/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.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:34:34,584 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:34:34,588 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:34:34,633 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:34:34,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:34:34,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:34:34,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:34:34,651 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:34:34,653 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:34:34,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:34:34,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:34:34,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:34:34,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:34:34,662 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:34:34,665 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:34:34,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:34:34,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:34:34,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:34:34,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:34:34,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:34:34,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:34:34,682 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:34:34,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:34:34,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:34:34,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:34:34,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:34:34,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:34:34,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:34:34,694 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:34:34,696 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:34:34,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:34:34,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:34:34,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:34:34,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:34:34,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:34:34,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:34:34,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:34:34,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:34:34,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:34:34,702 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:34:34,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:34:34,705 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 19:34:34,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:34:34,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:34:34,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:34:34,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:34:34,753 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:34:34,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:34:34,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:34:34,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:34:34,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:34:34,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:34:34,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:34:34,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:34:34,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:34:34,756 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:34:34,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:34:34,756 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:34:34,757 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:34:34,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:34:34,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:34:34,757 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:34:34,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:34:34,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:34:34,758 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:34:34,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:34:34,758 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:34:34,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:34:34,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:34:34,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:34:34,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:34:34,759 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 19:34:35,045 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:34:35,066 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:34:35,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:34:35,074 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:34:35,075 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:34:35,075 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:34:35,138 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61b14ad26/bbac1bc37abe48c581e3ab3e8d669201/FLAGcd289db94 [2020-10-12 19:34:35,674 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:34:35,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:34:35,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61b14ad26/bbac1bc37abe48c581e3ab3e8d669201/FLAGcd289db94 [2020-10-12 19:34:36,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/61b14ad26/bbac1bc37abe48c581e3ab3e8d669201 [2020-10-12 19:34:36,018 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:34:36,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:34:36,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:34:36,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:34:36,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:34:36,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:34:36" (1/1) ... [2020-10-12 19:34:36,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156d188 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:34:36, skipping insertion in model container [2020-10-12 19:34:36,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:34:36" (1/1) ... [2020-10-12 19:34:36,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:34:36,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:34:36,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:34:36,511 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:34:36,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:34:36,630 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:34:36,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:34:36 WrapperNode [2020-10-12 19:34:36,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:34:36,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:34:36,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:34:36,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:34:36,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:34:36" (1/1) ... [2020-10-12 19:34:36,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:34:36" (1/1) ... [2020-10-12 19:34:36,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:34:36" (1/1) ... [2020-10-12 19:34:36,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:34:36" (1/1) ... [2020-10-12 19:34:36,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:34:36" (1/1) ... [2020-10-12 19:34:36,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:34:36" (1/1) ... [2020-10-12 19:34:36,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:34:36" (1/1) ... [2020-10-12 19:34:36,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:34:36,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:34:36,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:34:36,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:34:36,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:34:36" (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 19:34:36,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:34:36,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:34:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:34:36,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:34:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:34:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:34:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:34:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-12 19:34:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:34:36,748 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:34:36,749 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:34:36,749 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:34:36,749 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:34:36,749 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:34:36,749 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:34:36,749 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:34:36,750 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-12 19:34:36,750 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:34:36,750 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:34:36,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:34:36,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:34:36,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:34:37,453 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:34:37,453 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:34:37,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:34:37 BoogieIcfgContainer [2020-10-12 19:34:37,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:34:37,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:34:37,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:34:37,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:34:37,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:34:36" (1/3) ... [2020-10-12 19:34:37,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d00daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:34:37, skipping insertion in model container [2020-10-12 19:34:37,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:34:36" (2/3) ... [2020-10-12 19:34:37,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43d00daa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:34:37, skipping insertion in model container [2020-10-12 19:34:37,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:34:37" (3/3) ... [2020-10-12 19:34:37,469 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-12 19:34:37,480 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:34:37,488 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 19:34:37,504 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 19:34:37,531 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:34:37,531 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:34:37,531 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:34:37,532 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:34:37,532 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:34:37,532 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:34:37,532 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:34:37,532 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:34:37,556 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states. [2020-10-12 19:34:37,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-12 19:34:37,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:37,567 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] [2020-10-12 19:34:37,568 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:37,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1081400223, now seen corresponding path program 1 times [2020-10-12 19:34:37,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:37,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647568262] [2020-10-12 19:34:37,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:38,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:38,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:38,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:38,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:38,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:38,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:39,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:39,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:42,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:42,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-12 19:34:42,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:34:42,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 19:34:42,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:42,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:34:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:34:42,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 19:34:42,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 19:34:43,259 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-12 19:34:43,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:43,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:43,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:43,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:43,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:43,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 19:34:43,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:34:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:34:43,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:43,324 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 19:34:43,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647568262] [2020-10-12 19:34:43,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:43,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:34:43,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646290243] [2020-10-12 19:34:43,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:34:43,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:43,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:34:43,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:34:43,356 INFO L87 Difference]: Start difference. First operand 128 states. Second operand 7 states. [2020-10-12 19:34:43,584 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-12 19:34:45,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:45,145 INFO L93 Difference]: Finished difference Result 649 states and 1041 transitions. [2020-10-12 19:34:45,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:34:45,147 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-10-12 19:34:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:45,168 INFO L225 Difference]: With dead ends: 649 [2020-10-12 19:34:45,168 INFO L226 Difference]: Without dead ends: 542 [2020-10-12 19:34:45,173 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 19:34:45,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2020-10-12 19:34:45,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 267. [2020-10-12 19:34:45,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-10-12 19:34:45,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 391 transitions. [2020-10-12 19:34:45,253 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 391 transitions. Word has length 65 [2020-10-12 19:34:45,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:45,253 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 391 transitions. [2020-10-12 19:34:45,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:34:45,254 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 391 transitions. [2020-10-12 19:34:45,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-12 19:34:45,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:45,257 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] [2020-10-12 19:34:45,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:34:45,258 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:45,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:45,258 INFO L82 PathProgramCache]: Analyzing trace with hash 377013792, now seen corresponding path program 1 times [2020-10-12 19:34:45,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:45,259 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249396815] [2020-10-12 19:34:45,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:45,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:45,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:45,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:45,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:46,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:46,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:46,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:46,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:47,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:48,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:50,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:50,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 19:34:50,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:34:50,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 19:34:50,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:50,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:34:50,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:34:50,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 19:34:50,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-12 19:34:51,026 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 18 [2020-10-12 19:34:51,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:34:51,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:51,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:51,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:34:51,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:34:51,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:34:51,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:34:51,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:34:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:34:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:34:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:34:51,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:34:51,248 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 19:34:51,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249396815] [2020-10-12 19:34:51,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:34:51,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:34:51,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250900055] [2020-10-12 19:34:51,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:34:51,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:34:51,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:34:51,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:34:51,254 INFO L87 Difference]: Start difference. First operand 267 states and 391 transitions. Second operand 12 states. [2020-10-12 19:34:51,721 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 138 [2020-10-12 19:34:52,367 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2020-10-12 19:34:52,519 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-12 19:34:52,733 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-12 19:34:53,046 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 40 [2020-10-12 19:34:53,292 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2020-10-12 19:34:55,091 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2020-10-12 19:34:56,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:34:56,991 INFO L93 Difference]: Finished difference Result 2973 states and 4629 transitions. [2020-10-12 19:34:56,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-12 19:34:56,991 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-10-12 19:34:56,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:34:57,018 INFO L225 Difference]: With dead ends: 2973 [2020-10-12 19:34:57,019 INFO L226 Difference]: Without dead ends: 2776 [2020-10-12 19:34:57,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 854 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=498, Invalid=2364, Unknown=0, NotChecked=0, Total=2862 [2020-10-12 19:34:57,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2020-10-12 19:34:57,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 619. [2020-10-12 19:34:57,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 619 states. [2020-10-12 19:34:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 933 transitions. [2020-10-12 19:34:57,184 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 933 transitions. Word has length 66 [2020-10-12 19:34:57,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:34:57,184 INFO L479 AbstractCegarLoop]: Abstraction has 619 states and 933 transitions. [2020-10-12 19:34:57,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:34:57,184 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 933 transitions. [2020-10-12 19:34:57,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 19:34:57,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:34:57,195 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] [2020-10-12 19:34:57,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:34:57,196 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:34:57,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:34:57,196 INFO L82 PathProgramCache]: Analyzing trace with hash -318482416, now seen corresponding path program 1 times [2020-10-12 19:34:57,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:34:57,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1888115178] [2020-10-12 19:34:57,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:34:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:34:57,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:57,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:57,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:57,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:57,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:57,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:57,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:57,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:58,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:59,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:34:59,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:02,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:02,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 19:35:02,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:35:02,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:35:02,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:02,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:35:02,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:35:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:35:02,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:02,753 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-12 19:35:02,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:02,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:02,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:02,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:02,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:02,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-12 19:35:02,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:02,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:35:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:35:02,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:02,807 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 19:35:02,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1888115178] [2020-10-12 19:35:02,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:02,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:35:02,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732476957] [2020-10-12 19:35:02,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:35:02,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:02,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:35:02,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:35:02,809 INFO L87 Difference]: Start difference. First operand 619 states and 933 transitions. Second operand 12 states. [2020-10-12 19:35:03,227 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 135 [2020-10-12 19:35:05,474 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-12 19:35:07,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:35:07,071 INFO L93 Difference]: Finished difference Result 3857 states and 5987 transitions. [2020-10-12 19:35:07,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 19:35:07,071 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-10-12 19:35:07,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:35:07,088 INFO L225 Difference]: With dead ends: 3857 [2020-10-12 19:35:07,089 INFO L226 Difference]: Without dead ends: 3414 [2020-10-12 19:35:07,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=269, Invalid=1063, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 19:35:07,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2020-10-12 19:35:07,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 660. [2020-10-12 19:35:07,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 660 states. [2020-10-12 19:35:07,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 981 transitions. [2020-10-12 19:35:07,204 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 981 transitions. Word has length 67 [2020-10-12 19:35:07,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:35:07,205 INFO L479 AbstractCegarLoop]: Abstraction has 660 states and 981 transitions. [2020-10-12 19:35:07,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:35:07,205 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 981 transitions. [2020-10-12 19:35:07,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-12 19:35:07,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:35:07,207 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] [2020-10-12 19:35:07,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:35:07,207 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:35:07,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:35:07,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1628313462, now seen corresponding path program 1 times [2020-10-12 19:35:07,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:35:07,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151460689] [2020-10-12 19:35:07,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:35:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:07,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:07,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:07,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:07,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:07,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:09,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:09,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:09,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:12,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:12,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-12 19:35:12,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-12 19:35:12,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:35:12,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:12,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:35:12,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:35:12,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-12 19:35:12,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:35:12,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:12,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:12,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:12,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:12,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:12,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:35:12,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:35:12,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:12,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:35:12,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:12,395 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 19:35:12,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151460689] [2020-10-12 19:35:12,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:12,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:35:12,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52722526] [2020-10-12 19:35:12,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:35:12,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:12,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:35:12,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:35:12,397 INFO L87 Difference]: Start difference. First operand 660 states and 981 transitions. Second operand 7 states. [2020-10-12 19:35:12,563 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-12 19:35:13,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:35:13,958 INFO L93 Difference]: Finished difference Result 2976 states and 4675 transitions. [2020-10-12 19:35:13,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:35:13,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 67 [2020-10-12 19:35:13,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:35:13,970 INFO L225 Difference]: With dead ends: 2976 [2020-10-12 19:35:13,970 INFO L226 Difference]: Without dead ends: 2494 [2020-10-12 19:35:13,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:35:13,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2494 states. [2020-10-12 19:35:14,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2494 to 863. [2020-10-12 19:35:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-10-12 19:35:14,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1311 transitions. [2020-10-12 19:35:14,095 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1311 transitions. Word has length 67 [2020-10-12 19:35:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:35:14,096 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 1311 transitions. [2020-10-12 19:35:14,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:35:14,096 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1311 transitions. [2020-10-12 19:35:14,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:35:14,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:35:14,098 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] [2020-10-12 19:35:14,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:35:14,098 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:35:14,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:35:14,099 INFO L82 PathProgramCache]: Analyzing trace with hash 886410110, now seen corresponding path program 1 times [2020-10-12 19:35:14,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:35:14,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752782671] [2020-10-12 19:35:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:35:14,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:14,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:14,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:14,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:14,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:14,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:14,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:15,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:17,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:19,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:19,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:35:19,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 19:35:19,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:35:19,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:19,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:35:19,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:35:19,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 19:35:19,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:19,397 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 27 [2020-10-12 19:35:19,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:19,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:19,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:19,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:19,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:19,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 19:35:19,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:19,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:35:19,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:19,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:35:19,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:19,757 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 19:35:19,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752782671] [2020-10-12 19:35:19,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:19,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:35:19,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886905517] [2020-10-12 19:35:19,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:35:19,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:19,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:35:19,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:35:19,760 INFO L87 Difference]: Start difference. First operand 863 states and 1311 transitions. Second operand 15 states. [2020-10-12 19:35:19,947 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-12 19:35:23,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:35:23,936 INFO L93 Difference]: Finished difference Result 3374 states and 5267 transitions. [2020-10-12 19:35:23,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 19:35:23,937 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-10-12 19:35:23,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:35:23,962 INFO L225 Difference]: With dead ends: 3374 [2020-10-12 19:35:23,963 INFO L226 Difference]: Without dead ends: 2755 [2020-10-12 19:35:23,967 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=211, Invalid=1049, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 19:35:23,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2755 states. [2020-10-12 19:35:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2755 to 890. [2020-10-12 19:35:24,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 890 states. [2020-10-12 19:35:24,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 890 states to 890 states and 1343 transitions. [2020-10-12 19:35:24,159 INFO L78 Accepts]: Start accepts. Automaton has 890 states and 1343 transitions. Word has length 68 [2020-10-12 19:35:24,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:35:24,160 INFO L479 AbstractCegarLoop]: Abstraction has 890 states and 1343 transitions. [2020-10-12 19:35:24,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:35:24,160 INFO L276 IsEmpty]: Start isEmpty. Operand 890 states and 1343 transitions. [2020-10-12 19:35:24,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:35:24,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:35:24,162 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] [2020-10-12 19:35:24,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:35:24,162 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:35:24,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:35:24,163 INFO L82 PathProgramCache]: Analyzing trace with hash 481407964, now seen corresponding path program 1 times [2020-10-12 19:35:24,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:35:24,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563448727] [2020-10-12 19:35:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:35:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:24,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:24,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:24,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:24,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:24,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:25,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:25,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:28,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:28,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:28,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:29,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:29,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:35:29,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:35:29,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:35:29,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:35:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:35:29,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 19:35:29,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:29,612 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-12 19:35:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:29,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:29,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:29,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:29,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:29,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:35:29,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:35:29,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:29,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:35:29,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:35:29,673 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 19:35:29,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563448727] [2020-10-12 19:35:29,675 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:29,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:35:29,676 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99493367] [2020-10-12 19:35:29,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:35:29,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:29,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:35:29,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:35:29,681 INFO L87 Difference]: Start difference. First operand 890 states and 1343 transitions. Second operand 11 states. [2020-10-12 19:35:29,948 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-12 19:35:33,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:35:33,026 INFO L93 Difference]: Finished difference Result 4937 states and 7731 transitions. [2020-10-12 19:35:33,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 19:35:33,026 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-10-12 19:35:33,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:35:33,047 INFO L225 Difference]: With dead ends: 4937 [2020-10-12 19:35:33,048 INFO L226 Difference]: Without dead ends: 4589 [2020-10-12 19:35:33,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=217, Invalid=775, Unknown=0, NotChecked=0, Total=992 [2020-10-12 19:35:33,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4589 states. [2020-10-12 19:35:33,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4589 to 900. [2020-10-12 19:35:33,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2020-10-12 19:35:33,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1352 transitions. [2020-10-12 19:35:33,255 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1352 transitions. Word has length 68 [2020-10-12 19:35:33,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:35:33,255 INFO L479 AbstractCegarLoop]: Abstraction has 900 states and 1352 transitions. [2020-10-12 19:35:33,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:35:33,255 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1352 transitions. [2020-10-12 19:35:33,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:35:33,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:35:33,257 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] [2020-10-12 19:35:33,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:35:33,259 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:35:33,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:35:33,259 INFO L82 PathProgramCache]: Analyzing trace with hash 2038558688, now seen corresponding path program 1 times [2020-10-12 19:35:33,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:35:33,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915266730] [2020-10-12 19:35:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:35:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:33,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:33,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:33,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:33,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:33,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:33,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:33,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:35,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:38,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:38,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:38,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:38,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:38,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:38,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:38,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:38,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:35:38,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:35:38,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:35:38,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:38,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:35:38,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:35:38,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:35:38,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:38,730 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 47 [2020-10-12 19:35:39,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:39,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:39,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:39,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:39,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:39,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:35:39,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:35:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:39,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:35:39,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:39,231 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 19:35:39,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915266730] [2020-10-12 19:35:39,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:39,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:35:39,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185457852] [2020-10-12 19:35:39,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:35:39,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:39,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:35:39,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:35:39,234 INFO L87 Difference]: Start difference. First operand 900 states and 1352 transitions. Second operand 14 states. [2020-10-12 19:35:39,426 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-12 19:35:39,854 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-12 19:35:40,110 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-10-12 19:35:40,515 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2020-10-12 19:35:40,694 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-12 19:35:40,881 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-12 19:35:41,067 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2020-10-12 19:35:41,243 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2020-10-12 19:35:41,399 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-12 19:35:41,621 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2020-10-12 19:35:41,809 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2020-10-12 19:35:44,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:35:44,650 INFO L93 Difference]: Finished difference Result 4331 states and 6788 transitions. [2020-10-12 19:35:44,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 19:35:44,650 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 68 [2020-10-12 19:35:44,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:35:44,668 INFO L225 Difference]: With dead ends: 4331 [2020-10-12 19:35:44,668 INFO L226 Difference]: Without dead ends: 4017 [2020-10-12 19:35:44,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=200, Invalid=856, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 19:35:44,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4017 states. [2020-10-12 19:35:44,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4017 to 900. [2020-10-12 19:35:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2020-10-12 19:35:44,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1352 transitions. [2020-10-12 19:35:44,854 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1352 transitions. Word has length 68 [2020-10-12 19:35:44,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:35:44,855 INFO L479 AbstractCegarLoop]: Abstraction has 900 states and 1352 transitions. [2020-10-12 19:35:44,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:35:44,855 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1352 transitions. [2020-10-12 19:35:44,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 19:35:44,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:35:44,856 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] [2020-10-12 19:35:44,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:35:44,857 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:35:44,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:35:44,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1403312152, now seen corresponding path program 1 times [2020-10-12 19:35:44,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:35:44,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110801305] [2020-10-12 19:35:44,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:35:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:44,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:44,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:45,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:45,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:45,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:45,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:45,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:45,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:45,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:45,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:45,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:45,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:46,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:49,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:49,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 19:35:49,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:35:49,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:35:49,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:35:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-12 19:35:49,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 19:35:49,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:50,087 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 26 [2020-10-12 19:35:50,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:50,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:50,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:50,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:50,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:50,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:35:50,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:50,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:35:50,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:50,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:35:50,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:50,332 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 19:35:50,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110801305] [2020-10-12 19:35:50,333 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:35:50,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:35:50,333 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211884587] [2020-10-12 19:35:50,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:35:50,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:35:50,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:35:50,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:35:50,334 INFO L87 Difference]: Start difference. First operand 900 states and 1352 transitions. Second operand 15 states. [2020-10-12 19:35:50,527 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 19:35:54,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:35:54,300 INFO L93 Difference]: Finished difference Result 3421 states and 5282 transitions. [2020-10-12 19:35:54,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 19:35:54,300 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 68 [2020-10-12 19:35:54,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:35:54,312 INFO L225 Difference]: With dead ends: 3421 [2020-10-12 19:35:54,312 INFO L226 Difference]: Without dead ends: 2820 [2020-10-12 19:35:54,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=296, Invalid=1264, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 19:35:54,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2020-10-12 19:35:54,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 912. [2020-10-12 19:35:54,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 912 states. [2020-10-12 19:35:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1360 transitions. [2020-10-12 19:35:54,494 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1360 transitions. Word has length 68 [2020-10-12 19:35:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:35:54,494 INFO L479 AbstractCegarLoop]: Abstraction has 912 states and 1360 transitions. [2020-10-12 19:35:54,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:35:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1360 transitions. [2020-10-12 19:35:54,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 19:35:54,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:35:54,496 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] [2020-10-12 19:35:54,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:35:54,497 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:35:54,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:35:54,497 INFO L82 PathProgramCache]: Analyzing trace with hash -2077521906, now seen corresponding path program 1 times [2020-10-12 19:35:54,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:35:54,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218833446] [2020-10-12 19:35:54,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:35:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:54,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:54,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:54,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:54,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:54,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:54,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:55,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:55,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:55,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:55,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:55,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:55,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:55,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:59,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:59,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 19:35:59,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:35:59,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:35:59,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:35:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 19:35:59,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:35:59,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:35:59,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:35:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:35:59,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:35:59,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:35:59,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:35:59,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:35:59,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:35:59,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:35:59,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:35:59,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:35:59,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:35:59,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:00,001 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 19:36:00,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218833446] [2020-10-12 19:36:00,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:00,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-12 19:36:00,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809402080] [2020-10-12 19:36:00,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:36:00,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:00,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:36:00,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:36:00,002 INFO L87 Difference]: Start difference. First operand 912 states and 1360 transitions. Second operand 15 states. [2020-10-12 19:36:00,399 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 130 [2020-10-12 19:36:00,988 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-12 19:36:01,133 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-12 19:36:01,370 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-12 19:36:04,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:04,710 INFO L93 Difference]: Finished difference Result 3407 states and 5251 transitions. [2020-10-12 19:36:04,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 19:36:04,710 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2020-10-12 19:36:04,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:04,723 INFO L225 Difference]: With dead ends: 3407 [2020-10-12 19:36:04,724 INFO L226 Difference]: Without dead ends: 2794 [2020-10-12 19:36:04,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=294, Invalid=1266, Unknown=0, NotChecked=0, Total=1560 [2020-10-12 19:36:04,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2794 states. [2020-10-12 19:36:04,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2794 to 909. [2020-10-12 19:36:04,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 909 states. [2020-10-12 19:36:04,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1356 transitions. [2020-10-12 19:36:04,944 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1356 transitions. Word has length 69 [2020-10-12 19:36:04,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:04,944 INFO L479 AbstractCegarLoop]: Abstraction has 909 states and 1356 transitions. [2020-10-12 19:36:04,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:36:04,944 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1356 transitions. [2020-10-12 19:36:04,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-12 19:36:04,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:04,946 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] [2020-10-12 19:36:04,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:36:04,946 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:04,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:04,947 INFO L82 PathProgramCache]: Analyzing trace with hash 940828710, now seen corresponding path program 1 times [2020-10-12 19:36:04,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:04,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650006562] [2020-10-12 19:36:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:04,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:05,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:05,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:05,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:05,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:05,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:06,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:06,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-12 19:36:06,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:36:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1288 [2020-10-12 19:36:06,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:06,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 19:36:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 19:36:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 19:36:06,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:06,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:06,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:06,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:06,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:06,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:06,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:36:06,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:36:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:06,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:36:06,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:06,409 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 19:36:06,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650006562] [2020-10-12 19:36:06,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:06,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-12 19:36:06,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230560340] [2020-10-12 19:36:06,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 19:36:06,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:06,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 19:36:06,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-12 19:36:06,411 INFO L87 Difference]: Start difference. First operand 909 states and 1356 transitions. Second operand 7 states. [2020-10-12 19:36:06,562 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-12 19:36:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:08,968 INFO L93 Difference]: Finished difference Result 5921 states and 9323 transitions. [2020-10-12 19:36:08,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 19:36:08,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-10-12 19:36:08,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:08,979 INFO L225 Difference]: With dead ends: 5921 [2020-10-12 19:36:08,979 INFO L226 Difference]: Without dead ends: 5328 [2020-10-12 19:36:08,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:36:08,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2020-10-12 19:36:09,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 1637. [2020-10-12 19:36:09,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2020-10-12 19:36:09,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2476 transitions. [2020-10-12 19:36:09,340 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2476 transitions. Word has length 69 [2020-10-12 19:36:09,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:09,340 INFO L479 AbstractCegarLoop]: Abstraction has 1637 states and 2476 transitions. [2020-10-12 19:36:09,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 19:36:09,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2476 transitions. [2020-10-12 19:36:09,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 19:36:09,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:09,342 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] [2020-10-12 19:36:09,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:36:09,343 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:09,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:09,343 INFO L82 PathProgramCache]: Analyzing trace with hash 287094991, now seen corresponding path program 1 times [2020-10-12 19:36:09,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:09,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557314453] [2020-10-12 19:36:09,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:09,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:09,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:09,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:10,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:14,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:14,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 19:36:14,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:36:14,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 19:36:14,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 19:36:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:36:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-12 19:36:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:14,544 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-12 19:36:14,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:14,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:14,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:14,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:14,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:14,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:36:14,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:36:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:14,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:36:14,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:14,699 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 19:36:14,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557314453] [2020-10-12 19:36:14,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:14,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:36:14,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499737149] [2020-10-12 19:36:14,701 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 19:36:14,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:14,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 19:36:14,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-12 19:36:14,702 INFO L87 Difference]: Start difference. First operand 1637 states and 2476 transitions. Second operand 9 states. [2020-10-12 19:36:14,840 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-12 19:36:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:17,020 INFO L93 Difference]: Finished difference Result 5474 states and 8490 transitions. [2020-10-12 19:36:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 19:36:17,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-10-12 19:36:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:17,030 INFO L225 Difference]: With dead ends: 5474 [2020-10-12 19:36:17,031 INFO L226 Difference]: Without dead ends: 4820 [2020-10-12 19:36:17,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:36:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4820 states. [2020-10-12 19:36:17,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4820 to 1615. [2020-10-12 19:36:17,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1615 states. [2020-10-12 19:36:17,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2443 transitions. [2020-10-12 19:36:17,523 INFO L78 Accepts]: Start accepts. Automaton has 1615 states and 2443 transitions. Word has length 70 [2020-10-12 19:36:17,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:17,524 INFO L479 AbstractCegarLoop]: Abstraction has 1615 states and 2443 transitions. [2020-10-12 19:36:17,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 19:36:17,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1615 states and 2443 transitions. [2020-10-12 19:36:17,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 19:36:17,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:17,525 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] [2020-10-12 19:36:17,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:36:17,525 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:17,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:17,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1406824686, now seen corresponding path program 1 times [2020-10-12 19:36:17,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:17,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027486261] [2020-10-12 19:36:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:17,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:17,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:17,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:17,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:17,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:17,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:18,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:18,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:18,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:18,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:18,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:18,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:22,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:22,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 19:36:22,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:36:22,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:36:22,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:22,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:36:22,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 19:36:22,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:36:22,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:22,856 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2020-10-12 19:36:23,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:23,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:23,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:23,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:23,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:23,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:36:23,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:36:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:23,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:36:23,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:23,163 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 19:36:23,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027486261] [2020-10-12 19:36:23,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:23,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:36:23,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721000792] [2020-10-12 19:36:23,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:36:23,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:23,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:36:23,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:36:23,165 INFO L87 Difference]: Start difference. First operand 1615 states and 2443 transitions. Second operand 16 states. [2020-10-12 19:36:23,553 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 124 [2020-10-12 19:36:23,911 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2020-10-12 19:36:24,079 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2020-10-12 19:36:24,279 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 57 [2020-10-12 19:36:24,501 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-10-12 19:36:24,753 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-12 19:36:24,954 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2020-10-12 19:36:25,695 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2020-10-12 19:36:29,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:29,985 INFO L93 Difference]: Finished difference Result 6989 states and 10825 transitions. [2020-10-12 19:36:29,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:36:29,986 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-10-12 19:36:29,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:29,999 INFO L225 Difference]: With dead ends: 6989 [2020-10-12 19:36:29,999 INFO L226 Difference]: Without dead ends: 6777 [2020-10-12 19:36:30,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=208, Invalid=848, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 19:36:30,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6777 states. [2020-10-12 19:36:30,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6777 to 1634. [2020-10-12 19:36:30,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1634 states. [2020-10-12 19:36:30,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1634 states to 1634 states and 2464 transitions. [2020-10-12 19:36:30,601 INFO L78 Accepts]: Start accepts. Automaton has 1634 states and 2464 transitions. Word has length 70 [2020-10-12 19:36:30,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:30,601 INFO L479 AbstractCegarLoop]: Abstraction has 1634 states and 2464 transitions. [2020-10-12 19:36:30,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:36:30,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1634 states and 2464 transitions. [2020-10-12 19:36:30,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 19:36:30,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:30,603 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] [2020-10-12 19:36:30,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:36:30,604 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:30,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:30,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1440457192, now seen corresponding path program 1 times [2020-10-12 19:36:30,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:30,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501548831] [2020-10-12 19:36:30,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:30,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:30,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:30,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:30,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:30,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:30,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:31,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:32,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:32,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:32,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:35,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:35,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 19:36:35,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-12 19:36:35,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:36:35,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 19:36:35,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:36:35,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-12 19:36:35,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:36,371 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-12 19:36:36,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:36,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:36,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:36,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:36,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:36,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:36:36,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:36:36,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:36,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:36:36,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:36,407 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 19:36:36,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501548831] [2020-10-12 19:36:36,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:36,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:36:36,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028790396] [2020-10-12 19:36:36,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 19:36:36,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:36,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 19:36:36,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-12 19:36:36,409 INFO L87 Difference]: Start difference. First operand 1634 states and 2464 transitions. Second operand 16 states. [2020-10-12 19:36:36,601 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-12 19:36:37,159 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2020-10-12 19:36:37,469 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-12 19:36:43,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:36:43,678 INFO L93 Difference]: Finished difference Result 6536 states and 10123 transitions. [2020-10-12 19:36:43,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:36:43,679 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-10-12 19:36:43,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:36:43,690 INFO L225 Difference]: With dead ends: 6536 [2020-10-12 19:36:43,691 INFO L226 Difference]: Without dead ends: 5928 [2020-10-12 19:36:43,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=172, Invalid=698, Unknown=0, NotChecked=0, Total=870 [2020-10-12 19:36:43,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5928 states. [2020-10-12 19:36:44,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5928 to 1639. [2020-10-12 19:36:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1639 states. [2020-10-12 19:36:44,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2470 transitions. [2020-10-12 19:36:44,219 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2470 transitions. Word has length 70 [2020-10-12 19:36:44,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:36:44,220 INFO L479 AbstractCegarLoop]: Abstraction has 1639 states and 2470 transitions. [2020-10-12 19:36:44,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 19:36:44,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2470 transitions. [2020-10-12 19:36:44,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 19:36:44,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:36:44,221 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] [2020-10-12 19:36:44,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 19:36:44,222 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:36:44,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:36:44,222 INFO L82 PathProgramCache]: Analyzing trace with hash -609217318, now seen corresponding path program 1 times [2020-10-12 19:36:44,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:36:44,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434854194] [2020-10-12 19:36:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:36:44,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:44,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:44,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:44,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:44,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:44,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:44,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:44,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:44,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:47,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:49,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:49,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 19:36:49,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-12 19:36:49,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:36:49,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:49,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:36:49,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:36:49,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 19:36:49,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:49,829 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-12 19:36:49,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:36:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:36:49,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:36:49,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:36:49,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:36:49,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:36:49,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:36:49,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:36:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:36:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:36:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:36:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:36:49,866 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 19:36:49,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434854194] [2020-10-12 19:36:49,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:36:49,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:36:49,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758100569] [2020-10-12 19:36:49,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:36:49,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:36:49,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:36:49,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:36:49,871 INFO L87 Difference]: Start difference. First operand 1639 states and 2470 transitions. Second operand 14 states. [2020-10-12 19:36:50,291 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 19:36:53,510 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-12 19:36:57,223 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-12 19:36:57,650 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2020-10-12 19:36:58,162 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2020-10-12 19:37:00,964 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2020-10-12 19:37:01,327 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 54 [2020-10-12 19:37:01,645 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-12 19:37:02,194 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2020-10-12 19:37:02,415 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2020-10-12 19:37:02,644 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-12 19:37:03,743 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2020-10-12 19:37:03,976 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-12 19:37:04,255 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2020-10-12 19:37:04,533 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2020-10-12 19:37:05,442 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2020-10-12 19:37:06,014 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2020-10-12 19:37:06,613 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 62 [2020-10-12 19:37:07,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:07,030 INFO L93 Difference]: Finished difference Result 15547 states and 24065 transitions. [2020-10-12 19:37:07,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-12 19:37:07,031 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 70 [2020-10-12 19:37:07,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:07,053 INFO L225 Difference]: With dead ends: 15547 [2020-10-12 19:37:07,053 INFO L226 Difference]: Without dead ends: 15135 [2020-10-12 19:37:07,059 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1389 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=960, Invalid=3596, Unknown=0, NotChecked=0, Total=4556 [2020-10-12 19:37:07,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15135 states. [2020-10-12 19:37:07,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15135 to 1661. [2020-10-12 19:37:07,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1661 states. [2020-10-12 19:37:07,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2499 transitions. [2020-10-12 19:37:07,892 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2499 transitions. Word has length 70 [2020-10-12 19:37:07,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:07,893 INFO L479 AbstractCegarLoop]: Abstraction has 1661 states and 2499 transitions. [2020-10-12 19:37:07,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:37:07,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2499 transitions. [2020-10-12 19:37:07,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 19:37:07,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:07,894 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] [2020-10-12 19:37:07,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 19:37:07,895 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:07,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:07,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1521027259, now seen corresponding path program 1 times [2020-10-12 19:37:07,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:07,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067812890] [2020-10-12 19:37:07,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:07,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:07,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:08,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:09,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:09,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:12,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:12,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 19:37:12,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 19:37:12,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 19:37:12,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:37:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:37:12,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:37:12,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:13,219 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-12 19:37:13,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:13,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:13,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:13,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:13,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:37:13,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:13,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:13,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:13,242 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 19:37:13,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067812890] [2020-10-12 19:37:13,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:13,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-12 19:37:13,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181190958] [2020-10-12 19:37:13,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:37:13,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:13,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:37:13,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:37:13,243 INFO L87 Difference]: Start difference. First operand 1661 states and 2499 transitions. Second operand 10 states. [2020-10-12 19:37:13,397 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-12 19:37:15,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:15,995 INFO L93 Difference]: Finished difference Result 4798 states and 7431 transitions. [2020-10-12 19:37:15,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 19:37:15,996 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-12 19:37:15,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:16,000 INFO L225 Difference]: With dead ends: 4798 [2020-10-12 19:37:16,001 INFO L226 Difference]: Without dead ends: 3569 [2020-10-12 19:37:16,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-10-12 19:37:16,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2020-10-12 19:37:16,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 1655. [2020-10-12 19:37:16,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1655 states. [2020-10-12 19:37:16,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2488 transitions. [2020-10-12 19:37:16,564 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2488 transitions. Word has length 70 [2020-10-12 19:37:16,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:16,564 INFO L479 AbstractCegarLoop]: Abstraction has 1655 states and 2488 transitions. [2020-10-12 19:37:16,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:37:16,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2488 transitions. [2020-10-12 19:37:16,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-12 19:37:16,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:16,566 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] [2020-10-12 19:37:16,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 19:37:16,566 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:16,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:16,567 INFO L82 PathProgramCache]: Analyzing trace with hash -2087558118, now seen corresponding path program 1 times [2020-10-12 19:37:16,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:16,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464947250] [2020-10-12 19:37:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:16,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:16,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:16,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:16,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:17,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:17,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:17,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:17,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:18,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:18,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:19,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:19,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:20,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:20,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:21,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:21,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:21,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 19:37:21,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:37:21,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:37:21,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:21,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:37:21,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 19:37:21,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:37:21,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:21,996 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 52 [2020-10-12 19:37:22,265 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-12 19:37:22,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:22,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:22,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:22,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:22,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:22,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:37:22,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:22,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:22,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:22,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:22,288 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 19:37:22,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464947250] [2020-10-12 19:37:22,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:22,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-12 19:37:22,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723164253] [2020-10-12 19:37:22,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:37:22,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:22,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:37:22,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:37:22,291 INFO L87 Difference]: Start difference. First operand 1655 states and 2488 transitions. Second operand 17 states. [2020-10-12 19:37:22,753 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 131 [2020-10-12 19:37:23,307 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2020-10-12 19:37:23,510 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2020-10-12 19:37:23,755 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-10-12 19:37:34,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:34,267 INFO L93 Difference]: Finished difference Result 10015 states and 15447 transitions. [2020-10-12 19:37:34,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-12 19:37:34,268 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 70 [2020-10-12 19:37:34,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:34,277 INFO L225 Difference]: With dead ends: 10015 [2020-10-12 19:37:34,277 INFO L226 Difference]: Without dead ends: 9361 [2020-10-12 19:37:34,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=475, Invalid=2281, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 19:37:34,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9361 states. [2020-10-12 19:37:35,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9361 to 2270. [2020-10-12 19:37:35,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2270 states. [2020-10-12 19:37:35,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 3432 transitions. [2020-10-12 19:37:35,215 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 3432 transitions. Word has length 70 [2020-10-12 19:37:35,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:35,216 INFO L479 AbstractCegarLoop]: Abstraction has 2270 states and 3432 transitions. [2020-10-12 19:37:35,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:37:35,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 3432 transitions. [2020-10-12 19:37:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 19:37:35,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:35,219 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] [2020-10-12 19:37:35,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 19:37:35,219 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:35,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:35,219 INFO L82 PathProgramCache]: Analyzing trace with hash 513303759, now seen corresponding path program 1 times [2020-10-12 19:37:35,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:35,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752913011] [2020-10-12 19:37:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:35,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:35,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:35,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:35,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:35,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:35,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:36,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:36,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:36,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:37,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:37,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:37,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:37,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:37,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:37,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:37,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:39,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:39,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:40,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:40,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 19:37:40,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 19:37:40,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-12 19:37:40,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:40,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 19:37:40,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 19:37:40,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-12 19:37:40,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:40,669 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 21 [2020-10-12 19:37:41,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:41,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:41,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:41,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:41,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:41,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:37:41,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:41,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:37:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:41,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:37:41,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:41,098 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 19:37:41,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752913011] [2020-10-12 19:37:41,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:41,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-12 19:37:41,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399619851] [2020-10-12 19:37:41,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 19:37:41,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:41,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 19:37:41,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:37:41,101 INFO L87 Difference]: Start difference. First operand 2270 states and 3432 transitions. Second operand 19 states. [2020-10-12 19:37:41,343 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-12 19:37:42,186 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-12 19:37:50,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:37:50,617 INFO L93 Difference]: Finished difference Result 8658 states and 13252 transitions. [2020-10-12 19:37:50,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-12 19:37:50,617 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 71 [2020-10-12 19:37:50,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:37:50,625 INFO L225 Difference]: With dead ends: 8658 [2020-10-12 19:37:50,625 INFO L226 Difference]: Without dead ends: 8451 [2020-10-12 19:37:50,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 835 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=497, Invalid=2695, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 19:37:50,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8451 states. [2020-10-12 19:37:51,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8451 to 2270. [2020-10-12 19:37:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2270 states. [2020-10-12 19:37:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2270 states to 2270 states and 3431 transitions. [2020-10-12 19:37:51,514 INFO L78 Accepts]: Start accepts. Automaton has 2270 states and 3431 transitions. Word has length 71 [2020-10-12 19:37:51,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:37:51,514 INFO L479 AbstractCegarLoop]: Abstraction has 2270 states and 3431 transitions. [2020-10-12 19:37:51,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 19:37:51,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2270 states and 3431 transitions. [2020-10-12 19:37:51,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 19:37:51,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:37:51,517 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] [2020-10-12 19:37:51,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 19:37:51,517 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:37:51,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:37:51,518 INFO L82 PathProgramCache]: Analyzing trace with hash 623083018, now seen corresponding path program 1 times [2020-10-12 19:37:51,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:37:51,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905523212] [2020-10-12 19:37:51,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:37:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:51,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:51,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:51,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:51,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:51,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:53,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:53,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:53,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:53,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:54,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:55,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:56,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:56,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:56,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:56,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 19:37:56,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-12 19:37:56,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:37:56,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:37:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:37:56,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-12 19:37:56,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:57,073 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-12 19:37:57,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:37:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:37:57,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:37:57,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:37:57,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:37:57,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:37:57,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-12 19:37:57,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:37:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:37:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:37:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:37:57,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:37:57,111 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 19:37:57,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905523212] [2020-10-12 19:37:57,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:37:57,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:37:57,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096606827] [2020-10-12 19:37:57,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:37:57,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:37:57,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:37:57,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:37:57,113 INFO L87 Difference]: Start difference. First operand 2270 states and 3431 transitions. Second operand 15 states. [2020-10-12 19:37:57,262 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-12 19:37:57,746 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2020-10-12 19:37:58,080 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-12 19:37:58,398 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-12 19:37:58,559 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-12 19:37:58,740 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 40 [2020-10-12 19:37:59,023 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-12 19:37:59,214 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2020-10-12 19:38:00,156 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-10-12 19:38:00,349 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-12 19:38:02,711 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-12 19:38:02,919 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-12 19:38:03,216 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-12 19:38:03,396 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-10-12 19:38:03,546 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-10-12 19:38:03,897 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2020-10-12 19:38:04,205 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2020-10-12 19:38:04,351 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-10-12 19:38:04,868 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-12 19:38:05,107 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-12 19:38:05,428 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-10-12 19:38:06,567 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-12 19:38:06,792 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-10-12 19:38:06,984 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2020-10-12 19:38:09,832 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-12 19:38:09,982 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-10-12 19:38:10,185 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-12 19:38:10,349 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-10-12 19:38:10,563 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-10-12 19:38:10,794 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 41 [2020-10-12 19:38:10,997 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2020-10-12 19:38:11,228 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 43 [2020-10-12 19:38:12,018 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-10-12 19:38:14,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:38:14,137 INFO L93 Difference]: Finished difference Result 14882 states and 22787 transitions. [2020-10-12 19:38:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-12 19:38:14,138 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 71 [2020-10-12 19:38:14,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:38:14,152 INFO L225 Difference]: With dead ends: 14882 [2020-10-12 19:38:14,152 INFO L226 Difference]: Without dead ends: 13431 [2020-10-12 19:38:14,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1882 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=1108, Invalid=4442, Unknown=0, NotChecked=0, Total=5550 [2020-10-12 19:38:14,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13431 states. [2020-10-12 19:38:15,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13431 to 2017. [2020-10-12 19:38:15,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2017 states. [2020-10-12 19:38:15,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2017 states to 2017 states and 3060 transitions. [2020-10-12 19:38:15,066 INFO L78 Accepts]: Start accepts. Automaton has 2017 states and 3060 transitions. Word has length 71 [2020-10-12 19:38:15,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:38:15,066 INFO L479 AbstractCegarLoop]: Abstraction has 2017 states and 3060 transitions. [2020-10-12 19:38:15,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:38:15,066 INFO L276 IsEmpty]: Start isEmpty. Operand 2017 states and 3060 transitions. [2020-10-12 19:38:15,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-12 19:38:15,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:38:15,068 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] [2020-10-12 19:38:15,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 19:38:15,068 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:38:15,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:38:15,068 INFO L82 PathProgramCache]: Analyzing trace with hash 546936265, now seen corresponding path program 1 times [2020-10-12 19:38:15,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:38:15,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319795682] [2020-10-12 19:38:15,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:38:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:15,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:16,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:16,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:16,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:16,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:16,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:16,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:17,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:17,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:20,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:20,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-12 19:38:20,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:38:20,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 19:38:20,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 19:38:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:38:20,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-12 19:38:20,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:20,294 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-10-12 19:38:20,417 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 39 [2020-10-12 19:38:20,563 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 42 [2020-10-12 19:38:20,721 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 41 [2020-10-12 19:38:20,858 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-12 19:38:21,074 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 33 [2020-10-12 19:38:21,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:38:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:38:21,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:38:21,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:38:21,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:38:21,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:38:21,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:38:21,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:38:21,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:38:21,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:38:21,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:38:21,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:38:21,789 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 19:38:21,789 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319795682] [2020-10-12 19:38:21,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:38:21,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-12 19:38:21,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960230032] [2020-10-12 19:38:21,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 19:38:21,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:38:21,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 19:38:21,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-10-12 19:38:21,791 INFO L87 Difference]: Start difference. First operand 2017 states and 3060 transitions. Second operand 19 states. [2020-10-12 19:38:22,144 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-12 19:38:22,679 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-12 19:38:22,891 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-10-12 19:38:23,170 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2020-10-12 19:38:23,480 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-12 19:38:23,864 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-12 19:38:24,240 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-10-12 19:38:24,825 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 99 [2020-10-12 19:38:25,127 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-12 19:38:25,523 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-12 19:38:26,038 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75