37:53,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-05-02 12:37:53,212 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 87 states have (on average 2.045977011494253) internal successors, (178), 84 states have internal predecessors, (178), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 173 [2021-05-02 12:37:53,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:37:53,213 INFO L225 Difference]: With dead ends: 423 [2021-05-02 12:37:53,213 INFO L226 Difference]: Without dead ends: 417 [2021-05-02 12:37:53,214 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4026 ImplicationChecksByTransitivity, 6597.8ms TimeCoverageRelationStatistics Valid=9825, Invalid=18231, Unknown=0, NotChecked=0, Total=28056 [2021-05-02 12:37:53,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-05-02 12:37:53,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 410. [2021-05-02 12:37:53,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 405 states have (on average 1.1975308641975309) internal successors, (485), 405 states have internal predecessors, (485), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 489 transitions. [2021-05-02 12:37:53,217 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 489 transitions. Word has length 173 [2021-05-02 12:37:53,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:37:53,217 INFO L480 AbstractCegarLoop]: Abstraction has 410 states and 489 transitions. [2021-05-02 12:37:53,217 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 87 states, 87 states have (on average 2.045977011494253) internal successors, (178), 84 states have internal predecessors, (178), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:37:53,218 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 489 transitions. [2021-05-02 12:37:53,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-05-02 12:37:53,218 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:37:53,218 INFO L523 BasicCegarLoop]: trace histogram [80, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:37:53,436 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2021-05-02 12:37:53,437 INFO L428 AbstractCegarLoop]: === Iteration 81 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:37:53,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:37:53,437 INFO L82 PathProgramCache]: Analyzing trace with hash -457994898, now seen corresponding path program 79 times [2021-05-02 12:37:53,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:37:53,437 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498826492] [2021-05-02 12:37:53,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:37:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:56,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:37:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:56,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:56,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:37:56,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498826492] [2021-05-02 12:37:56,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498826492] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:56,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284557739] [2021-05-02 12:37:56,065 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 12:37:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:37:56,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 713 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-02 12:37:56,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:37:56,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:37:56,588 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:37:56,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284557739] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:37:56,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:37:56,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [85, 84] total 88 [2021-05-02 12:37:56,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188096038] [2021-05-02 12:37:56,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 88 states [2021-05-02 12:37:56,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:37:56,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2021-05-02 12:37:56,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3415, Invalid=4241, Unknown=0, NotChecked=0, Total=7656 [2021-05-02 12:37:56,590 INFO L87 Difference]: Start difference. First operand 410 states and 489 transitions. Second operand has 88 states, 88 states have (on average 2.0454545454545454) internal successors, (180), 85 states have internal predecessors, (180), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:02,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:02,047 INFO L93 Difference]: Finished difference Result 428 states and 509 transitions. [2021-05-02 12:38:02,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2021-05-02 12:38:02,048 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 2.0454545454545454) internal successors, (180), 85 states have internal predecessors, (180), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 175 [2021-05-02 12:38:02,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:02,049 INFO L225 Difference]: With dead ends: 428 [2021-05-02 12:38:02,049 INFO L226 Difference]: Without dead ends: 422 [2021-05-02 12:38:02,050 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4117 ImplicationChecksByTransitivity, 6924.6ms TimeCoverageRelationStatistics Valid=10069, Invalid=18661, Unknown=0, NotChecked=0, Total=28730 [2021-05-02 12:38:02,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-05-02 12:38:02,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 415. [2021-05-02 12:38:02,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 410 states have (on average 1.197560975609756) internal successors, (491), 410 states have internal predecessors, (491), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:02,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 495 transitions. [2021-05-02 12:38:02,053 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 495 transitions. Word has length 175 [2021-05-02 12:38:02,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:02,054 INFO L480 AbstractCegarLoop]: Abstraction has 415 states and 495 transitions. [2021-05-02 12:38:02,054 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 88 states, 88 states have (on average 2.0454545454545454) internal successors, (180), 85 states have internal predecessors, (180), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:02,054 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 495 transitions. [2021-05-02 12:38:02,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-05-02 12:38:02,054 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:02,055 INFO L523 BasicCegarLoop]: trace histogram [81, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:02,255 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:02,255 INFO L428 AbstractCegarLoop]: === Iteration 82 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:02,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:02,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1890038697, now seen corresponding path program 80 times [2021-05-02 12:38:02,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:02,256 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588131550] [2021-05-02 12:38:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:05,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:05,029 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:05,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588131550] [2021-05-02 12:38:05,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588131550] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:05,029 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345381440] [2021-05-02 12:38:05,029 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 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 12:38:05,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:38:05,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:05,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 721 conjuncts, 87 conjunts are in the unsatisfiable core [2021-05-02 12:38:05,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:05,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:05,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:05,568 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345381440] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:05,568 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:05,568 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [86, 85] total 89 [2021-05-02 12:38:05,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989924013] [2021-05-02 12:38:05,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 89 states [2021-05-02 12:38:05,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:05,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-05-02 12:38:05,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3498, Invalid=4334, Unknown=0, NotChecked=0, Total=7832 [2021-05-02 12:38:05,570 INFO L87 Difference]: Start difference. First operand 415 states and 495 transitions. Second operand has 89 states, 89 states have (on average 2.044943820224719) internal successors, (182), 86 states have internal predecessors, (182), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:11,018 INFO L93 Difference]: Finished difference Result 433 states and 515 transitions. [2021-05-02 12:38:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2021-05-02 12:38:11,018 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 2.044943820224719) internal successors, (182), 86 states have internal predecessors, (182), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 177 [2021-05-02 12:38:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:11,019 INFO L225 Difference]: With dead ends: 433 [2021-05-02 12:38:11,019 INFO L226 Difference]: Without dead ends: 427 [2021-05-02 12:38:11,021 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4209 ImplicationChecksByTransitivity, 7114.6ms TimeCoverageRelationStatistics Valid=10316, Invalid=19096, Unknown=0, NotChecked=0, Total=29412 [2021-05-02 12:38:11,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-05-02 12:38:11,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 420. [2021-05-02 12:38:11,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 415 states have (on average 1.1975903614457832) internal successors, (497), 415 states have internal predecessors, (497), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:11,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 501 transitions. [2021-05-02 12:38:11,024 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 501 transitions. Word has length 177 [2021-05-02 12:38:11,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:11,024 INFO L480 AbstractCegarLoop]: Abstraction has 420 states and 501 transitions. [2021-05-02 12:38:11,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 89 states, 89 states have (on average 2.044943820224719) internal successors, (182), 86 states have internal predecessors, (182), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:11,024 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 501 transitions. [2021-05-02 12:38:11,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-05-02 12:38:11,025 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:11,025 INFO L523 BasicCegarLoop]: trace histogram [82, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:11,225 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:11,226 INFO L428 AbstractCegarLoop]: === Iteration 83 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:11,226 INFO L82 PathProgramCache]: Analyzing trace with hash -802474204, now seen corresponding path program 81 times [2021-05-02 12:38:11,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:11,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137178696] [2021-05-02 12:38:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:14,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:14,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:14,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137178696] [2021-05-02 12:38:14,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137178696] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:14,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617444963] [2021-05-02 12:38:14,123 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 12:38:14,314 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s) [2021-05-02 12:38:14,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:14,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-02 12:38:14,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:14,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:14,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617444963] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:14,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:14,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [87, 87] total 91 [2021-05-02 12:38:14,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878202148] [2021-05-02 12:38:14,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 12:38:14,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:14,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 12:38:14,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3584, Invalid=4606, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 12:38:14,984 INFO L87 Difference]: Start difference. First operand 420 states and 501 transitions. Second operand has 91 states, 91 states have (on average 2.032967032967033) internal successors, (185), 88 states have internal predecessors, (185), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:38:22,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:22,070 INFO L93 Difference]: Finished difference Result 438 states and 521 transitions. [2021-05-02 12:38:22,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 12:38:22,071 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.032967032967033) internal successors, (185), 88 states have internal predecessors, (185), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 179 [2021-05-02 12:38:22,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:22,072 INFO L225 Difference]: With dead ends: 438 [2021-05-02 12:38:22,072 INFO L226 Difference]: Without dead ends: 432 [2021-05-02 12:38:22,074 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4386 ImplicationChecksByTransitivity, 8717.2ms TimeCoverageRelationStatistics Valid=10740, Invalid=20060, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 12:38:22,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-05-02 12:38:22,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 425. [2021-05-02 12:38:22,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 420 states have (on average 1.1976190476190476) internal successors, (503), 420 states have internal predecessors, (503), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 507 transitions. [2021-05-02 12:38:22,077 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 507 transitions. Word has length 179 [2021-05-02 12:38:22,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:22,078 INFO L480 AbstractCegarLoop]: Abstraction has 425 states and 507 transitions. [2021-05-02 12:38:22,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.032967032967033) internal successors, (185), 88 states have internal predecessors, (185), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:38:22,078 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 507 transitions. [2021-05-02 12:38:22,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-05-02 12:38:22,078 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:22,079 INFO L523 BasicCegarLoop]: trace histogram [83, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:22,279 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:22,279 INFO L428 AbstractCegarLoop]: === Iteration 84 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:22,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:22,280 INFO L82 PathProgramCache]: Analyzing trace with hash 1557907423, now seen corresponding path program 82 times [2021-05-02 12:38:22,280 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:22,280 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496548423] [2021-05-02 12:38:22,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:25,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:25,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:25,322 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:25,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:25,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496548423] [2021-05-02 12:38:25,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496548423] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:25,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008634289] [2021-05-02 12:38:25,323 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 12:38:25,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:38:25,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:25,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 737 conjuncts, 86 conjunts are in the unsatisfiable core [2021-05-02 12:38:25,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:25,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:25,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:25,951 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008634289] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:25,951 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:25,951 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [88, 87] total 91 [2021-05-02 12:38:25,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837062546] [2021-05-02 12:38:25,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 91 states [2021-05-02 12:38:25,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:25,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-05-02 12:38:25,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3667, Invalid=4523, Unknown=0, NotChecked=0, Total=8190 [2021-05-02 12:38:25,953 INFO L87 Difference]: Start difference. First operand 425 states and 507 transitions. Second operand has 91 states, 91 states have (on average 2.043956043956044) internal successors, (186), 88 states have internal predecessors, (186), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:32,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:32,044 INFO L93 Difference]: Finished difference Result 443 states and 527 transitions. [2021-05-02 12:38:32,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-02 12:38:32,044 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 2.043956043956044) internal successors, (186), 88 states have internal predecessors, (186), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 181 [2021-05-02 12:38:32,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:32,045 INFO L225 Difference]: With dead ends: 443 [2021-05-02 12:38:32,046 INFO L226 Difference]: Without dead ends: 437 [2021-05-02 12:38:32,047 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4396 ImplicationChecksByTransitivity, 7805.4ms TimeCoverageRelationStatistics Valid=10819, Invalid=19981, Unknown=0, NotChecked=0, Total=30800 [2021-05-02 12:38:32,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-05-02 12:38:32,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 430. [2021-05-02 12:38:32,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 425 states have (on average 1.1976470588235295) internal successors, (509), 425 states have internal predecessors, (509), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:32,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 513 transitions. [2021-05-02 12:38:32,050 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 513 transitions. Word has length 181 [2021-05-02 12:38:32,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:32,050 INFO L480 AbstractCegarLoop]: Abstraction has 430 states and 513 transitions. [2021-05-02 12:38:32,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 91 states, 91 states have (on average 2.043956043956044) internal successors, (186), 88 states have internal predecessors, (186), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:32,051 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 513 transitions. [2021-05-02 12:38:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-05-02 12:38:32,051 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:32,051 INFO L523 BasicCegarLoop]: trace histogram [84, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:32,252 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,83 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:32,252 INFO L428 AbstractCegarLoop]: === Iteration 85 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:32,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:32,252 INFO L82 PathProgramCache]: Analyzing trace with hash 2141918682, now seen corresponding path program 83 times [2021-05-02 12:38:32,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:32,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372456122] [2021-05-02 12:38:32,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:32,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:35,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:35,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:35,351 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:35,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372456122] [2021-05-02 12:38:35,351 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372456122] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:35,351 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917956439] [2021-05-02 12:38:35,351 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 12:38:35,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2021-05-02 12:38:35,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:35,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 90 conjunts are in the unsatisfiable core [2021-05-02 12:38:35,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:35,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:35,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:35,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917956439] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:35,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:35,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [89, 88] total 92 [2021-05-02 12:38:35,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4834448] [2021-05-02 12:38:35,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 92 states [2021-05-02 12:38:35,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:35,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2021-05-02 12:38:35,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3753, Invalid=4619, Unknown=0, NotChecked=0, Total=8372 [2021-05-02 12:38:35,980 INFO L87 Difference]: Start difference. First operand 430 states and 513 transitions. Second operand has 92 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 89 states have internal predecessors, (188), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:42,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:42,216 INFO L93 Difference]: Finished difference Result 448 states and 533 transitions. [2021-05-02 12:38:42,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-05-02 12:38:42,216 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 89 states have internal predecessors, (188), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 183 [2021-05-02 12:38:42,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:42,217 INFO L225 Difference]: With dead ends: 448 [2021-05-02 12:38:42,217 INFO L226 Difference]: Without dead ends: 442 [2021-05-02 12:38:42,219 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4491 ImplicationChecksByTransitivity, 8048.9ms TimeCoverageRelationStatistics Valid=11075, Invalid=20431, Unknown=0, NotChecked=0, Total=31506 [2021-05-02 12:38:42,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-05-02 12:38:42,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 435. [2021-05-02 12:38:42,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 430 states have (on average 1.197674418604651) internal successors, (515), 430 states have internal predecessors, (515), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:42,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 519 transitions. [2021-05-02 12:38:42,223 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 519 transitions. Word has length 183 [2021-05-02 12:38:42,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:42,223 INFO L480 AbstractCegarLoop]: Abstraction has 435 states and 519 transitions. [2021-05-02 12:38:42,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 92 states, 92 states have (on average 2.0434782608695654) internal successors, (188), 89 states have internal predecessors, (188), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 519 transitions. [2021-05-02 12:38:42,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-05-02 12:38:42,224 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:42,224 INFO L523 BasicCegarLoop]: trace histogram [85, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:42,442 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:38:42,442 INFO L428 AbstractCegarLoop]: === Iteration 86 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:42,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:42,443 INFO L82 PathProgramCache]: Analyzing trace with hash 736022805, now seen corresponding path program 84 times [2021-05-02 12:38:42,443 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:42,443 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738669676] [2021-05-02 12:38:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:45,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:45,698 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:45,699 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:45,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738669676] [2021-05-02 12:38:45,699 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738669676] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:45,699 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321034453] [2021-05-02 12:38:45,699 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 12:38:45,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 85 check-sat command(s) [2021-05-02 12:38:45,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:38:45,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 12:38:45,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:45,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:45,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:46,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7140 backedges. 0 proven. 7140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:46,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321034453] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:46,366 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:46,366 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [90, 89] total 93 [2021-05-02 12:38:46,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806800438] [2021-05-02 12:38:46,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 93 states [2021-05-02 12:38:46,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:46,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-05-02 12:38:46,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3840, Invalid=4716, Unknown=0, NotChecked=0, Total=8556 [2021-05-02 12:38:46,368 INFO L87 Difference]: Start difference. First operand 435 states and 519 transitions. Second operand has 93 states, 93 states have (on average 2.043010752688172) internal successors, (190), 90 states have internal predecessors, (190), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:52,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:38:52,599 INFO L93 Difference]: Finished difference Result 453 states and 539 transitions. [2021-05-02 12:38:52,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2021-05-02 12:38:52,599 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.043010752688172) internal successors, (190), 90 states have internal predecessors, (190), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 185 [2021-05-02 12:38:52,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:38:52,601 INFO L225 Difference]: With dead ends: 453 [2021-05-02 12:38:52,601 INFO L226 Difference]: Without dead ends: 447 [2021-05-02 12:38:52,604 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4587 ImplicationChecksByTransitivity, 8145.5ms TimeCoverageRelationStatistics Valid=11334, Invalid=20886, Unknown=0, NotChecked=0, Total=32220 [2021-05-02 12:38:52,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-05-02 12:38:52,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 440. [2021-05-02 12:38:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 435 states have (on average 1.1977011494252874) internal successors, (521), 435 states have internal predecessors, (521), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:52,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 525 transitions. [2021-05-02 12:38:52,608 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 525 transitions. Word has length 185 [2021-05-02 12:38:52,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:38:52,608 INFO L480 AbstractCegarLoop]: Abstraction has 440 states and 525 transitions. [2021-05-02 12:38:52,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 93 states, 93 states have (on average 2.043010752688172) internal successors, (190), 90 states have internal predecessors, (190), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:38:52,609 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 525 transitions. [2021-05-02 12:38:52,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-05-02 12:38:52,609 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:38:52,609 INFO L523 BasicCegarLoop]: trace histogram [86, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:38:52,810 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2021-05-02 12:38:52,810 INFO L428 AbstractCegarLoop]: === Iteration 87 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:38:52,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:38:52,811 INFO L82 PathProgramCache]: Analyzing trace with hash -1710184048, now seen corresponding path program 85 times [2021-05-02 12:38:52,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:38:52,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257379148] [2021-05-02 12:38:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:38:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:56,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:38:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:56,150 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:56,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:38:56,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257379148] [2021-05-02 12:38:56,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257379148] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:56,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951450749] [2021-05-02 12:38:56,150 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 12:38:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:38:56,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 761 conjuncts, 92 conjunts are in the unsatisfiable core [2021-05-02 12:38:56,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:38:56,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,321 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 12:38:56,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,365 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 12:38:56,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,398 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 12:38:56,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,419 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 12:38:56,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,441 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 12:38:56,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,486 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 12:38:56,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,537 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 12:38:56,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:38:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 7310 backedges. 0 proven. 7310 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:38:56,910 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951450749] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:38:56,910 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:38:56,910 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [91, 90] total 94 [2021-05-02 12:38:56,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760986783] [2021-05-02 12:38:56,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 94 states [2021-05-02 12:38:56,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:38:56,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-05-02 12:38:56,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3928, Invalid=4814, Unknown=0, NotChecked=0, Total=8742 [2021-05-02 12:38:56,912 INFO L87 Difference]: Start difference. First operand 440 states and 525 transitions. Second operand has 94 states, 94 states have (on average 2.0425531914893615) internal successors, (192), 91 states have internal predecessors, (192), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:39:03,384 INFO L93 Difference]: Finished difference Result 458 states and 545 transitions. [2021-05-02 12:39:03,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-05-02 12:39:03,385 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.0425531914893615) internal successors, (192), 91 states have internal predecessors, (192), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 187 [2021-05-02 12:39:03,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:39:03,386 INFO L225 Difference]: With dead ends: 458 [2021-05-02 12:39:03,386 INFO L226 Difference]: Without dead ends: 452 [2021-05-02 12:39:03,388 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4684 ImplicationChecksByTransitivity, 8445.1ms TimeCoverageRelationStatistics Valid=11596, Invalid=21346, Unknown=0, NotChecked=0, Total=32942 [2021-05-02 12:39:03,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2021-05-02 12:39:03,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 445. [2021-05-02 12:39:03,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 440 states have (on average 1.1977272727272728) internal successors, (527), 440 states have internal predecessors, (527), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:03,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 531 transitions. [2021-05-02 12:39:03,391 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 531 transitions. Word has length 187 [2021-05-02 12:39:03,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:39:03,391 INFO L480 AbstractCegarLoop]: Abstraction has 445 states and 531 transitions. [2021-05-02 12:39:03,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 94 states, 94 states have (on average 2.0425531914893615) internal successors, (192), 91 states have internal predecessors, (192), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:03,392 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 531 transitions. [2021-05-02 12:39:03,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-05-02 12:39:03,392 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:39:03,392 INFO L523 BasicCegarLoop]: trace histogram [87, 86, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:39:03,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:03,593 INFO L428 AbstractCegarLoop]: === Iteration 88 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:39:03,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:39:03,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1127108427, now seen corresponding path program 86 times [2021-05-02 12:39:03,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:39:03,594 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024528507] [2021-05-02 12:39:03,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:39:03,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:06,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:39:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:06,787 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:06,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:39:06,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024528507] [2021-05-02 12:39:06,787 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024528507] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:06,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165686711] [2021-05-02 12:39:06,788 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 12:39:06,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:39:06,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:39:06,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 12:39:06,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:39:06,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:06,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:07,399 INFO L134 CoverageAnalysis]: Checked inductivity of 7482 backedges. 0 proven. 7482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:07,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165686711] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:07,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:39:07,399 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [92, 91] total 95 [2021-05-02 12:39:07,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170109608] [2021-05-02 12:39:07,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 95 states [2021-05-02 12:39:07,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:39:07,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-05-02 12:39:07,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4017, Invalid=4913, Unknown=0, NotChecked=0, Total=8930 [2021-05-02 12:39:07,401 INFO L87 Difference]: Start difference. First operand 445 states and 531 transitions. Second operand has 95 states, 95 states have (on average 2.042105263157895) internal successors, (194), 92 states have internal predecessors, (194), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:13,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:39:13,891 INFO L93 Difference]: Finished difference Result 463 states and 551 transitions. [2021-05-02 12:39:13,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2021-05-02 12:39:13,892 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.042105263157895) internal successors, (194), 92 states have internal predecessors, (194), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 189 [2021-05-02 12:39:13,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:39:13,893 INFO L225 Difference]: With dead ends: 463 [2021-05-02 12:39:13,893 INFO L226 Difference]: Without dead ends: 457 [2021-05-02 12:39:13,895 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 182 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4782 ImplicationChecksByTransitivity, 8347.3ms TimeCoverageRelationStatistics Valid=11861, Invalid=21811, Unknown=0, NotChecked=0, Total=33672 [2021-05-02 12:39:13,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-05-02 12:39:13,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 450. [2021-05-02 12:39:13,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 445 states have (on average 1.1977528089887641) internal successors, (533), 445 states have internal predecessors, (533), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 537 transitions. [2021-05-02 12:39:13,898 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 537 transitions. Word has length 189 [2021-05-02 12:39:13,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:39:13,899 INFO L480 AbstractCegarLoop]: Abstraction has 450 states and 537 transitions. [2021-05-02 12:39:13,899 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 95 states, 95 states have (on average 2.042105263157895) internal successors, (194), 92 states have internal predecessors, (194), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 537 transitions. [2021-05-02 12:39:13,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-05-02 12:39:13,900 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:39:13,900 INFO L523 BasicCegarLoop]: trace histogram [88, 87, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:39:14,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable87 [2021-05-02 12:39:14,109 INFO L428 AbstractCegarLoop]: === Iteration 89 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:39:14,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:39:14,109 INFO L82 PathProgramCache]: Analyzing trace with hash 460943942, now seen corresponding path program 87 times [2021-05-02 12:39:14,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:39:14,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871324146] [2021-05-02 12:39:14,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:39:14,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:17,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:39:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:17,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:17,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:39:17,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871324146] [2021-05-02 12:39:17,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871324146] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:17,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808591182] [2021-05-02 12:39:17,758 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 12:39:17,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 88 check-sat command(s) [2021-05-02 12:39:17,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:39:17,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 777 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-02 12:39:17,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:39:17,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:17,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:17,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:17,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 7656 backedges. 0 proven. 7656 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:18,650 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808591182] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:18,650 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:39:18,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [93, 93] total 97 [2021-05-02 12:39:18,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138408232] [2021-05-02 12:39:18,651 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 12:39:18,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:39:18,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 12:39:18,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4109, Invalid=5203, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 12:39:18,652 INFO L87 Difference]: Start difference. First operand 450 states and 537 transitions. Second operand has 97 states, 97 states have (on average 2.0309278350515463) internal successors, (197), 94 states have internal predecessors, (197), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:39:27,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:39:27,180 INFO L93 Difference]: Finished difference Result 468 states and 557 transitions. [2021-05-02 12:39:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 12:39:27,181 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0309278350515463) internal successors, (197), 94 states have internal predecessors, (197), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 191 [2021-05-02 12:39:27,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:39:27,182 INFO L225 Difference]: With dead ends: 468 [2021-05-02 12:39:27,182 INFO L226 Difference]: Without dead ends: 462 [2021-05-02 12:39:27,183 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4971 ImplicationChecksByTransitivity, 10525.0ms TimeCoverageRelationStatistics Valid=12315, Invalid=22841, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 12:39:27,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-05-02 12:39:27,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 455. [2021-05-02 12:39:27,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 450 states have (on average 1.1977777777777778) internal successors, (539), 450 states have internal predecessors, (539), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 543 transitions. [2021-05-02 12:39:27,187 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 543 transitions. Word has length 191 [2021-05-02 12:39:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:39:27,187 INFO L480 AbstractCegarLoop]: Abstraction has 455 states and 543 transitions. [2021-05-02 12:39:27,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.0309278350515463) internal successors, (197), 94 states have internal predecessors, (197), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:39:27,187 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 543 transitions. [2021-05-02 12:39:27,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-05-02 12:39:27,188 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:39:27,188 INFO L523 BasicCegarLoop]: trace histogram [89, 88, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:39:27,392 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable88 [2021-05-02 12:39:27,392 INFO L428 AbstractCegarLoop]: === Iteration 90 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:39:27,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:39:27,393 INFO L82 PathProgramCache]: Analyzing trace with hash 227000961, now seen corresponding path program 88 times [2021-05-02 12:39:27,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:39:27,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250666180] [2021-05-02 12:39:27,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:39:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:31,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:39:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:31,238 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:31,238 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:39:31,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250666180] [2021-05-02 12:39:31,238 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250666180] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:31,238 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39687019] [2021-05-02 12:39:31,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:39:31,346 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:39:31,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:39:31,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 785 conjuncts, 92 conjunts are in the unsatisfiable core [2021-05-02 12:39:31,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:39:31,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 7832 backedges. 0 proven. 7832 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:31,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39687019] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:31,908 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:39:31,908 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [94, 93] total 97 [2021-05-02 12:39:31,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278067408] [2021-05-02 12:39:31,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 97 states [2021-05-02 12:39:31,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:39:31,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-05-02 12:39:31,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4198, Invalid=5114, Unknown=0, NotChecked=0, Total=9312 [2021-05-02 12:39:31,910 INFO L87 Difference]: Start difference. First operand 455 states and 543 transitions. Second operand has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 94 states have internal predecessors, (198), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:39,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:39:39,724 INFO L93 Difference]: Finished difference Result 473 states and 563 transitions. [2021-05-02 12:39:39,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-05-02 12:39:39,726 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 94 states have internal predecessors, (198), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 193 [2021-05-02 12:39:39,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:39:39,727 INFO L225 Difference]: With dead ends: 473 [2021-05-02 12:39:39,727 INFO L226 Difference]: Without dead ends: 467 [2021-05-02 12:39:39,728 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4981 ImplicationChecksByTransitivity, 9982.5ms TimeCoverageRelationStatistics Valid=12400, Invalid=22756, Unknown=0, NotChecked=0, Total=35156 [2021-05-02 12:39:39,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-05-02 12:39:39,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 460. [2021-05-02 12:39:39,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 455 states have (on average 1.1978021978021978) internal successors, (545), 455 states have internal predecessors, (545), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:39,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 549 transitions. [2021-05-02 12:39:39,732 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 549 transitions. Word has length 193 [2021-05-02 12:39:39,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:39:39,732 INFO L480 AbstractCegarLoop]: Abstraction has 460 states and 549 transitions. [2021-05-02 12:39:39,732 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 97 states, 97 states have (on average 2.0412371134020617) internal successors, (198), 94 states have internal predecessors, (198), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:39,732 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 549 transitions. [2021-05-02 12:39:39,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-05-02 12:39:39,733 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:39:39,733 INFO L523 BasicCegarLoop]: trace histogram [90, 89, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:39:39,935 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:39,935 INFO L428 AbstractCegarLoop]: === Iteration 91 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:39:39,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:39:39,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1253904388, now seen corresponding path program 89 times [2021-05-02 12:39:39,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:39:39,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986200527] [2021-05-02 12:39:39,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:39:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:43,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:39:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:43,970 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:43,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:39:43,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986200527] [2021-05-02 12:39:43,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986200527] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:43,970 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21107703] [2021-05-02 12:39:43,970 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 12:39:44,148 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 90 check-sat command(s) [2021-05-02 12:39:44,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:39:44,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 93 conjunts are in the unsatisfiable core [2021-05-02 12:39:44,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:39:44,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 8010 backedges. 0 proven. 8010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:44,755 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21107703] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:44,755 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:39:44,755 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 94] total 98 [2021-05-02 12:39:44,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759051548] [2021-05-02 12:39:44,755 INFO L460 AbstractCegarLoop]: Interpolant automaton has 98 states [2021-05-02 12:39:44,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:39:44,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-05-02 12:39:44,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4290, Invalid=5216, Unknown=0, NotChecked=0, Total=9506 [2021-05-02 12:39:44,756 INFO L87 Difference]: Start difference. First operand 460 states and 549 transitions. Second operand has 98 states, 98 states have (on average 2.0408163265306123) internal successors, (200), 95 states have internal predecessors, (200), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:52,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:39:52,515 INFO L93 Difference]: Finished difference Result 478 states and 569 transitions. [2021-05-02 12:39:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-05-02 12:39:52,516 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 2.0408163265306123) internal successors, (200), 95 states have internal predecessors, (200), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 195 [2021-05-02 12:39:52,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:39:52,517 INFO L225 Difference]: With dead ends: 478 [2021-05-02 12:39:52,517 INFO L226 Difference]: Without dead ends: 472 [2021-05-02 12:39:52,518 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5082 ImplicationChecksByTransitivity, 10211.0ms TimeCoverageRelationStatistics Valid=12674, Invalid=23236, Unknown=0, NotChecked=0, Total=35910 [2021-05-02 12:39:52,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-05-02 12:39:52,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 465. [2021-05-02 12:39:52,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 460 states have (on average 1.1978260869565218) internal successors, (551), 460 states have internal predecessors, (551), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:52,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 555 transitions. [2021-05-02 12:39:52,522 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 555 transitions. Word has length 195 [2021-05-02 12:39:52,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:39:52,522 INFO L480 AbstractCegarLoop]: Abstraction has 465 states and 555 transitions. [2021-05-02 12:39:52,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 98 states, 98 states have (on average 2.0408163265306123) internal successors, (200), 95 states have internal predecessors, (200), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:39:52,522 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 555 transitions. [2021-05-02 12:39:52,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-05-02 12:39:52,523 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:39:52,523 INFO L523 BasicCegarLoop]: trace histogram [91, 90, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:39:52,723 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:39:52,724 INFO L428 AbstractCegarLoop]: === Iteration 92 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:39:52,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:39:52,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1525197495, now seen corresponding path program 90 times [2021-05-02 12:39:52,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:39:52,724 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633325452] [2021-05-02 12:39:52,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:39:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:57,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:39:57,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:39:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:57,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:39:57,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633325452] [2021-05-02 12:39:57,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633325452] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:57,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284466804] [2021-05-02 12:39:57,006 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 12:39:57,257 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 91 check-sat command(s) [2021-05-02 12:39:57,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:39:57,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 801 conjuncts, 97 conjunts are in the unsatisfiable core [2021-05-02 12:39:57,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:39:57,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:39:57,933 INFO L134 CoverageAnalysis]: Checked inductivity of 8190 backedges. 0 proven. 8190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:39:57,934 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284466804] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:39:57,934 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:39:57,934 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 95] total 99 [2021-05-02 12:39:57,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358344959] [2021-05-02 12:39:57,934 INFO L460 AbstractCegarLoop]: Interpolant automaton has 99 states [2021-05-02 12:39:57,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:39:57,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2021-05-02 12:39:57,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4383, Invalid=5319, Unknown=0, NotChecked=0, Total=9702 [2021-05-02 12:39:57,936 INFO L87 Difference]: Start difference. First operand 465 states and 555 transitions. Second operand has 99 states, 99 states have (on average 2.04040404040404) internal successors, (202), 96 states have internal predecessors, (202), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:06,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:40:06,885 INFO L93 Difference]: Finished difference Result 483 states and 575 transitions. [2021-05-02 12:40:06,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-05-02 12:40:06,886 INFO L78 Accepts]: Start accepts. Automaton has has 99 states, 99 states have (on average 2.04040404040404) internal successors, (202), 96 states have internal predecessors, (202), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 197 [2021-05-02 12:40:06,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:40:06,887 INFO L225 Difference]: With dead ends: 483 [2021-05-02 12:40:06,887 INFO L226 Difference]: Without dead ends: 477 [2021-05-02 12:40:06,889 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5184 ImplicationChecksByTransitivity, 11367.3ms TimeCoverageRelationStatistics Valid=12951, Invalid=23721, Unknown=0, NotChecked=0, Total=36672 [2021-05-02 12:40:06,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-05-02 12:40:06,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 470. [2021-05-02 12:40:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 465 states have (on average 1.1978494623655913) internal successors, (557), 465 states have internal predecessors, (557), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:06,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 561 transitions. [2021-05-02 12:40:06,893 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 561 transitions. Word has length 197 [2021-05-02 12:40:06,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:40:06,893 INFO L480 AbstractCegarLoop]: Abstraction has 470 states and 561 transitions. [2021-05-02 12:40:06,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 99 states, 99 states have (on average 2.04040404040404) internal successors, (202), 96 states have internal predecessors, (202), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:06,893 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 561 transitions. [2021-05-02 12:40:06,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-05-02 12:40:06,894 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:40:06,894 INFO L523 BasicCegarLoop]: trace histogram [92, 91, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:40:07,094 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,91 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:40:07,094 INFO L428 AbstractCegarLoop]: === Iteration 93 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:40:07,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:40:07,095 INFO L82 PathProgramCache]: Analyzing trace with hash 772448946, now seen corresponding path program 91 times [2021-05-02 12:40:07,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:40:07,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931595872] [2021-05-02 12:40:07,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:40:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:11,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:40:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:11,878 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:40:11,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931595872] [2021-05-02 12:40:11,878 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931595872] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:11,878 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888606158] [2021-05-02 12:40:11,878 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 12:40:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:11,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 809 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 12:40:11,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:40:12,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:12,519 INFO L134 CoverageAnalysis]: Checked inductivity of 8372 backedges. 0 proven. 8372 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:12,519 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888606158] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:12,519 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:40:12,519 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 96] total 100 [2021-05-02 12:40:12,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616712475] [2021-05-02 12:40:12,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 100 states [2021-05-02 12:40:12,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:40:12,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-05-02 12:40:12,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4477, Invalid=5423, Unknown=0, NotChecked=0, Total=9900 [2021-05-02 12:40:12,521 INFO L87 Difference]: Start difference. First operand 470 states and 561 transitions. Second operand has 100 states, 100 states have (on average 2.04) internal successors, (204), 97 states have internal predecessors, (204), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:19,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:40:19,606 INFO L93 Difference]: Finished difference Result 488 states and 581 transitions. [2021-05-02 12:40:19,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-05-02 12:40:19,606 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 2.04) internal successors, (204), 97 states have internal predecessors, (204), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 199 [2021-05-02 12:40:19,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:40:19,608 INFO L225 Difference]: With dead ends: 488 [2021-05-02 12:40:19,608 INFO L226 Difference]: Without dead ends: 482 [2021-05-02 12:40:19,610 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5287 ImplicationChecksByTransitivity, 10345.7ms TimeCoverageRelationStatistics Valid=13231, Invalid=24211, Unknown=0, NotChecked=0, Total=37442 [2021-05-02 12:40:19,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-05-02 12:40:19,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 475. [2021-05-02 12:40:19,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 470 states have (on average 1.1978723404255318) internal successors, (563), 470 states have internal predecessors, (563), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:19,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 567 transitions. [2021-05-02 12:40:19,614 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 567 transitions. Word has length 199 [2021-05-02 12:40:19,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:40:19,614 INFO L480 AbstractCegarLoop]: Abstraction has 475 states and 567 transitions. [2021-05-02 12:40:19,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 100 states, 100 states have (on average 2.04) internal successors, (204), 97 states have internal predecessors, (204), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:19,614 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 567 transitions. [2021-05-02 12:40:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-05-02 12:40:19,615 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:40:19,615 INFO L523 BasicCegarLoop]: trace histogram [93, 92, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:40:19,823 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2021-05-02 12:40:19,823 INFO L428 AbstractCegarLoop]: === Iteration 94 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:40:19,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:40:19,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1064400915, now seen corresponding path program 92 times [2021-05-02 12:40:19,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:40:19,823 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537459490] [2021-05-02 12:40:19,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:40:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:23,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:40:23,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:23,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:40:23,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537459490] [2021-05-02 12:40:23,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537459490] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:23,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981721046] [2021-05-02 12:40:23,565 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 12:40:23,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:40:23,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:40:23,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 99 conjunts are in the unsatisfiable core [2021-05-02 12:40:23,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:40:23,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,795 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:23,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8556 backedges. 0 proven. 8556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:24,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981721046] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:24,213 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:40:24,214 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [98, 97] total 101 [2021-05-02 12:40:24,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192893451] [2021-05-02 12:40:24,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 101 states [2021-05-02 12:40:24,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:40:24,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2021-05-02 12:40:24,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4572, Invalid=5528, Unknown=0, NotChecked=0, Total=10100 [2021-05-02 12:40:24,215 INFO L87 Difference]: Start difference. First operand 475 states and 567 transitions. Second operand has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 98 states have internal predecessors, (206), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:31,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:40:31,429 INFO L93 Difference]: Finished difference Result 493 states and 587 transitions. [2021-05-02 12:40:31,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-02 12:40:31,430 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 98 states have internal predecessors, (206), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 201 [2021-05-02 12:40:31,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:40:31,431 INFO L225 Difference]: With dead ends: 493 [2021-05-02 12:40:31,431 INFO L226 Difference]: Without dead ends: 487 [2021-05-02 12:40:31,433 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5391 ImplicationChecksByTransitivity, 9463.1ms TimeCoverageRelationStatistics Valid=13514, Invalid=24706, Unknown=0, NotChecked=0, Total=38220 [2021-05-02 12:40:31,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-05-02 12:40:31,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 480. [2021-05-02 12:40:31,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 475 states have (on average 1.1978947368421053) internal successors, (569), 475 states have internal predecessors, (569), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:31,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 573 transitions. [2021-05-02 12:40:31,437 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 573 transitions. Word has length 201 [2021-05-02 12:40:31,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:40:31,437 INFO L480 AbstractCegarLoop]: Abstraction has 480 states and 573 transitions. [2021-05-02 12:40:31,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 101 states, 101 states have (on average 2.0396039603960396) internal successors, (206), 98 states have internal predecessors, (206), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:31,437 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 573 transitions. [2021-05-02 12:40:31,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-05-02 12:40:31,438 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:40:31,438 INFO L523 BasicCegarLoop]: trace histogram [94, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:40:31,638 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93,93 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:40:31,639 INFO L428 AbstractCegarLoop]: === Iteration 95 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:40:31,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:40:31,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1045558680, now seen corresponding path program 93 times [2021-05-02 12:40:31,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:40:31,639 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095892864] [2021-05-02 12:40:31,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:40:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:35,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:40:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:35,514 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:35,514 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:40:35,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095892864] [2021-05-02 12:40:35,514 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095892864] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:35,514 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792027068] [2021-05-02 12:40:35,514 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 12:40:35,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 94 check-sat command(s) [2021-05-02 12:40:35,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:40:35,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 12:40:35,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:40:35,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:35,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:36,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8742 backedges. 0 proven. 8742 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:36,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792027068] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:36,301 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:40:36,301 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [99, 98] total 102 [2021-05-02 12:40:36,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758112563] [2021-05-02 12:40:36,301 INFO L460 AbstractCegarLoop]: Interpolant automaton has 102 states [2021-05-02 12:40:36,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:40:36,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants. [2021-05-02 12:40:36,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4668, Invalid=5634, Unknown=0, NotChecked=0, Total=10302 [2021-05-02 12:40:36,303 INFO L87 Difference]: Start difference. First operand 480 states and 573 transitions. Second operand has 102 states, 102 states have (on average 2.0392156862745097) internal successors, (208), 99 states have internal predecessors, (208), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:43,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:40:43,779 INFO L93 Difference]: Finished difference Result 498 states and 593 transitions. [2021-05-02 12:40:43,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2021-05-02 12:40:43,779 INFO L78 Accepts]: Start accepts. Automaton has has 102 states, 102 states have (on average 2.0392156862745097) internal successors, (208), 99 states have internal predecessors, (208), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 203 [2021-05-02 12:40:43,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:40:43,781 INFO L225 Difference]: With dead ends: 498 [2021-05-02 12:40:43,781 INFO L226 Difference]: Without dead ends: 492 [2021-05-02 12:40:43,782 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5496 ImplicationChecksByTransitivity, 9785.9ms TimeCoverageRelationStatistics Valid=13800, Invalid=25206, Unknown=0, NotChecked=0, Total=39006 [2021-05-02 12:40:43,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-05-02 12:40:43,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 485. [2021-05-02 12:40:43,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 480 states have (on average 1.1979166666666667) internal successors, (575), 480 states have internal predecessors, (575), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:43,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 579 transitions. [2021-05-02 12:40:43,787 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 579 transitions. Word has length 203 [2021-05-02 12:40:43,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:40:43,787 INFO L480 AbstractCegarLoop]: Abstraction has 485 states and 579 transitions. [2021-05-02 12:40:43,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 102 states, 102 states have (on average 2.0392156862745097) internal successors, (208), 99 states have internal predecessors, (208), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:43,787 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 579 transitions. [2021-05-02 12:40:43,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2021-05-02 12:40:43,788 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:40:43,788 INFO L523 BasicCegarLoop]: trace histogram [95, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:40:43,988 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable94 [2021-05-02 12:40:43,989 INFO L428 AbstractCegarLoop]: === Iteration 96 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:40:43,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:40:43,989 INFO L82 PathProgramCache]: Analyzing trace with hash -118040029, now seen corresponding path program 94 times [2021-05-02 12:40:43,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:40:43,989 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676830357] [2021-05-02 12:40:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:40:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:47,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:40:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:40:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:47,931 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:40:47,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676830357] [2021-05-02 12:40:47,931 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676830357] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:47,931 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370914682] [2021-05-02 12:40:47,931 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 12:40:48,046 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:40:48,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:40:48,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 98 conjunts are in the unsatisfiable core [2021-05-02 12:40:48,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:40:48,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:40:48,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8930 backedges. 0 proven. 8930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:40:48,652 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370914682] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:40:48,652 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:40:48,653 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [100, 99] total 103 [2021-05-02 12:40:48,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606665672] [2021-05-02 12:40:48,653 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 12:40:48,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:40:48,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 12:40:48,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4765, Invalid=5741, Unknown=0, NotChecked=0, Total=10506 [2021-05-02 12:40:48,654 INFO L87 Difference]: Start difference. First operand 485 states and 579 transitions. Second operand has 103 states, 103 states have (on average 2.0388349514563107) internal successors, (210), 100 states have internal predecessors, (210), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:59,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:40:59,698 INFO L93 Difference]: Finished difference Result 503 states and 599 transitions. [2021-05-02 12:40:59,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-02 12:40:59,699 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0388349514563107) internal successors, (210), 100 states have internal predecessors, (210), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 205 [2021-05-02 12:40:59,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:40:59,700 INFO L225 Difference]: With dead ends: 503 [2021-05-02 12:40:59,701 INFO L226 Difference]: Without dead ends: 497 [2021-05-02 12:40:59,702 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5602 ImplicationChecksByTransitivity, 12865.0ms TimeCoverageRelationStatistics Valid=14089, Invalid=25711, Unknown=0, NotChecked=0, Total=39800 [2021-05-02 12:40:59,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-05-02 12:40:59,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 490. [2021-05-02 12:40:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 485 states have (on average 1.1979381443298969) internal successors, (581), 485 states have internal predecessors, (581), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 585 transitions. [2021-05-02 12:40:59,707 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 585 transitions. Word has length 205 [2021-05-02 12:40:59,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:40:59,707 INFO L480 AbstractCegarLoop]: Abstraction has 490 states and 585 transitions. [2021-05-02 12:40:59,707 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0388349514563107) internal successors, (210), 100 states have internal predecessors, (210), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:40:59,707 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 585 transitions. [2021-05-02 12:40:59,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-05-02 12:40:59,708 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:40:59,708 INFO L523 BasicCegarLoop]: trace histogram [96, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:40:59,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:40:59,909 INFO L428 AbstractCegarLoop]: === Iteration 97 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:40:59,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:40:59,909 INFO L82 PathProgramCache]: Analyzing trace with hash -2125813986, now seen corresponding path program 95 times [2021-05-02 12:40:59,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:40:59,910 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99747862] [2021-05-02 12:40:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:40:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:06,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:41:06,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:06,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:06,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:41:06,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99747862] [2021-05-02 12:41:06,918 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99747862] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:06,918 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419483974] [2021-05-02 12:41:06,918 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 12:41:07,122 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 96 check-sat command(s) [2021-05-02 12:41:07,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:41:07,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 841 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-02 12:41:07,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:41:07,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,288 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:07,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9120 backedges. 0 proven. 9120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:07,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419483974] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:07,769 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:41:07,769 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 100] total 104 [2021-05-02 12:41:07,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392025709] [2021-05-02 12:41:07,769 INFO L460 AbstractCegarLoop]: Interpolant automaton has 104 states [2021-05-02 12:41:07,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:41:07,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-05-02 12:41:07,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4863, Invalid=5849, Unknown=0, NotChecked=0, Total=10712 [2021-05-02 12:41:07,771 INFO L87 Difference]: Start difference. First operand 490 states and 585 transitions. Second operand has 104 states, 104 states have (on average 2.0384615384615383) internal successors, (212), 101 states have internal predecessors, (212), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:41:15,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:41:15,978 INFO L93 Difference]: Finished difference Result 508 states and 605 transitions. [2021-05-02 12:41:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2021-05-02 12:41:15,979 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.0384615384615383) internal successors, (212), 101 states have internal predecessors, (212), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 207 [2021-05-02 12:41:15,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:41:15,980 INFO L225 Difference]: With dead ends: 508 [2021-05-02 12:41:15,981 INFO L226 Difference]: Without dead ends: 502 [2021-05-02 12:41:15,983 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5709 ImplicationChecksByTransitivity, 13354.0ms TimeCoverageRelationStatistics Valid=14381, Invalid=26221, Unknown=0, NotChecked=0, Total=40602 [2021-05-02 12:41:15,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-05-02 12:41:15,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 495. [2021-05-02 12:41:15,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 490 states have (on average 1.1979591836734693) internal successors, (587), 490 states have internal predecessors, (587), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:41:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 591 transitions. [2021-05-02 12:41:15,987 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 591 transitions. Word has length 207 [2021-05-02 12:41:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:41:15,987 INFO L480 AbstractCegarLoop]: Abstraction has 495 states and 591 transitions. [2021-05-02 12:41:15,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 104 states, 104 states have (on average 2.0384615384615383) internal successors, (212), 101 states have internal predecessors, (212), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:41:15,987 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 591 transitions. [2021-05-02 12:41:15,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-05-02 12:41:15,988 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:41:15,988 INFO L523 BasicCegarLoop]: trace histogram [97, 96, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:41:16,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:41:16,189 INFO L428 AbstractCegarLoop]: === Iteration 98 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:41:16,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:41:16,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1138696537, now seen corresponding path program 96 times [2021-05-02 12:41:16,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:41:16,189 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823323079] [2021-05-02 12:41:16,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:41:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:23,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:41:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:23,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:23,017 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:41:23,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823323079] [2021-05-02 12:41:23,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823323079] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:23,017 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961875366] [2021-05-02 12:41:23,017 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 12:41:23,259 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 97 check-sat command(s) [2021-05-02 12:41:23,259 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:41:23,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 103 conjunts are in the unsatisfiable core [2021-05-02 12:41:23,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:41:23,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:23,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:24,317 INFO L134 CoverageAnalysis]: Checked inductivity of 9312 backedges. 0 proven. 9312 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:24,317 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961875366] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:24,317 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:41:24,317 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101] total 105 [2021-05-02 12:41:24,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370879294] [2021-05-02 12:41:24,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 105 states [2021-05-02 12:41:24,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:41:24,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-05-02 12:41:24,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=4962, Invalid=5958, Unknown=0, NotChecked=0, Total=10920 [2021-05-02 12:41:24,319 INFO L87 Difference]: Start difference. First operand 495 states and 591 transitions. Second operand has 105 states, 105 states have (on average 2.038095238095238) internal successors, (214), 102 states have internal predecessors, (214), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:41:36,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:41:36,666 INFO L93 Difference]: Finished difference Result 513 states and 611 transitions. [2021-05-02 12:41:36,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2021-05-02 12:41:36,667 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 2.038095238095238) internal successors, (214), 102 states have internal predecessors, (214), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 209 [2021-05-02 12:41:36,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:41:36,668 INFO L225 Difference]: With dead ends: 513 [2021-05-02 12:41:36,668 INFO L226 Difference]: Without dead ends: 507 [2021-05-02 12:41:36,670 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5817 ImplicationChecksByTransitivity, 16775.9ms TimeCoverageRelationStatistics Valid=14676, Invalid=26736, Unknown=0, NotChecked=0, Total=41412 [2021-05-02 12:41:36,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-05-02 12:41:36,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 500. [2021-05-02 12:41:36,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 495 states have (on average 1.197979797979798) internal successors, (593), 495 states have internal predecessors, (593), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:41:36,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 597 transitions. [2021-05-02 12:41:36,685 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 597 transitions. Word has length 209 [2021-05-02 12:41:36,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:41:36,685 INFO L480 AbstractCegarLoop]: Abstraction has 500 states and 597 transitions. [2021-05-02 12:41:36,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 105 states, 105 states have (on average 2.038095238095238) internal successors, (214), 102 states have internal predecessors, (214), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:41:36,685 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 597 transitions. [2021-05-02 12:41:36,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-05-02 12:41:36,686 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:41:36,686 INFO L523 BasicCegarLoop]: trace histogram [98, 97, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:41:36,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable97 [2021-05-02 12:41:36,887 INFO L428 AbstractCegarLoop]: === Iteration 99 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:41:36,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:41:36,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1287784236, now seen corresponding path program 97 times [2021-05-02 12:41:36,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:41:36,887 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29196978] [2021-05-02 12:41:36,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:41:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:41,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:41:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:41,220 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:41:41,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29196978] [2021-05-02 12:41:41,220 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29196978] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:41,220 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776240558] [2021-05-02 12:41:41,220 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 12:41:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:41:41,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 104 conjunts are in the unsatisfiable core [2021-05-02 12:41:41,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:41:41,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,522 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 12:41:41,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,794 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 12:41:41,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:41,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:41:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9506 backedges. 0 proven. 9506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:41:42,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776240558] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:41:42,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:41:42,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [103, 102] total 106 [2021-05-02 12:41:42,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516023295] [2021-05-02 12:41:42,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 106 states [2021-05-02 12:41:42,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:41:42,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2021-05-02 12:41:42,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5062, Invalid=6068, Unknown=0, NotChecked=0, Total=11130 [2021-05-02 12:41:42,490 INFO L87 Difference]: Start difference. First operand 500 states and 597 transitions. Second operand has 106 states, 106 states have (on average 2.0377358490566038) internal successors, (216), 103 states have internal predecessors, (216), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:41:56,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:41:56,035 INFO L93 Difference]: Finished difference Result 518 states and 617 transitions. [2021-05-02 12:41:56,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 12:41:56,037 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 2.0377358490566038) internal successors, (216), 103 states have internal predecessors, (216), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 211 [2021-05-02 12:41:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:41:56,038 INFO L225 Difference]: With dead ends: 518 [2021-05-02 12:41:56,038 INFO L226 Difference]: Without dead ends: 512 [2021-05-02 12:41:56,040 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5926 ImplicationChecksByTransitivity, 15258.1ms TimeCoverageRelationStatistics Valid=14974, Invalid=27256, Unknown=0, NotChecked=0, Total=42230 [2021-05-02 12:41:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-05-02 12:41:56,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 505. [2021-05-02 12:41:56,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 500 states have (on average 1.198) internal successors, (599), 500 states have internal predecessors, (599), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:41:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 603 transitions. [2021-05-02 12:41:56,045 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 603 transitions. Word has length 211 [2021-05-02 12:41:56,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:41:56,045 INFO L480 AbstractCegarLoop]: Abstraction has 505 states and 603 transitions. [2021-05-02 12:41:56,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 106 states, 106 states have (on average 2.0377358490566038) internal successors, (216), 103 states have internal predecessors, (216), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:41:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 603 transitions. [2021-05-02 12:41:56,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-05-02 12:41:56,046 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:41:56,046 INFO L523 BasicCegarLoop]: trace histogram [99, 98, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:41:56,248 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:41:56,249 INFO L428 AbstractCegarLoop]: === Iteration 100 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:41:56,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:41:56,249 INFO L82 PathProgramCache]: Analyzing trace with hash -968565361, now seen corresponding path program 98 times [2021-05-02 12:41:56,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:41:56,249 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704810904] [2021-05-02 12:41:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:41:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:01,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:42:01,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:01,795 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:42:01,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704810904] [2021-05-02 12:42:01,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704810904] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:42:01,795 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049459733] [2021-05-02 12:42:01,795 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 12:42:01,914 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:42:01,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:42:01,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 105 conjunts are in the unsatisfiable core [2021-05-02 12:42:01,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:42:01,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:01,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:02,943 INFO L134 CoverageAnalysis]: Checked inductivity of 9702 backedges. 0 proven. 9702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:02,943 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049459733] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:42:02,943 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:42:02,944 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [104, 103] total 107 [2021-05-02 12:42:02,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351868120] [2021-05-02 12:42:02,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 107 states [2021-05-02 12:42:02,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:42:02,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2021-05-02 12:42:02,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5163, Invalid=6179, Unknown=0, NotChecked=0, Total=11342 [2021-05-02 12:42:02,945 INFO L87 Difference]: Start difference. First operand 505 states and 603 transitions. Second operand has 107 states, 107 states have (on average 2.0373831775700935) internal successors, (218), 104 states have internal predecessors, (218), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:42:16,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:42:16,973 INFO L93 Difference]: Finished difference Result 523 states and 623 transitions. [2021-05-02 12:42:16,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-05-02 12:42:16,975 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 2.0373831775700935) internal successors, (218), 104 states have internal predecessors, (218), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 213 [2021-05-02 12:42:16,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:42:16,977 INFO L225 Difference]: With dead ends: 523 [2021-05-02 12:42:16,977 INFO L226 Difference]: Without dead ends: 517 [2021-05-02 12:42:16,978 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 206 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6036 ImplicationChecksByTransitivity, 16902.2ms TimeCoverageRelationStatistics Valid=15275, Invalid=27781, Unknown=0, NotChecked=0, Total=43056 [2021-05-02 12:42:16,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-05-02 12:42:16,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 510. [2021-05-02 12:42:16,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 505 states have (on average 1.198019801980198) internal successors, (605), 505 states have internal predecessors, (605), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:42:16,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 609 transitions. [2021-05-02 12:42:16,983 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 609 transitions. Word has length 213 [2021-05-02 12:42:16,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:42:16,983 INFO L480 AbstractCegarLoop]: Abstraction has 510 states and 609 transitions. [2021-05-02 12:42:16,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 107 states, 107 states have (on average 2.0373831775700935) internal successors, (218), 104 states have internal predecessors, (218), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:42:16,983 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 609 transitions. [2021-05-02 12:42:16,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-05-02 12:42:16,984 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:42:16,984 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:42:17,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:42:17,191 INFO L428 AbstractCegarLoop]: === Iteration 101 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:42:17,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:42:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash 858095498, now seen corresponding path program 99 times [2021-05-02 12:42:17,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:42:17,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094554704] [2021-05-02 12:42:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:42:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:23,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:42:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:23,987 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:42:23,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094554704] [2021-05-02 12:42:23,988 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094554704] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:42:23,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554256728] [2021-05-02 12:42:23,988 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 12:42:24,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2021-05-02 12:42:24,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:42:24,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-02 12:42:24,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:42:24,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,847 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:24,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 9900 backedges. 0 proven. 9900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:25,001 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554256728] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:42:25,001 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:42:25,001 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [105, 105] total 109 [2021-05-02 12:42:25,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894679505] [2021-05-02 12:42:25,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-02 12:42:25,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:42:25,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-02 12:42:25,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5267, Invalid=6505, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 12:42:25,002 INFO L87 Difference]: Start difference. First operand 510 states and 609 transitions. Second operand has 109 states, 109 states have (on average 2.0275229357798166) internal successors, (221), 106 states have internal predecessors, (221), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:42:35,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:42:35,302 INFO L93 Difference]: Finished difference Result 526 states and 627 transitions. [2021-05-02 12:42:35,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 12:42:35,303 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0275229357798166) internal successors, (221), 106 states have internal predecessors, (221), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 215 [2021-05-02 12:42:35,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:42:35,305 INFO L225 Difference]: With dead ends: 526 [2021-05-02 12:42:35,305 INFO L226 Difference]: Without dead ends: 520 [2021-05-02 12:42:35,307 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6249 ImplicationChecksByTransitivity, 15093.7ms TimeCoverageRelationStatistics Valid=15789, Invalid=28943, Unknown=0, NotChecked=0, Total=44732 [2021-05-02 12:42:35,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-05-02 12:42:35,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 515. [2021-05-02 12:42:35,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 510 states have (on average 1.1980392156862745) internal successors, (611), 510 states have internal predecessors, (611), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:42:35,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 615 transitions. [2021-05-02 12:42:35,312 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 615 transitions. Word has length 215 [2021-05-02 12:42:35,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:42:35,312 INFO L480 AbstractCegarLoop]: Abstraction has 515 states and 615 transitions. [2021-05-02 12:42:35,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 109 states, 109 states have (on average 2.0275229357798166) internal successors, (221), 106 states have internal predecessors, (221), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:42:35,312 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 615 transitions. [2021-05-02 12:42:35,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-02 12:42:35,313 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:42:35,313 INFO L523 BasicCegarLoop]: trace histogram [101, 100, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:42:35,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable100 [2021-05-02 12:42:35,514 INFO L428 AbstractCegarLoop]: === Iteration 102 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:42:35,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:42:35,514 INFO L82 PathProgramCache]: Analyzing trace with hash -362443067, now seen corresponding path program 100 times [2021-05-02 12:42:35,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:42:35,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771355392] [2021-05-02 12:42:35,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:42:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:40,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:42:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 0 proven. 10100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:40,359 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:42:40,359 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771355392] [2021-05-02 12:42:40,360 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771355392] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:42:40,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460386308] [2021-05-02 12:42:40,360 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 12:42:40,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:42:40,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:42:40,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 102 conjunts are in the unsatisfiable core [2021-05-02 12:42:40,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:42:40,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,558 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:40,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:41,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:42,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:43,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:44,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:45,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,706 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:46,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:47,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:48,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:49,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:50,756 INFO L134 CoverageAnalysis]: Checked inductivity of 10100 backedges. 10100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:50,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460386308] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:42:50,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-02 12:42:50,757 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [106] total 207 [2021-05-02 12:42:50,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453855249] [2021-05-02 12:42:50,757 INFO L460 AbstractCegarLoop]: Interpolant automaton has 103 states [2021-05-02 12:42:50,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:42:50,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2021-05-02 12:42:50,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10511, Invalid=32131, Unknown=0, NotChecked=0, Total=42642 [2021-05-02 12:42:50,759 INFO L87 Difference]: Start difference. First operand 515 states and 615 transitions. Second operand has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 103 states have internal predecessors, (213), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:42:51,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:42:51,506 INFO L93 Difference]: Finished difference Result 10815 states and 11013 transitions. [2021-05-02 12:42:51,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2021-05-02 12:42:51,517 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 103 states have internal predecessors, (213), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217 [2021-05-02 12:42:51,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:42:51,531 INFO L225 Difference]: With dead ends: 10815 [2021-05-02 12:42:51,531 INFO L226 Difference]: Without dead ends: 10606 [2021-05-02 12:42:51,537 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10400 ImplicationChecksByTransitivity, 14377.4ms TimeCoverageRelationStatistics Valid=10511, Invalid=32131, Unknown=0, NotChecked=0, Total=42642 [2021-05-02 12:42:51,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10606 states. [2021-05-02 12:42:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10606 to 10410. [2021-05-02 12:42:51,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10410 states, 10405 states have (on average 1.0189332051898126) internal successors, (10602), 10405 states have internal predecessors, (10602), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:42:51,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10410 states to 10410 states and 10606 transitions. [2021-05-02 12:42:51,646 INFO L78 Accepts]: Start accepts. Automaton has 10410 states and 10606 transitions. Word has length 217 [2021-05-02 12:42:51,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:42:51,646 INFO L480 AbstractCegarLoop]: Abstraction has 10410 states and 10606 transitions. [2021-05-02 12:42:51,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 103 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 103 states have internal predecessors, (213), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:42:51,647 INFO L276 IsEmpty]: Start isEmpty. Operand 10410 states and 10606 transitions. [2021-05-02 12:42:51,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-05-02 12:42:51,655 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:42:51,655 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:42:51,873 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-05-02 12:42:51,873 INFO L428 AbstractCegarLoop]: === Iteration 103 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:42:51,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:42:51,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1594537039, now seen corresponding path program 1 times [2021-05-02 12:42:51,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:42:51,874 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286557496] [2021-05-02 12:42:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:42:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:56,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:42:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9902 backedges. 0 proven. 9902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:56,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:42:56,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286557496] [2021-05-02 12:42:56,824 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286557496] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:42:56,824 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423164389] [2021-05-02 12:42:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:42:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:42:56,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 107 conjunts are in the unsatisfiable core [2021-05-02 12:42:56,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:42:56,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:56,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,202 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,410 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,439 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,463 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,471 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,477 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,504 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:42:57,680 INFO L134 CoverageAnalysis]: Checked inductivity of 9902 backedges. 0 proven. 9902 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:42:57,680 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423164389] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:42:57,680 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:42:57,680 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [106, 105] total 109 [2021-05-02 12:42:57,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944371767] [2021-05-02 12:42:57,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 109 states [2021-05-02 12:42:57,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:42:57,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2021-05-02 12:42:57,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5368, Invalid=6404, Unknown=0, NotChecked=0, Total=11772 [2021-05-02 12:42:57,682 INFO L87 Difference]: Start difference. First operand 10410 states and 10606 transitions. Second operand has 109 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 106 states have internal predecessors, (219), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:43:14,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:43:14,775 INFO L93 Difference]: Finished difference Result 10618 states and 10912 transitions. [2021-05-02 12:43:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2021-05-02 12:43:14,778 INFO L78 Accepts]: Start accepts. Automaton has has 109 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 106 states have internal predecessors, (219), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 217 [2021-05-02 12:43:14,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:43:14,791 INFO L225 Difference]: With dead ends: 10618 [2021-05-02 12:43:14,791 INFO L226 Difference]: Without dead ends: 10411 [2021-05-02 12:43:14,797 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 210 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6259 ImplicationChecksByTransitivity, 18832.3ms TimeCoverageRelationStatistics Valid=15886, Invalid=28846, Unknown=0, NotChecked=0, Total=44732 [2021-05-02 12:43:14,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10411 states. [2021-05-02 12:43:14,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10411 to 10405. [2021-05-02 12:43:14,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10405 states, 10400 states have (on average 1.01875) internal successors, (10595), 10400 states have internal predecessors, (10595), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:43:14,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10405 states to 10405 states and 10599 transitions. [2021-05-02 12:43:14,896 INFO L78 Accepts]: Start accepts. Automaton has 10405 states and 10599 transitions. Word has length 217 [2021-05-02 12:43:14,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:43:14,896 INFO L480 AbstractCegarLoop]: Abstraction has 10405 states and 10599 transitions. [2021-05-02 12:43:14,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 109 states, 109 states have (on average 2.0091743119266057) internal successors, (219), 106 states have internal predecessors, (219), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:43:14,897 INFO L276 IsEmpty]: Start isEmpty. Operand 10405 states and 10599 transitions. [2021-05-02 12:43:14,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-05-02 12:43:14,907 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:43:14,907 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:43:15,120 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable102 [2021-05-02 12:43:15,121 INFO L428 AbstractCegarLoop]: === Iteration 104 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:43:15,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:43:15,121 INFO L82 PathProgramCache]: Analyzing trace with hash 645254100, now seen corresponding path program 2 times [2021-05-02 12:43:15,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:43:15,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165543792] [2021-05-02 12:43:15,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:43:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:43:25,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:43:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:43:25,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9906 backedges. 0 proven. 9906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:43:25,979 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:43:25,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165543792] [2021-05-02 12:43:25,979 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165543792] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:43:25,979 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680216368] [2021-05-02 12:43:25,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:43:26,106 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:43:26,106 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:43:26,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 108 conjunts are in the unsatisfiable core [2021-05-02 12:43:26,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:43:26,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,556 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,708 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:26,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,278 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,482 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,496 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9906 backedges. 0 proven. 9906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:43:27,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680216368] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:43:27,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:43:27,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 106] total 110 [2021-05-02 12:43:27,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035284024] [2021-05-02 12:43:27,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 110 states [2021-05-02 12:43:27,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:43:27,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants. [2021-05-02 12:43:27,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5472, Invalid=6518, Unknown=0, NotChecked=0, Total=11990 [2021-05-02 12:43:27,845 INFO L87 Difference]: Start difference. First operand 10405 states and 10599 transitions. Second operand has 110 states, 110 states have (on average 2.0090909090909093) internal successors, (221), 107 states have internal predecessors, (221), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:43:43,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:43:43,634 INFO L93 Difference]: Finished difference Result 10614 states and 10906 transitions. [2021-05-02 12:43:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2021-05-02 12:43:43,635 INFO L78 Accepts]: Start accepts. Automaton has has 110 states, 110 states have (on average 2.0090909090909093) internal successors, (221), 107 states have internal predecessors, (221), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 219 [2021-05-02 12:43:43,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:43:43,646 INFO L225 Difference]: With dead ends: 10614 [2021-05-02 12:43:43,646 INFO L226 Difference]: Without dead ends: 10407 [2021-05-02 12:43:43,651 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6372 ImplicationChecksByTransitivity, 23498.5ms TimeCoverageRelationStatistics Valid=16196, Invalid=29386, Unknown=0, NotChecked=0, Total=45582 [2021-05-02 12:43:43,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10407 states. [2021-05-02 12:43:43,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10407 to 10398. [2021-05-02 12:43:43,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10398 states, 10393 states have (on average 1.0185701914750314) internal successors, (10586), 10393 states have internal predecessors, (10586), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:43:43,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10398 states to 10398 states and 10590 transitions. [2021-05-02 12:43:43,745 INFO L78 Accepts]: Start accepts. Automaton has 10398 states and 10590 transitions. Word has length 219 [2021-05-02 12:43:43,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:43:43,745 INFO L480 AbstractCegarLoop]: Abstraction has 10398 states and 10590 transitions. [2021-05-02 12:43:43,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 110 states, 110 states have (on average 2.0090909090909093) internal successors, (221), 107 states have internal predecessors, (221), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:43:43,746 INFO L276 IsEmpty]: Start isEmpty. Operand 10398 states and 10590 transitions. [2021-05-02 12:43:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2021-05-02 12:43:43,754 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:43:43,755 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:43:43,972 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable103 [2021-05-02 12:43:43,973 INFO L428 AbstractCegarLoop]: === Iteration 105 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:43:43,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:43:43,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1082583527, now seen corresponding path program 3 times [2021-05-02 12:43:43,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:43:43,973 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050962303] [2021-05-02 12:43:43,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:43:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:43:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:43:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:43:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9912 backedges. 0 proven. 9912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:43:49,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:43:49,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050962303] [2021-05-02 12:43:49,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050962303] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:43:49,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921175028] [2021-05-02 12:43:49,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:43:49,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2021-05-02 12:43:49,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:43:49,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 109 conjunts are in the unsatisfiable core [2021-05-02 12:43:49,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:43:49,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,602 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:49,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,177 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:43:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 9912 backedges. 0 proven. 9912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:43:50,338 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921175028] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:43:50,338 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:43:50,338 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 107] total 111 [2021-05-02 12:43:50,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847725199] [2021-05-02 12:43:50,339 INFO L460 AbstractCegarLoop]: Interpolant automaton has 111 states [2021-05-02 12:43:50,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:43:50,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2021-05-02 12:43:50,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5577, Invalid=6633, Unknown=0, NotChecked=0, Total=12210 [2021-05-02 12:43:50,340 INFO L87 Difference]: Start difference. First operand 10398 states and 10590 transitions. Second operand has 111 states, 111 states have (on average 2.009009009009009) internal successors, (223), 108 states have internal predecessors, (223), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:44:02,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:44:02,813 INFO L93 Difference]: Finished difference Result 10608 states and 10898 transitions. [2021-05-02 12:44:02,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-05-02 12:44:02,813 INFO L78 Accepts]: Start accepts. Automaton has has 111 states, 111 states have (on average 2.009009009009009) internal successors, (223), 108 states have internal predecessors, (223), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 221 [2021-05-02 12:44:02,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:44:02,825 INFO L225 Difference]: With dead ends: 10608 [2021-05-02 12:44:02,825 INFO L226 Difference]: Without dead ends: 10401 [2021-05-02 12:44:02,829 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6486 ImplicationChecksByTransitivity, 15150.7ms TimeCoverageRelationStatistics Valid=16509, Invalid=29931, Unknown=0, NotChecked=0, Total=46440 [2021-05-02 12:44:02,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10401 states. [2021-05-02 12:44:02,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10401 to 10389. [2021-05-02 12:44:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10389 states, 10384 states have (on average 1.0183936825885977) internal successors, (10575), 10384 states have internal predecessors, (10575), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:44:02,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10389 states to 10389 states and 10579 transitions. [2021-05-02 12:44:02,896 INFO L78 Accepts]: Start accepts. Automaton has 10389 states and 10579 transitions. Word has length 221 [2021-05-02 12:44:02,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:44:02,896 INFO L480 AbstractCegarLoop]: Abstraction has 10389 states and 10579 transitions. [2021-05-02 12:44:02,896 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 111 states, 111 states have (on average 2.009009009009009) internal successors, (223), 108 states have internal predecessors, (223), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:44:02,896 INFO L276 IsEmpty]: Start isEmpty. Operand 10389 states and 10579 transitions. [2021-05-02 12:44:02,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-05-02 12:44:02,905 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:44:02,905 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:44:03,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-02 12:44:03,117 INFO L428 AbstractCegarLoop]: === Iteration 106 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:44:03,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:44:03,117 INFO L82 PathProgramCache]: Analyzing trace with hash 617800478, now seen corresponding path program 4 times [2021-05-02 12:44:03,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:44:03,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858641733] [2021-05-02 12:44:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:44:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:44:09,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:44:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:44:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9920 backedges. 0 proven. 9920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:44:09,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:44:09,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858641733] [2021-05-02 12:44:09,301 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858641733] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:44:09,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416435838] [2021-05-02 12:44:09,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 12:44:09,429 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:44:09,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:44:09,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 107 conjunts are in the unsatisfiable core [2021-05-02 12:44:09,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:44:09,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,534 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,588 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,589 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,600 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,658 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,775 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:09,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,354 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:10,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9920 backedges. 0 proven. 9920 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:44:10,528 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416435838] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:44:10,528 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:44:10,529 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [109, 108] total 112 [2021-05-02 12:44:10,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975245284] [2021-05-02 12:44:10,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 112 states [2021-05-02 12:44:10,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:44:10,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants. [2021-05-02 12:44:10,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5683, Invalid=6749, Unknown=0, NotChecked=0, Total=12432 [2021-05-02 12:44:10,530 INFO L87 Difference]: Start difference. First operand 10389 states and 10579 transitions. Second operand has 112 states, 112 states have (on average 2.0089285714285716) internal successors, (225), 109 states have internal predecessors, (225), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:44:23,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:44:23,572 INFO L93 Difference]: Finished difference Result 10600 states and 10888 transitions. [2021-05-02 12:44:23,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-05-02 12:44:23,573 INFO L78 Accepts]: Start accepts. Automaton has has 112 states, 112 states have (on average 2.0089285714285716) internal successors, (225), 109 states have internal predecessors, (225), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 223 [2021-05-02 12:44:23,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:44:23,582 INFO L225 Difference]: With dead ends: 10600 [2021-05-02 12:44:23,582 INFO L226 Difference]: Without dead ends: 10393 [2021-05-02 12:44:23,585 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6601 ImplicationChecksByTransitivity, 16491.1ms TimeCoverageRelationStatistics Valid=16825, Invalid=30481, Unknown=0, NotChecked=0, Total=47306 [2021-05-02 12:44:23,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10393 states. [2021-05-02 12:44:23,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10393 to 10378. [2021-05-02 12:44:23,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10378 states, 10373 states have (on average 1.0182203798322569) internal successors, (10562), 10373 states have internal predecessors, (10562), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:44:23,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10378 states to 10378 states and 10566 transitions. [2021-05-02 12:44:23,659 INFO L78 Accepts]: Start accepts. Automaton has 10378 states and 10566 transitions. Word has length 223 [2021-05-02 12:44:23,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:44:23,659 INFO L480 AbstractCegarLoop]: Abstraction has 10378 states and 10566 transitions. [2021-05-02 12:44:23,659 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 112 states, 112 states have (on average 2.0089285714285716) internal successors, (225), 109 states have internal predecessors, (225), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:44:23,659 INFO L276 IsEmpty]: Start isEmpty. Operand 10378 states and 10566 transitions. [2021-05-02 12:44:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-05-02 12:44:23,668 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:44:23,668 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:44:23,886 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable105 [2021-05-02 12:44:23,887 INFO L428 AbstractCegarLoop]: === Iteration 107 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:44:23,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:44:23,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1695710493, now seen corresponding path program 5 times [2021-05-02 12:44:23,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:44:23,888 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014954994] [2021-05-02 12:44:23,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:44:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:44:29,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:44:29,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:44:29,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9930 backedges. 0 proven. 9930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:44:29,908 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:44:29,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014954994] [2021-05-02 12:44:29,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014954994] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:44:29,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769840679] [2021-05-02 12:44:29,908 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:44:30,110 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 100 check-sat command(s) [2021-05-02 12:44:30,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:44:30,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 903 conjuncts, 111 conjunts are in the unsatisfiable core [2021-05-02 12:44:30,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:44:30,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,240 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,270 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,284 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,389 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,411 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,425 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,449 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,456 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,462 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,592 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,667 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,673 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,703 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,710 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,759 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,760 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,782 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:30,954 INFO L134 CoverageAnalysis]: Checked inductivity of 9930 backedges. 0 proven. 9930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:44:30,954 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769840679] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:44:30,954 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:44:30,955 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [110, 109] total 113 [2021-05-02 12:44:30,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281807408] [2021-05-02 12:44:30,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 113 states [2021-05-02 12:44:30,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:44:30,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-05-02 12:44:30,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5790, Invalid=6866, Unknown=0, NotChecked=0, Total=12656 [2021-05-02 12:44:30,956 INFO L87 Difference]: Start difference. First operand 10378 states and 10566 transitions. Second operand has 113 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 110 states have internal predecessors, (227), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:44:42,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:44:42,672 INFO L93 Difference]: Finished difference Result 10590 states and 10876 transitions. [2021-05-02 12:44:42,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2021-05-02 12:44:42,673 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 110 states have internal predecessors, (227), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 225 [2021-05-02 12:44:42,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:44:42,683 INFO L225 Difference]: With dead ends: 10590 [2021-05-02 12:44:42,683 INFO L226 Difference]: Without dead ends: 10383 [2021-05-02 12:44:42,686 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6717 ImplicationChecksByTransitivity, 15327.1ms TimeCoverageRelationStatistics Valid=17144, Invalid=31036, Unknown=0, NotChecked=0, Total=48180 [2021-05-02 12:44:42,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10383 states. [2021-05-02 12:44:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10383 to 10365. [2021-05-02 12:44:42,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10365 states, 10360 states have (on average 1.018050193050193) internal successors, (10547), 10360 states have internal predecessors, (10547), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:44:42,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10365 states to 10365 states and 10551 transitions. [2021-05-02 12:44:42,745 INFO L78 Accepts]: Start accepts. Automaton has 10365 states and 10551 transitions. Word has length 225 [2021-05-02 12:44:42,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:44:42,745 INFO L480 AbstractCegarLoop]: Abstraction has 10365 states and 10551 transitions. [2021-05-02 12:44:42,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 113 states, 113 states have (on average 2.0088495575221237) internal successors, (227), 110 states have internal predecessors, (227), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:44:42,746 INFO L276 IsEmpty]: Start isEmpty. Operand 10365 states and 10551 transitions. [2021-05-02 12:44:42,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-05-02 12:44:42,754 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:44:42,754 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:44:42,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable106 [2021-05-02 12:44:42,969 INFO L428 AbstractCegarLoop]: === Iteration 108 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:44:42,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:44:42,969 INFO L82 PathProgramCache]: Analyzing trace with hash -186694296, now seen corresponding path program 6 times [2021-05-02 12:44:42,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:44:42,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18564915] [2021-05-02 12:44:42,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:44:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:44:49,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:44:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:44:49,225 INFO L134 CoverageAnalysis]: Checked inductivity of 9942 backedges. 0 proven. 9942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:44:49,225 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:44:49,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18564915] [2021-05-02 12:44:49,225 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18564915] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:44:49,225 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411563965] [2021-05-02 12:44:49,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:44:49,476 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 100 check-sat command(s) [2021-05-02 12:44:49,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:44:49,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 112 conjunts are in the unsatisfiable core [2021-05-02 12:44:49,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:44:49,508 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,572 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,598 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,747 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:49,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,030 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,221 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:44:50,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9942 backedges. 0 proven. 9942 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:44:50,352 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411563965] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:44:50,352 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:44:50,352 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [111, 110] total 114 [2021-05-02 12:44:50,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042805636] [2021-05-02 12:44:50,352 INFO L460 AbstractCegarLoop]: Interpolant automaton has 114 states [2021-05-02 12:44:50,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:44:50,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2021-05-02 12:44:50,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5898, Invalid=6984, Unknown=0, NotChecked=0, Total=12882 [2021-05-02 12:44:50,354 INFO L87 Difference]: Start difference. First operand 10365 states and 10551 transitions. Second operand has 114 states, 114 states have (on average 2.008771929824561) internal successors, (229), 111 states have internal predecessors, (229), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:02,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:02,312 INFO L93 Difference]: Finished difference Result 10578 states and 10862 transitions. [2021-05-02 12:45:02,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2021-05-02 12:45:02,313 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.008771929824561) internal successors, (229), 111 states have internal predecessors, (229), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 227 [2021-05-02 12:45:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:02,321 INFO L225 Difference]: With dead ends: 10578 [2021-05-02 12:45:02,321 INFO L226 Difference]: Without dead ends: 10371 [2021-05-02 12:45:02,325 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6834 ImplicationChecksByTransitivity, 15770.7ms TimeCoverageRelationStatistics Valid=17466, Invalid=31596, Unknown=0, NotChecked=0, Total=49062 [2021-05-02 12:45:02,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10371 states. [2021-05-02 12:45:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10371 to 10350. [2021-05-02 12:45:02,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10350 states, 10345 states have (on average 1.0178830352827453) internal successors, (10530), 10345 states have internal predecessors, (10530), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:02,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10350 states to 10350 states and 10534 transitions. [2021-05-02 12:45:02,392 INFO L78 Accepts]: Start accepts. Automaton has 10350 states and 10534 transitions. Word has length 227 [2021-05-02 12:45:02,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:02,392 INFO L480 AbstractCegarLoop]: Abstraction has 10350 states and 10534 transitions. [2021-05-02 12:45:02,392 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 114 states, 114 states have (on average 2.008771929824561) internal successors, (229), 111 states have internal predecessors, (229), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:02,392 INFO L276 IsEmpty]: Start isEmpty. Operand 10350 states and 10534 transitions. [2021-05-02 12:45:02,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2021-05-02 12:45:02,400 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:02,400 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:02,612 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:02,613 INFO L428 AbstractCegarLoop]: === Iteration 109 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:02,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:02,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1721075027, now seen corresponding path program 7 times [2021-05-02 12:45:02,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:02,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126968180] [2021-05-02 12:45:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:09,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9956 backedges. 0 proven. 9956 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:09,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:09,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126968180] [2021-05-02 12:45:09,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126968180] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:09,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984068662] [2021-05-02 12:45:09,295 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:09,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 113 conjunts are in the unsatisfiable core [2021-05-02 12:45:09,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:09,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,663 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,817 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:09,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:10,361 INFO L134 CoverageAnalysis]: Checked inductivity of 9956 backedges. 0 proven. 9956 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:10,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984068662] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:10,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:10,361 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [112, 111] total 115 [2021-05-02 12:45:10,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482342647] [2021-05-02 12:45:10,362 INFO L460 AbstractCegarLoop]: Interpolant automaton has 115 states [2021-05-02 12:45:10,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:10,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2021-05-02 12:45:10,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6007, Invalid=7103, Unknown=0, NotChecked=0, Total=13110 [2021-05-02 12:45:10,363 INFO L87 Difference]: Start difference. First operand 10350 states and 10534 transitions. Second operand has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 112 states have internal predecessors, (231), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:22,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:22,908 INFO L93 Difference]: Finished difference Result 10564 states and 10846 transitions. [2021-05-02 12:45:22,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2021-05-02 12:45:22,910 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 112 states have internal predecessors, (231), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 229 [2021-05-02 12:45:22,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:22,918 INFO L225 Difference]: With dead ends: 10564 [2021-05-02 12:45:22,918 INFO L226 Difference]: Without dead ends: 10357 [2021-05-02 12:45:22,922 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6952 ImplicationChecksByTransitivity, 16758.8ms TimeCoverageRelationStatistics Valid=17791, Invalid=32161, Unknown=0, NotChecked=0, Total=49952 [2021-05-02 12:45:22,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10357 states. [2021-05-02 12:45:22,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10357 to 10333. [2021-05-02 12:45:23,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10333 states, 10328 states have (on average 1.0177188226181255) internal successors, (10511), 10328 states have internal predecessors, (10511), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10333 states to 10333 states and 10515 transitions. [2021-05-02 12:45:23,009 INFO L78 Accepts]: Start accepts. Automaton has 10333 states and 10515 transitions. Word has length 229 [2021-05-02 12:45:23,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:23,009 INFO L480 AbstractCegarLoop]: Abstraction has 10333 states and 10515 transitions. [2021-05-02 12:45:23,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 115 states, 115 states have (on average 2.008695652173913) internal successors, (231), 112 states have internal predecessors, (231), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 10333 states and 10515 transitions. [2021-05-02 12:45:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-05-02 12:45:23,017 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:23,017 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:23,236 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:23,237 INFO L428 AbstractCegarLoop]: === Iteration 110 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:23,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:23,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1207792306, now seen corresponding path program 8 times [2021-05-02 12:45:23,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:23,237 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880270952] [2021-05-02 12:45:23,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:23,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:30,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9972 backedges. 0 proven. 9972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:30,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:30,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880270952] [2021-05-02 12:45:30,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880270952] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:30,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006510528] [2021-05-02 12:45:30,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:30,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:45:30,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:30,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 921 conjuncts, 114 conjunts are in the unsatisfiable core [2021-05-02 12:45:30,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:30,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:30,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,114 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,137 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,254 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,259 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,282 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,287 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,294 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,323 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,407 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,460 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,465 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,473 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,479 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,495 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,509 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,511 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:31,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9972 backedges. 0 proven. 9972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:31,671 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006510528] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:31,672 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:31,672 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [113, 112] total 116 [2021-05-02 12:45:31,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560789283] [2021-05-02 12:45:31,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 116 states [2021-05-02 12:45:31,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:31,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2021-05-02 12:45:31,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6117, Invalid=7223, Unknown=0, NotChecked=0, Total=13340 [2021-05-02 12:45:31,674 INFO L87 Difference]: Start difference. First operand 10333 states and 10515 transitions. Second operand has 116 states, 116 states have (on average 2.0086206896551726) internal successors, (233), 113 states have internal predecessors, (233), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:49,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:45:49,111 INFO L93 Difference]: Finished difference Result 10548 states and 10828 transitions. [2021-05-02 12:45:49,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2021-05-02 12:45:49,112 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 116 states have (on average 2.0086206896551726) internal successors, (233), 113 states have internal predecessors, (233), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 231 [2021-05-02 12:45:49,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:45:49,120 INFO L225 Difference]: With dead ends: 10548 [2021-05-02 12:45:49,120 INFO L226 Difference]: Without dead ends: 10341 [2021-05-02 12:45:49,124 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7071 ImplicationChecksByTransitivity, 21621.1ms TimeCoverageRelationStatistics Valid=18119, Invalid=32731, Unknown=0, NotChecked=0, Total=50850 [2021-05-02 12:45:49,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10341 states. [2021-05-02 12:45:49,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10341 to 10314. [2021-05-02 12:45:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10314 states, 10309 states have (on average 1.0175574740517994) internal successors, (10490), 10309 states have internal predecessors, (10490), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:49,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10314 states to 10314 states and 10494 transitions. [2021-05-02 12:45:49,198 INFO L78 Accepts]: Start accepts. Automaton has 10314 states and 10494 transitions. Word has length 231 [2021-05-02 12:45:49,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:45:49,198 INFO L480 AbstractCegarLoop]: Abstraction has 10314 states and 10494 transitions. [2021-05-02 12:45:49,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 116 states, 116 states have (on average 2.0086206896551726) internal successors, (233), 113 states have internal predecessors, (233), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:45:49,199 INFO L276 IsEmpty]: Start isEmpty. Operand 10314 states and 10494 transitions. [2021-05-02 12:45:49,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-05-02 12:45:49,205 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:45:49,205 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:45:49,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:49,406 INFO L428 AbstractCegarLoop]: === Iteration 111 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:45:49,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:45:49,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1649246857, now seen corresponding path program 9 times [2021-05-02 12:45:49,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:45:49,406 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477251610] [2021-05-02 12:45:49,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:45:49,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:56,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:45:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:45:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9990 backedges. 0 proven. 9990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:56,907 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:45:56,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477251610] [2021-05-02 12:45:56,908 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477251610] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:56,908 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411928099] [2021-05-02 12:45:56,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:45:57,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 100 check-sat command(s) [2021-05-02 12:45:57,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:45:57,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 117 conjunts are in the unsatisfiable core [2021-05-02 12:45:57,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:45:57,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,197 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,295 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,440 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,459 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,499 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,505 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,569 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,590 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,650 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,659 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,666 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,672 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,674 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,758 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:57,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,019 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,021 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,028 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,109 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,139 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,182 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,188 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,198 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,253 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:45:58,417 INFO L134 CoverageAnalysis]: Checked inductivity of 9990 backedges. 0 proven. 9990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:45:58,418 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411928099] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:45:58,418 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:45:58,418 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [114, 114] total 118 [2021-05-02 12:45:58,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376959406] [2021-05-02 12:45:58,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 118 states [2021-05-02 12:45:58,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:45:58,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants. [2021-05-02 12:45:58,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6230, Invalid=7576, Unknown=0, NotChecked=0, Total=13806 [2021-05-02 12:45:58,420 INFO L87 Difference]: Start difference. First operand 10314 states and 10494 transitions. Second operand has 118 states, 118 states have (on average 2.0) internal successors, (236), 115 states have internal predecessors, (236), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:46:19,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:46:19,978 INFO L93 Difference]: Finished difference Result 10530 states and 10808 transitions. [2021-05-02 12:46:19,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2021-05-02 12:46:19,979 INFO L78 Accepts]: Start accepts. Automaton has has 118 states, 118 states have (on average 2.0) internal successors, (236), 115 states have internal predecessors, (236), 2 states have call successors, (5), 4 states have call predecessors, (5), 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 12:46:19,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:46:19,986 INFO L225 Difference]: With dead ends: 10530 [2021-05-02 12:46:19,986 INFO L226 Difference]: Without dead ends: 10323 [2021-05-02 12:46:19,989 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7302 ImplicationChecksByTransitivity, 25302.1ms TimeCoverageRelationStatistics Valid=18678, Invalid=33992, Unknown=0, NotChecked=0, Total=52670 [2021-05-02 12:46:19,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10323 states. [2021-05-02 12:46:20,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10323 to 10293. [2021-05-02 12:46:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10293 states, 10288 states have (on average 1.0173989113530326) internal successors, (10467), 10288 states have internal predecessors, (10467), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 12:46:20,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10293 states to 10293 states and 10471 transitions. [2021-05-02 12:46:20,040 INFO L78 Accepts]: Start accepts. Automaton has 10293 states and 10471 transitions. Word has length 233 [2021-05-02 12:46:20,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:46:20,040 INFO L480 AbstractCegarLoop]: Abstraction has 10293 states and 10471 transitions. [2021-05-02 12:46:20,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 118 states, 118 states have (on average 2.0) internal successors, (236), 115 states have internal predecessors, (236), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-02 12:46:20,040 INFO L276 IsEmpty]: Start isEmpty. Operand 10293 states and 10471 transitions. [2021-05-02 12:46:20,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-05-02 12:46:20,046 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:46:20,047 INFO L523 BasicCegarLoop]: trace histogram [100, 99, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:46:20,247 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110,110 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:46:20,247 INFO L428 AbstractCegarLoop]: === Iteration 112 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:46:20,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:46:20,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1515186940, now seen corresponding path program 10 times [2021-05-02 12:46:20,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:46:20,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266438427] [2021-05-02 12:46:20,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:46:20,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat