/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:37:27,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:37:27,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:37:27,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:37:27,713 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:37:27,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:37:27,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:37:27,717 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:37:27,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:37:27,720 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:37:27,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:37:27,722 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:37:27,722 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:37:27,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:37:27,724 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:37:27,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:37:27,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:37:27,726 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:37:27,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:37:27,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:37:27,731 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:37:27,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:37:27,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:37:27,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:37:27,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:37:27,736 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:37:27,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:37:27,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:37:27,738 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:37:27,739 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:37:27,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:37:27,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:37:27,740 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:37:27,741 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:37:27,742 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:37:27,742 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:37:27,743 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:37:27,743 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:37:27,743 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:37:27,744 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:37:27,745 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:37:27,746 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:37:27,768 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:37:27,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:37:27,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:37:27,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:37:27,770 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:37:27,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:37:27,770 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:37:27,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:37:27,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:37:27,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:37:27,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:37:27,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:37:27,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:37:27,771 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:37:27,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:37:27,772 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:37:27,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:37:27,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:37:27,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:37:27,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:37:27,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:37:27,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:37:27,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:37:27,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:37:27,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:37:27,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:37:27,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:37:27,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:37:27,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:37:27,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:37:28,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:37:28,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:37:28,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:37:28,108 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:37:28,109 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:37:28,109 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:37:28,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0db1798dc/d0a68f5575104907b03d4e4316bc370b/FLAG352215485 [2020-10-12 19:37:28,631 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:37:28,632 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:37:28,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0db1798dc/d0a68f5575104907b03d4e4316bc370b/FLAG352215485 [2020-10-12 19:37:28,960 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0db1798dc/d0a68f5575104907b03d4e4316bc370b [2020-10-12 19:37:28,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:37:28,971 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:37:28,974 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:37:28,974 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:37:28,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:37:28,978 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:37:28" (1/1) ... [2020-10-12 19:37:28,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57916dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:37:28, skipping insertion in model container [2020-10-12 19:37:28,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:37:28" (1/1) ... [2020-10-12 19:37:28,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:37:29,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:37:29,425 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:37:29,437 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:37:29,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:37:29,577 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:37:29,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:37:29 WrapperNode [2020-10-12 19:37:29,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:37:29,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:37:29,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:37:29,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:37:29,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:37:29" (1/1) ... [2020-10-12 19:37:29,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:37:29" (1/1) ... [2020-10-12 19:37:29,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:37:29" (1/1) ... [2020-10-12 19:37:29,601 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:37:29" (1/1) ... [2020-10-12 19:37:29,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:37:29" (1/1) ... [2020-10-12 19:37:29,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:37:29" (1/1) ... [2020-10-12 19:37:29,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:37:29" (1/1) ... [2020-10-12 19:37:29,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:37:29,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:37:29,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:37:29,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:37:29,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:37:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-12 19:37:29,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:37:29,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:37:29,702 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:37:29,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:37:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:37:29,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:37:29,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:37:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:37:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:37:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:37:29,704 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:37:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:37:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:37:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:37:29,705 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:37:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:37:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:37:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-12 19:37:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:37:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:37:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:37:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:37:29,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:37:30,429 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:37:30,430 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:37:30,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:37:30 BoogieIcfgContainer [2020-10-12 19:37:30,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:37:30,437 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:37:30,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:37:30,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:37:30,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:37:28" (1/3) ... [2020-10-12 19:37:30,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b8e5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:37:30, skipping insertion in model container [2020-10-12 19:37:30,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:37:29" (2/3) ... [2020-10-12 19:37:30,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10b8e5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:37:30, skipping insertion in model container [2020-10-12 19:37:30,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:37:30" (3/3) ... [2020-10-12 19:37:30,444 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:37:30,455 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:37:30,463 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:37:30,477 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:37:30,503 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:37:30,504 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:37:30,504 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:37:30,504 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:37:30,505 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:37:30,505 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:37:30,505 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:37:30,505 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:37:30,528 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-10-12 19:37:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-12 19:37:30,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:30,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:37:30,541 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:30,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:30,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1161095885, now seen corresponding path program 1 times [2020-10-12 19:37:30,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:30,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406130498] [2020-10-12 19:37:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:31,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:31,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:31,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:31,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:31,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:31,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:31,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:32,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:32,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:32,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:33,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:33,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:33,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:35,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:35,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-12 19:37:35,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:37:35,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 19:37:35,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:35,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:37:35,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:37:35,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 19:37:35,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 19:37:36,269 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:37:36,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:36,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:36,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:36,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:36,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:36,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 19:37:36,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:36,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:36,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:36,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:37:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:37:36,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406130498] [2020-10-12 19:37:36,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:36,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:37:36,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228730994] [2020-10-12 19:37:36,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:37:36,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:36,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:37:36,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:37:36,354 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 7 states. [2020-10-12 19:37:36,587 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 19:37:37,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:37,946 INFO L93 Difference]: Finished difference Result 794 states and 1292 transitions. [2020-10-12 19:37:37,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:37:37,948 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-10-12 19:37:37,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:37,968 INFO L225 Difference]: With dead ends: 794 [2020-10-12 19:37:37,968 INFO L226 Difference]: Without dead ends: 669 [2020-10-12 19:37:37,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:37:37,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-10-12 19:37:38,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 334. [2020-10-12 19:37:38,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-12 19:37:38,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 491 transitions. [2020-10-12 19:37:38,051 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 491 transitions. Word has length 79 [2020-10-12 19:37:38,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:38,052 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 491 transitions. [2020-10-12 19:37:38,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:37:38,052 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 491 transitions. [2020-10-12 19:37:38,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:37:38,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:38,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:37:38,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:37:38,056 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:38,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:38,057 INFO L82 PathProgramCache]: Analyzing trace with hash 733224331, now seen corresponding path program 1 times [2020-10-12 19:37:38,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:38,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432015384] [2020-10-12 19:37:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:38,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:38,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:38,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:38,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:38,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:38,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:43,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:43,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:43,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:43,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:37:43,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:37:43,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:37:43,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:37:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:37:43,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 19:37:43,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:43,328 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:37:43,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:43,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:43,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:43,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:43,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:43,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 19:37:43,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:43,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:37:43,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:37:43,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432015384] [2020-10-12 19:37:43,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:43,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:37:43,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377553616] [2020-10-12 19:37:43,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:37:43,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:43,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:37:43,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:37:43,382 INFO L87 Difference]: Start difference. First operand 334 states and 491 transitions. Second operand 7 states. [2020-10-12 19:37:43,652 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 19:37:44,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:44,894 INFO L93 Difference]: Finished difference Result 1753 states and 2731 transitions. [2020-10-12 19:37:44,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:37:44,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 80 [2020-10-12 19:37:44,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:44,903 INFO L225 Difference]: With dead ends: 1753 [2020-10-12 19:37:44,903 INFO L226 Difference]: Without dead ends: 1526 [2020-10-12 19:37:44,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:37:44,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1526 states. [2020-10-12 19:37:44,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1526 to 822. [2020-10-12 19:37:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-10-12 19:37:44,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1255 transitions. [2020-10-12 19:37:44,961 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1255 transitions. Word has length 80 [2020-10-12 19:37:44,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:44,962 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 1255 transitions. [2020-10-12 19:37:44,962 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:37:44,962 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1255 transitions. [2020-10-12 19:37:44,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 19:37:44,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:44,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:37:44,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:37:44,966 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:44,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:44,966 INFO L82 PathProgramCache]: Analyzing trace with hash -525841798, now seen corresponding path program 1 times [2020-10-12 19:37:44,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:44,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898713103] [2020-10-12 19:37:44,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:45,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:45,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:45,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:45,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:45,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:45,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:45,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:46,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:46,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:46,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:47,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:49,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:49,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 19:37:49,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:37:49,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:37:49,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:37:50,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:37:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 19:37:50,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:37:50,578 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:37:50,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:50,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:50,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:50,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:50,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:50,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:50,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:37:50,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:50,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:50,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:50,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:50,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:37:50,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898713103] [2020-10-12 19:37:50,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:50,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:37:50,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140625791] [2020-10-12 19:37:50,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:37:50,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:50,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:37:50,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:37:50,636 INFO L87 Difference]: Start difference. First operand 822 states and 1255 transitions. Second operand 12 states. [2020-10-12 19:37:50,903 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2020-10-12 19:37:54,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:54,131 INFO L93 Difference]: Finished difference Result 5144 states and 8042 transitions. [2020-10-12 19:37:54,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 19:37:54,132 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-12 19:37:54,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:54,154 INFO L225 Difference]: With dead ends: 5144 [2020-10-12 19:37:54,154 INFO L226 Difference]: Without dead ends: 4505 [2020-10-12 19:37:54,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 19:37:54,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4505 states. [2020-10-12 19:37:54,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4505 to 911. [2020-10-12 19:37:54,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 911 states. [2020-10-12 19:37:54,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1362 transitions. [2020-10-12 19:37:54,292 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1362 transitions. Word has length 80 [2020-10-12 19:37:54,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:54,293 INFO L479 AbstractCegarLoop]: Abstraction has 911 states and 1362 transitions. [2020-10-12 19:37:54,293 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:37:54,293 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1362 transitions. [2020-10-12 19:37:54,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:37:54,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:54,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:37:54,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:37:54,296 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:54,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:54,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1221516781, now seen corresponding path program 1 times [2020-10-12 19:37:54,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:54,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171337497] [2020-10-12 19:37:54,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:54,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:54,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:54,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:54,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:54,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:55,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:56,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:56,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:56,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:56,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:58,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:59,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:59,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:37:59,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:37:59,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:37:59,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:59,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:37:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:37:59,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 19:37:59,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:59,695 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:37:59,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:59,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:59,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:59,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:59,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:59,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:37:59,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:59,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:59,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:59,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:59,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:59,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:37:59,743 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171337497] [2020-10-12 19:37:59,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:59,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:37:59,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646109224] [2020-10-12 19:37:59,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:37:59,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:59,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:37:59,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:37:59,746 INFO L87 Difference]: Start difference. First operand 911 states and 1362 transitions. Second operand 12 states. [2020-10-12 19:37:59,958 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-12 19:38:04,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:04,544 INFO L93 Difference]: Finished difference Result 4383 states and 6851 transitions. [2020-10-12 19:38:04,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-12 19:38:04,545 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 81 [2020-10-12 19:38:04,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:04,580 INFO L225 Difference]: With dead ends: 4383 [2020-10-12 19:38:04,580 INFO L226 Difference]: Without dead ends: 3968 [2020-10-12 19:38:04,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 859 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=533, Invalid=2329, Unknown=0, NotChecked=0, Total=2862 [2020-10-12 19:38:04,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3968 states. [2020-10-12 19:38:04,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3968 to 920. [2020-10-12 19:38:04,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 920 states. [2020-10-12 19:38:04,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920 states to 920 states and 1368 transitions. [2020-10-12 19:38:04,801 INFO L78 Accepts]: Start accepts. Automaton has 920 states and 1368 transitions. Word has length 81 [2020-10-12 19:38:04,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:04,802 INFO L479 AbstractCegarLoop]: Abstraction has 920 states and 1368 transitions. [2020-10-12 19:38:04,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:38:04,802 INFO L276 IsEmpty]: Start isEmpty. Operand 920 states and 1368 transitions. [2020-10-12 19:38:04,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-12 19:38:04,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:04,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:38:04,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:38:04,804 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:04,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:04,805 INFO L82 PathProgramCache]: Analyzing trace with hash -881166426, now seen corresponding path program 1 times [2020-10-12 19:38:04,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:04,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217205654] [2020-10-12 19:38:04,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:04,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:04,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:04,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:04,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:04,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:05,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:05,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:07,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:07,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:07,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:09,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:09,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-12 19:38:09,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:38:09,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:38:09,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:09,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:38:09,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:38:09,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-12 19:38:09,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:10,034 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:38:10,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:38:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:10,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:10,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:10,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:38:10,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:38:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:38:10,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:38:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:38:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:38:10,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:38:10,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:38:10,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217205654] [2020-10-12 19:38:10,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:38:10,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:38:10,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806934808] [2020-10-12 19:38:10,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:38:10,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:38:10,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:38:10,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:38:10,084 INFO L87 Difference]: Start difference. First operand 920 states and 1368 transitions. Second operand 7 states. [2020-10-12 19:38:10,325 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 19:38:11,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:11,827 INFO L93 Difference]: Finished difference Result 2434 states and 3780 transitions. [2020-10-12 19:38:11,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:38:11,827 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 81 [2020-10-12 19:38:11,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:11,838 INFO L225 Difference]: With dead ends: 2434 [2020-10-12 19:38:11,838 INFO L226 Difference]: Without dead ends: 1813 [2020-10-12 19:38:11,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:38:11,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2020-10-12 19:38:11,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 795. [2020-10-12 19:38:11,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-10-12 19:38:11,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1181 transitions. [2020-10-12 19:38:11,954 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1181 transitions. Word has length 81 [2020-10-12 19:38:11,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:11,955 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1181 transitions. [2020-10-12 19:38:11,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:38:11,955 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1181 transitions. [2020-10-12 19:38:11,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-12 19:38:11,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:11,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:38:11,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:38:11,963 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:11,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:11,963 INFO L82 PathProgramCache]: Analyzing trace with hash 294036515, now seen corresponding path program 1 times [2020-10-12 19:38:11,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:11,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181160233] [2020-10-12 19:38:11,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:11,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:11,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:12,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:12,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:12,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:12,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:12,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:16,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:16,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-12 19:38:16,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:38:16,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:38:16,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:38:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:38:16,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-12 19:38:16,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:17,501 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:38:17,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:38:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:17,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:17,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:17,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:38:17,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:38:17,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:38:17,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:38:17,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:38:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:38:17,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:17,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:38:17,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181160233] [2020-10-12 19:38:17,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:38:17,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:38:17,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001287436] [2020-10-12 19:38:17,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:38:17,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:38:17,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:38:17,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:38:17,566 INFO L87 Difference]: Start difference. First operand 795 states and 1181 transitions. Second operand 12 states. [2020-10-12 19:38:17,851 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:38:21,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:21,816 INFO L93 Difference]: Finished difference Result 4139 states and 6461 transitions. [2020-10-12 19:38:21,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 19:38:21,816 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2020-10-12 19:38:21,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:21,834 INFO L225 Difference]: With dead ends: 4139 [2020-10-12 19:38:21,835 INFO L226 Difference]: Without dead ends: 3784 [2020-10-12 19:38:21,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=300, Invalid=1182, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 19:38:21,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3784 states. [2020-10-12 19:38:22,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3784 to 914. [2020-10-12 19:38:22,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-10-12 19:38:22,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1338 transitions. [2020-10-12 19:38:22,006 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1338 transitions. Word has length 82 [2020-10-12 19:38:22,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:22,007 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1338 transitions. [2020-10-12 19:38:22,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:38:22,007 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1338 transitions. [2020-10-12 19:38:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-12 19:38:22,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:22,009 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:38:22,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:38:22,009 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:22,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:22,010 INFO L82 PathProgramCache]: Analyzing trace with hash -747599149, now seen corresponding path program 1 times [2020-10-12 19:38:22,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:22,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919380308] [2020-10-12 19:38:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:22,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:22,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:22,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:22,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:22,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:22,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:25,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:25,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:25,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:27,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:27,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-12 19:38:27,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:38:27,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:38:27,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:38:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:38:27,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 19:38:27,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:27,213 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:38:27,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:38:27,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:27,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:27,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:27,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:38:27,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:38:27,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:38:27,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:38:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:38:27,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:38:27,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:27,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:38:27,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919380308] [2020-10-12 19:38:27,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:38:27,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:38:27,249 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29958758] [2020-10-12 19:38:27,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:38:27,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:38:27,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:38:27,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:38:27,251 INFO L87 Difference]: Start difference. First operand 914 states and 1338 transitions. Second operand 8 states. [2020-10-12 19:38:27,419 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-12 19:38:29,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:29,262 INFO L93 Difference]: Finished difference Result 6061 states and 9498 transitions. [2020-10-12 19:38:29,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:38:29,262 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-10-12 19:38:29,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:29,296 INFO L225 Difference]: With dead ends: 6061 [2020-10-12 19:38:29,297 INFO L226 Difference]: Without dead ends: 5597 [2020-10-12 19:38:29,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:38:29,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5597 states. [2020-10-12 19:38:29,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5597 to 1583. [2020-10-12 19:38:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1583 states. [2020-10-12 19:38:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2362 transitions. [2020-10-12 19:38:29,872 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2362 transitions. Word has length 83 [2020-10-12 19:38:29,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:29,873 INFO L479 AbstractCegarLoop]: Abstraction has 1583 states and 2362 transitions. [2020-10-12 19:38:29,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:38:29,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2362 transitions. [2020-10-12 19:38:29,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 19:38:29,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:29,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:38:29,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:38:29,877 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:29,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:29,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1202407344, now seen corresponding path program 1 times [2020-10-12 19:38:29,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:29,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44076019] [2020-10-12 19:38:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:29,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:29,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:30,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:30,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:30,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:30,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:32,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:32,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:32,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:32,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:33,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:33,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:34,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:34,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:34,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:34,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 19:38:34,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:38:34,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:38:34,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:38:34,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:38:34,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-12 19:38:34,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:35,278 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:38:35,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:38:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:35,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:35,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:35,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:38:35,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:38:35,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:38:35,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:38:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:38:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:38:35,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:38:35,321 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44076019] [2020-10-12 19:38:35,321 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:38:35,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:38:35,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576148528] [2020-10-12 19:38:35,322 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:38:35,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:38:35,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:38:35,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:38:35,323 INFO L87 Difference]: Start difference. First operand 1583 states and 2362 transitions. Second operand 14 states. [2020-10-12 19:38:35,548 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-12 19:38:42,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:42,601 INFO L93 Difference]: Finished difference Result 15724 states and 24724 transitions. [2020-10-12 19:38:42,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-12 19:38:42,601 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 84 [2020-10-12 19:38:42,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:42,645 INFO L225 Difference]: With dead ends: 15724 [2020-10-12 19:38:42,646 INFO L226 Difference]: Without dead ends: 14641 [2020-10-12 19:38:42,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=512, Invalid=2038, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 19:38:42,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14641 states. [2020-10-12 19:38:43,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14641 to 2562. [2020-10-12 19:38:43,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2562 states. [2020-10-12 19:38:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 3929 transitions. [2020-10-12 19:38:43,296 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 3929 transitions. Word has length 84 [2020-10-12 19:38:43,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:43,297 INFO L479 AbstractCegarLoop]: Abstraction has 2562 states and 3929 transitions. [2020-10-12 19:38:43,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:38:43,297 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 3929 transitions. [2020-10-12 19:38:43,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 19:38:43,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:43,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:38:43,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:38:43,300 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:43,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:43,301 INFO L82 PathProgramCache]: Analyzing trace with hash -2047015904, now seen corresponding path program 1 times [2020-10-12 19:38:43,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:43,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964902122] [2020-10-12 19:38:43,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:43,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:43,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:43,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:43,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:43,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:43,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:44,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:44,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:44,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:44,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:45,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:45,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:48,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:48,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 19:38:48,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:38:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:38:48,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:38:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:38:48,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 19:38:48,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:49,024 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:38:49,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:38:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:49,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:49,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:49,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:38:49,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:38:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:38:49,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:38:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:38:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:38:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:38:49,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964902122] [2020-10-12 19:38:49,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:38:49,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:38:49,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621767870] [2020-10-12 19:38:49,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:38:49,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:38:49,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:38:49,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:38:49,082 INFO L87 Difference]: Start difference. First operand 2562 states and 3929 transitions. Second operand 14 states. [2020-10-12 19:38:49,224 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-12 19:38:49,674 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 175 [2020-10-12 19:38:49,875 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-12 19:38:50,026 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-10-12 19:38:50,403 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-10-12 19:38:50,602 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2020-10-12 19:38:50,801 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2020-10-12 19:38:51,050 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-10-12 19:38:51,186 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2020-10-12 19:38:51,358 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-10-12 19:38:51,723 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2020-10-12 19:38:52,188 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2020-10-12 19:38:52,481 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-12 19:38:55,629 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2020-10-12 19:38:55,772 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-12 19:38:55,998 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-12 19:38:56,688 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2020-10-12 19:38:56,931 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-10-12 19:38:58,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:58,388 INFO L93 Difference]: Finished difference Result 14484 states and 22376 transitions. [2020-10-12 19:38:58,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 19:38:58,389 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 84 [2020-10-12 19:38:58,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:58,418 INFO L225 Difference]: With dead ends: 14484 [2020-10-12 19:38:58,418 INFO L226 Difference]: Without dead ends: 13984 [2020-10-12 19:38:58,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 455 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=398, Invalid=1494, Unknown=0, NotChecked=0, Total=1892 [2020-10-12 19:38:58,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13984 states. [2020-10-12 19:38:59,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13984 to 2610. [2020-10-12 19:38:59,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2610 states. [2020-10-12 19:38:59,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2610 states to 2610 states and 3991 transitions. [2020-10-12 19:38:59,172 INFO L78 Accepts]: Start accepts. Automaton has 2610 states and 3991 transitions. Word has length 84 [2020-10-12 19:38:59,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:59,173 INFO L479 AbstractCegarLoop]: Abstraction has 2610 states and 3991 transitions. [2020-10-12 19:38:59,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:38:59,173 INFO L276 IsEmpty]: Start isEmpty. Operand 2610 states and 3991 transitions. [2020-10-12 19:38:59,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 19:38:59,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:59,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:38:59,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:38:59,176 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:59,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:59,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1956039875, now seen corresponding path program 1 times [2020-10-12 19:38:59,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:59,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [214259346] [2020-10-12 19:38:59,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:59,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:59,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:59,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:59,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:59,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:00,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:00,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:00,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:00,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:00,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:02,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:02,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:04,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:04,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 19:39:04,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:39:04,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:39:04,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:39:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:39:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-12 19:39:04,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:04,589 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:39:04,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:04,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:04,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:04,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:04,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:04,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:39:04,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:04,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:39:04,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:04,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:39:04,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:04,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:39:04,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [214259346] [2020-10-12 19:39:04,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:04,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:39:04,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073733504] [2020-10-12 19:39:04,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:39:04,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:04,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:39:04,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:39:04,620 INFO L87 Difference]: Start difference. First operand 2610 states and 3991 transitions. Second operand 14 states. [2020-10-12 19:39:04,828 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-12 19:39:14,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:39:14,288 INFO L93 Difference]: Finished difference Result 15929 states and 24889 transitions. [2020-10-12 19:39:14,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-12 19:39:14,289 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 84 [2020-10-12 19:39:14,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:39:14,312 INFO L225 Difference]: With dead ends: 15929 [2020-10-12 19:39:14,312 INFO L226 Difference]: Without dead ends: 15429 [2020-10-12 19:39:14,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=617, Invalid=2689, Unknown=0, NotChecked=0, Total=3306 [2020-10-12 19:39:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15429 states. [2020-10-12 19:39:15,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15429 to 2652. [2020-10-12 19:39:15,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2652 states. [2020-10-12 19:39:15,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 4046 transitions. [2020-10-12 19:39:15,131 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 4046 transitions. Word has length 84 [2020-10-12 19:39:15,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:39:15,132 INFO L479 AbstractCegarLoop]: Abstraction has 2652 states and 4046 transitions. [2020-10-12 19:39:15,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:39:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 4046 transitions. [2020-10-12 19:39:15,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 19:39:15,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:15,135 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:39:15,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:39:15,135 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:15,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:15,136 INFO L82 PathProgramCache]: Analyzing trace with hash -319166016, now seen corresponding path program 1 times [2020-10-12 19:39:15,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:15,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741817852] [2020-10-12 19:39:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:15,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:15,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:15,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:15,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:15,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:15,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:15,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:15,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:16,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:16,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:20,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:20,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 19:39:20,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:39:20,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:39:20,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:39:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:39:20,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-12 19:39:20,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:20,568 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:39:20,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:20,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:20,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:20,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:20,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:20,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:39:20,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:39:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:20,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:39:20,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:39:20,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741817852] [2020-10-12 19:39:20,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:20,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:39:20,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037971614] [2020-10-12 19:39:20,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:39:20,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:20,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:39:20,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:39:20,596 INFO L87 Difference]: Start difference. First operand 2652 states and 4046 transitions. Second operand 14 states. [2020-10-12 19:39:20,781 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 139 [2020-10-12 19:39:26,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:39:26,751 INFO L93 Difference]: Finished difference Result 11447 states and 17793 transitions. [2020-10-12 19:39:26,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:39:26,752 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 84 [2020-10-12 19:39:26,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:39:26,770 INFO L225 Difference]: With dead ends: 11447 [2020-10-12 19:39:26,770 INFO L226 Difference]: Without dead ends: 10707 [2020-10-12 19:39:26,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=174, Invalid=638, Unknown=0, NotChecked=0, Total=812 [2020-10-12 19:39:26,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10707 states. [2020-10-12 19:39:27,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10707 to 2652. [2020-10-12 19:39:27,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2652 states. [2020-10-12 19:39:27,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 4043 transitions. [2020-10-12 19:39:27,524 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 4043 transitions. Word has length 84 [2020-10-12 19:39:27,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:39:27,525 INFO L479 AbstractCegarLoop]: Abstraction has 2652 states and 4043 transitions. [2020-10-12 19:39:27,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:39:27,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 4043 transitions. [2020-10-12 19:39:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 19:39:27,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:27,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:39:27,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:39:27,528 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:27,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:27,528 INFO L82 PathProgramCache]: Analyzing trace with hash 271390235, now seen corresponding path program 1 times [2020-10-12 19:39:27,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:27,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735279079] [2020-10-12 19:39:27,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:27,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:27,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:27,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:27,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:27,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:28,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:28,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:28,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:30,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:30,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:30,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:31,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:32,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:32,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:32,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 19:39:32,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:39:32,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:39:32,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:32,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:39:32,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:39:32,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 19:39:32,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:33,084 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 32 [2020-10-12 19:39:33,311 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:39:33,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:33,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:33,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:33,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:33,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:33,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:39:33,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:33,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:39:33,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:33,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:39:33,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:33,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:39:33,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735279079] [2020-10-12 19:39:33,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:33,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:39:33,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588590036] [2020-10-12 19:39:33,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:39:33,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:33,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:39:33,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:39:33,354 INFO L87 Difference]: Start difference. First operand 2652 states and 4043 transitions. Second operand 14 states. [2020-10-12 19:39:33,902 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 161 [2020-10-12 19:39:34,512 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-10-12 19:39:34,722 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2020-10-12 19:39:34,964 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2020-10-12 19:39:35,213 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-12 19:39:35,537 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-12 19:39:35,980 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-12 19:39:41,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:39:41,843 INFO L93 Difference]: Finished difference Result 12044 states and 18701 transitions. [2020-10-12 19:39:41,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:39:41,844 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 84 [2020-10-12 19:39:41,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:39:41,860 INFO L225 Difference]: With dead ends: 12044 [2020-10-12 19:39:41,860 INFO L226 Difference]: Without dead ends: 11304 [2020-10-12 19:39:41,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2020-10-12 19:39:41,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11304 states. [2020-10-12 19:39:42,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11304 to 2658. [2020-10-12 19:39:42,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2658 states. [2020-10-12 19:39:42,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 4052 transitions. [2020-10-12 19:39:42,711 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 4052 transitions. Word has length 84 [2020-10-12 19:39:42,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:39:42,712 INFO L479 AbstractCegarLoop]: Abstraction has 2658 states and 4052 transitions. [2020-10-12 19:39:42,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:39:42,712 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 4052 transitions. [2020-10-12 19:39:42,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-12 19:39:42,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:42,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:39:42,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:39:42,715 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:42,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:42,715 INFO L82 PathProgramCache]: Analyzing trace with hash 2054287948, now seen corresponding path program 1 times [2020-10-12 19:39:42,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:42,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564464412] [2020-10-12 19:39:42,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:42,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:42,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:42,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:42,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:42,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:43,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:43,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:43,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:43,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:44,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:44,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:45,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:45,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:45,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:46,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:47,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:47,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-12 19:39:47,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:39:47,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:39:47,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:39:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:39:47,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-12 19:39:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:48,153 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:39:48,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:39:48,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:48,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:48,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:39:48,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:39:48,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:39:48,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-12 19:39:48,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:39:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:39:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:39:48,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:39:48,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:39:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:39:48,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564464412] [2020-10-12 19:39:48,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:39:48,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:39:48,214 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433534717] [2020-10-12 19:39:48,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:39:48,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:39:48,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:39:48,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:39:48,215 INFO L87 Difference]: Start difference. First operand 2658 states and 4052 transitions. Second operand 16 states. [2020-10-12 19:39:48,482 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-12 19:39:54,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:39:54,900 INFO L93 Difference]: Finished difference Result 9135 states and 14150 transitions. [2020-10-12 19:39:54,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 19:39:54,902 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 84 [2020-10-12 19:39:54,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:39:54,909 INFO L225 Difference]: With dead ends: 9135 [2020-10-12 19:39:54,909 INFO L226 Difference]: Without dead ends: 6951 [2020-10-12 19:39:54,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 623 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=478, Invalid=1972, Unknown=0, NotChecked=0, Total=2450 [2020-10-12 19:39:54,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6951 states. [2020-10-12 19:39:55,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6951 to 2238. [2020-10-12 19:39:55,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2238 states. [2020-10-12 19:39:55,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 3410 transitions. [2020-10-12 19:39:55,835 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 3410 transitions. Word has length 84 [2020-10-12 19:39:55,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:39:55,836 INFO L479 AbstractCegarLoop]: Abstraction has 2238 states and 3410 transitions. [2020-10-12 19:39:55,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:39:55,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 3410 transitions. [2020-10-12 19:39:55,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 19:39:55,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:39:55,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:39:55,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:39:55,838 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:39:55,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:39:55,839 INFO L82 PathProgramCache]: Analyzing trace with hash -459028219, now seen corresponding path program 1 times [2020-10-12 19:39:55,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:39:55,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041164262] [2020-10-12 19:39:55,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:39:55,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:39:55,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:55,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:55,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:55,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:56,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:56,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:56,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:56,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:56,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:56,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:56,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:39:57,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:00,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:00,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 19:40:00,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:40:00,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:40:00,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:40:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:40:00,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:40:00,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:01,232 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:40:01,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:01,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:01,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:01,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:01,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:01,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:40:01,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:01,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:40:01,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:01,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:40:01,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:01,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:40:01,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041164262] [2020-10-12 19:40:01,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:01,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:40:01,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427147602] [2020-10-12 19:40:01,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:40:01,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:01,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:40:01,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:40:01,268 INFO L87 Difference]: Start difference. First operand 2238 states and 3410 transitions. Second operand 13 states. [2020-10-12 19:40:01,474 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-12 19:40:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:40:19,247 INFO L93 Difference]: Finished difference Result 32075 states and 50212 transitions. [2020-10-12 19:40:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-12 19:40:19,247 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 85 [2020-10-12 19:40:19,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:40:19,275 INFO L225 Difference]: With dead ends: 32075 [2020-10-12 19:40:19,276 INFO L226 Difference]: Without dead ends: 30441 [2020-10-12 19:40:19,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=539, Invalid=2011, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 19:40:19,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30441 states. [2020-10-12 19:40:20,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30441 to 3498. [2020-10-12 19:40:20,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3498 states. [2020-10-12 19:40:20,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 5374 transitions. [2020-10-12 19:40:20,482 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 5374 transitions. Word has length 85 [2020-10-12 19:40:20,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:40:20,483 INFO L479 AbstractCegarLoop]: Abstraction has 3498 states and 5374 transitions. [2020-10-12 19:40:20,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:40:20,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 5374 transitions. [2020-10-12 19:40:20,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 19:40:20,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:40:20,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:40:20,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:40:20,485 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:40:20,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:40:20,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1444247051, now seen corresponding path program 1 times [2020-10-12 19:40:20,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:40:20,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204151952] [2020-10-12 19:40:20,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:40:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:20,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:20,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:20,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:20,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:20,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:21,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:22,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:22,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:22,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:23,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:23,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:23,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:23,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:23,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:23,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:23,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:24,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:24,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:25,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:25,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:25,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:25,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:25,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 19:40:25,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 31 [2020-10-12 19:40:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:40:25,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 19:40:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 19:40:25,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 19:40:25,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:26,210 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:40:26,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:26,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:26,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:26,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:26,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:26,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:40:26,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:40:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:40:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:40:26,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204151952] [2020-10-12 19:40:26,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:26,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-12 19:40:26,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728183542] [2020-10-12 19:40:26,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 19:40:26,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:26,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 19:40:26,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-10-12 19:40:26,242 INFO L87 Difference]: Start difference. First operand 3498 states and 5374 transitions. Second operand 18 states. [2020-10-12 19:40:26,623 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 138 [2020-10-12 19:40:27,705 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-12 19:40:41,523 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-12 19:40:44,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:40:44,306 INFO L93 Difference]: Finished difference Result 26882 states and 41913 transitions. [2020-10-12 19:40:44,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-12 19:40:44,307 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 85 [2020-10-12 19:40:44,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:40:44,328 INFO L225 Difference]: With dead ends: 26882 [2020-10-12 19:40:44,329 INFO L226 Difference]: Without dead ends: 24160 [2020-10-12 19:40:44,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1806 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1052, Invalid=4648, Unknown=0, NotChecked=0, Total=5700 [2020-10-12 19:40:44,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24160 states. [2020-10-12 19:40:46,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24160 to 5252. [2020-10-12 19:40:46,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2020-10-12 19:40:46,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8065 transitions. [2020-10-12 19:40:46,243 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8065 transitions. Word has length 85 [2020-10-12 19:40:46,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:40:46,243 INFO L479 AbstractCegarLoop]: Abstraction has 5252 states and 8065 transitions. [2020-10-12 19:40:46,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 19:40:46,244 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8065 transitions. [2020-10-12 19:40:46,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 19:40:46,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:40:46,246 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:40:46,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:40:46,247 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:40:46,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:40:46,247 INFO L82 PathProgramCache]: Analyzing trace with hash 1109086353, now seen corresponding path program 1 times [2020-10-12 19:40:46,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:40:46,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114736706] [2020-10-12 19:40:46,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:40:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:46,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:46,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:46,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:46,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:46,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:46,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:48,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:48,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:51,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:51,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 19:40:51,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:40:51,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:40:51,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 19:40:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:40:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-12 19:40:51,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:40:51,576 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:40:51,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:40:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:40:51,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:40:51,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:40:51,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:40:51,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:40:51,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:40:51,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:40:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:40:51,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:40:51,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:40:51,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:40:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:40:51,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114736706] [2020-10-12 19:40:51,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:40:51,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-12 19:40:51,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396026941] [2020-10-12 19:40:51,652 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 19:40:51,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:40:51,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 19:40:51,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-12 19:40:51,653 INFO L87 Difference]: Start difference. First operand 5252 states and 8065 transitions. Second operand 8 states. [2020-10-12 19:40:51,985 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-12 19:41:01,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:01,255 INFO L93 Difference]: Finished difference Result 26586 states and 41657 transitions. [2020-10-12 19:41:01,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:41:01,256 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 85 [2020-10-12 19:41:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:01,277 INFO L225 Difference]: With dead ends: 26586 [2020-10-12 19:41:01,277 INFO L226 Difference]: Without dead ends: 22400 [2020-10-12 19:41:01,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:41:01,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22400 states. [2020-10-12 19:41:03,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22400 to 5252. [2020-10-12 19:41:03,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2020-10-12 19:41:03,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8029 transitions. [2020-10-12 19:41:03,249 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8029 transitions. Word has length 85 [2020-10-12 19:41:03,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:03,249 INFO L479 AbstractCegarLoop]: Abstraction has 5252 states and 8029 transitions. [2020-10-12 19:41:03,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 19:41:03,249 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8029 transitions. [2020-10-12 19:41:03,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 19:41:03,251 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:03,252 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:03,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:41:03,252 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:03,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:03,252 INFO L82 PathProgramCache]: Analyzing trace with hash 902187858, now seen corresponding path program 1 times [2020-10-12 19:41:03,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:03,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991022337] [2020-10-12 19:41:03,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:03,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:03,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:03,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:03,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:03,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:04,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:04,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:05,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:08,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:08,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-12 19:41:08,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:41:08,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:41:08,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:41:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:41:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 19:41:08,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:08,433 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-12 19:41:08,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:41:08,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:08,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:41:08,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:41:08,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:41:08,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:41:08,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:41:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:41:08,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:41:08,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:41:08,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:41:08,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:41:08,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991022337] [2020-10-12 19:41:08,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:41:08,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:41:08,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176910804] [2020-10-12 19:41:08,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:41:08,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:41:08,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:41:08,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:41:08,460 INFO L87 Difference]: Start difference. First operand 5252 states and 8029 transitions. Second operand 7 states. [2020-10-12 19:41:08,627 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-10-12 19:41:14,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:41:14,647 INFO L93 Difference]: Finished difference Result 14837 states and 22924 transitions. [2020-10-12 19:41:14,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:41:14,648 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 85 [2020-10-12 19:41:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:41:14,656 INFO L225 Difference]: With dead ends: 14837 [2020-10-12 19:41:14,656 INFO L226 Difference]: Without dead ends: 10661 [2020-10-12 19:41:14,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:41:14,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10661 states. [2020-10-12 19:41:17,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10661 to 6322. [2020-10-12 19:41:17,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6322 states. [2020-10-12 19:41:17,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6322 states to 6322 states and 9636 transitions. [2020-10-12 19:41:17,200 INFO L78 Accepts]: Start accepts. Automaton has 6322 states and 9636 transitions. Word has length 85 [2020-10-12 19:41:17,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:41:17,200 INFO L479 AbstractCegarLoop]: Abstraction has 6322 states and 9636 transitions. [2020-10-12 19:41:17,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:41:17,200 INFO L276 IsEmpty]: Start isEmpty. Operand 6322 states and 9636 transitions. [2020-10-12 19:41:17,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-12 19:41:17,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:41:17,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:41:17,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:41:17,203 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:41:17,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:41:17,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1465133733, now seen corresponding path program 1 times [2020-10-12 19:41:17,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:41:17,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564495505] [2020-10-12 19:41:17,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:41:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:41:17,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:17,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:17,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:17,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:17,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:17,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:17,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:41:17,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking...