/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/array-industry-pattern/check_removal_from_set_after_insertion.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:23:06,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:23:06,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:23:06,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:23:06,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:23:06,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:23:06,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:23:06,608 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:23:06,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:23:06,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:23:06,620 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:23:06,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:23:06,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:23:06,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:23:06,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:23:06,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:23:06,630 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:23:06,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:23:06,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:23:06,648 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:23:06,650 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:23:06,652 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:23:06,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:23:06,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:23:06,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:23:06,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:23:06,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:23:06,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:23:06,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:23:06,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:23:06,669 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:23:06,670 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:23:06,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:23:06,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:23:06,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:23:06,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:23:06,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:23:06,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:23:06,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:23:06,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:23:06,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:23:06,684 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 [2020-10-28 09:23:06,733 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:23:06,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:23:06,738 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:23:06,738 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:23:06,739 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:23:06,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:23:06,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:23:06,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:23:06,739 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:23:06,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:23:06,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:23:06,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:23:06,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:23:06,741 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:23:06,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:23:06,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:23:06,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:23:06,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:23:06,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:23:06,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:23:06,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:23:06,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:23:06,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:23:06,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:23:06,744 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:23:06,744 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:23:06,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:23:06,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:23:06,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:23:06,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:23:07,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:23:07,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:23:07,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:23:07,251 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:23:07,252 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:23:07,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/check_removal_from_set_after_insertion.c [2020-10-28 09:23:07,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dd9a522b/72cae93e2ee64100ad495bc846dd76b9/FLAG6c0d4f750 [2020-10-28 09:23:08,023 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:23:08,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-industry-pattern/check_removal_from_set_after_insertion.c [2020-10-28 09:23:08,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dd9a522b/72cae93e2ee64100ad495bc846dd76b9/FLAG6c0d4f750 [2020-10-28 09:23:08,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dd9a522b/72cae93e2ee64100ad495bc846dd76b9 [2020-10-28 09:23:08,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:23:08,387 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:23:08,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:23:08,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:23:08,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:23:08,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:23:08" (1/1) ... [2020-10-28 09:23:08,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c2440b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:08, skipping insertion in model container [2020-10-28 09:23:08,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:23:08" (1/1) ... [2020-10-28 09:23:08,413 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:23:08,439 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:23:08,628 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:23:08,638 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:23:08,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:23:08,697 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:23:08,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:08 WrapperNode [2020-10-28 09:23:08,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:23:08,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:23:08,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:23:08,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:23:08,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:08" (1/1) ... [2020-10-28 09:23:08,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:08" (1/1) ... [2020-10-28 09:23:08,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:08" (1/1) ... [2020-10-28 09:23:08,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:08" (1/1) ... [2020-10-28 09:23:08,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:08" (1/1) ... [2020-10-28 09:23:08,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:08" (1/1) ... [2020-10-28 09:23:08,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:08" (1/1) ... [2020-10-28 09:23:08,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:23:08,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:23:08,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:23:08,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:23:08,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:08" (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 [2020-10-28 09:23:08,829 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:23:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:23:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:23:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:23:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-10-28 09:23:08,830 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-10-28 09:23:08,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:23:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:23:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:23:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:23:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:23:08,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:23:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:23:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-10-28 09:23:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:23:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-10-28 09:23:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:23:08,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:23:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:23:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:23:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:23:08,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:23:09,538 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:23:09,539 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-28 09:23:09,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:23:09 BoogieIcfgContainer [2020-10-28 09:23:09,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:23:09,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:23:09,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:23:09,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:23:09,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:23:08" (1/3) ... [2020-10-28 09:23:09,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133acaf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:23:09, skipping insertion in model container [2020-10-28 09:23:09,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:23:08" (2/3) ... [2020-10-28 09:23:09,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133acaf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:23:09, skipping insertion in model container [2020-10-28 09:23:09,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:23:09" (3/3) ... [2020-10-28 09:23:09,557 INFO L111 eAbstractionObserver]: Analyzing ICFG check_removal_from_set_after_insertion.c [2020-10-28 09:23:09,574 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:23:09,580 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:23:09,600 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:23:09,651 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:23:09,651 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:23:09,652 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:23:09,652 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:23:09,652 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:23:09,653 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:23:09,653 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:23:09,653 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:23:09,684 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-10-28 09:23:09,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 09:23:09,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:09,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:09,695 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:09,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:09,705 INFO L82 PathProgramCache]: Analyzing trace with hash -391531476, now seen corresponding path program 1 times [2020-10-28 09:23:09,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:09,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330912928] [2020-10-28 09:23:09,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:09,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:10,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 09:23:10,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:23:10,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 910 [2020-10-28 09:23:10,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:10,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:10,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:10,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 09:23:10,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:10,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 09:23:10,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:10,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:10,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:10,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:10,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:10,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 09:23:10,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:10,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:10,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:10,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:10,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:23:10,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:10,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330912928] [2020-10-28 09:23:10,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:23:10,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:23:11,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8214413] [2020-10-28 09:23:11,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:23:11,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:11,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:23:11,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:23:11,035 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 3 states. [2020-10-28 09:23:11,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:11,255 INFO L93 Difference]: Finished difference Result 95 states and 130 transitions. [2020-10-28 09:23:11,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:23:11,257 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-10-28 09:23:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:11,267 INFO L225 Difference]: With dead ends: 95 [2020-10-28 09:23:11,267 INFO L226 Difference]: Without dead ends: 45 [2020-10-28 09:23:11,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:23:11,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-28 09:23:11,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-28 09:23:11,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 09:23:11,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-28 09:23:11,348 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 19 [2020-10-28 09:23:11,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:11,349 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-28 09:23:11,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:23:11,349 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-28 09:23:11,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 09:23:11,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:11,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:11,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:23:11,353 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:11,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:11,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1741614121, now seen corresponding path program 1 times [2020-10-28 09:23:11,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:11,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908730537] [2020-10-28 09:23:11,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:11,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:11,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:11,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:11,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:11,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:11,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:12,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 09:23:12,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:23:12,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 837 [2020-10-28 09:23:12,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:12,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:12,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:23:12,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:23:12,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 09:23:12,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:12,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:12,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:12,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:12,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:12,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 09:23:12,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:12,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:12,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:23:12,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:12,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:23:12,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908730537] [2020-10-28 09:23:12,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:23:12,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:23:12,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791438438] [2020-10-28 09:23:12,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:23:12,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:12,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:23:12,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:23:12,353 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 5 states. [2020-10-28 09:23:12,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:12,630 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2020-10-28 09:23:12,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:23:12,631 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-28 09:23:12,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:12,634 INFO L225 Difference]: With dead ends: 71 [2020-10-28 09:23:12,634 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 09:23:12,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:23:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 09:23:12,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-10-28 09:23:12,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 09:23:12,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2020-10-28 09:23:12,650 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 19 [2020-10-28 09:23:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:12,651 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2020-10-28 09:23:12,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:23:12,651 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2020-10-28 09:23:12,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 09:23:12,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:12,652 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] [2020-10-28 09:23:12,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:23:12,653 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:12,653 INFO L82 PathProgramCache]: Analyzing trace with hash -257541843, now seen corresponding path program 1 times [2020-10-28 09:23:12,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:12,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19845993] [2020-10-28 09:23:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:12,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:12,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:13,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:13,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:15,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:15,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-28 09:23:15,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 09:23:15,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2336 [2020-10-28 09:23:15,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:15,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:15,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:15,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:23:15,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 09:23:15,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:15,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:15,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:15,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:15,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:15,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:15,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:23:15,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:15,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:15,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:15,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:15,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:15,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:15,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 09:23:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:15,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:15,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:15,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:23:15,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:15,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:23:15,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:15,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:15,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:23:15,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:15,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 09:23:15,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19845993] [2020-10-28 09:23:15,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:23:15,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:23:15,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294828793] [2020-10-28 09:23:15,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:23:15,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:15,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:23:15,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:23:15,083 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 4 states. [2020-10-28 09:23:15,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:15,217 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2020-10-28 09:23:15,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:23:15,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-28 09:23:15,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:15,219 INFO L225 Difference]: With dead ends: 65 [2020-10-28 09:23:15,219 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 09:23:15,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:23:15,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 09:23:15,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-28 09:23:15,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 09:23:15,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2020-10-28 09:23:15,230 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 29 [2020-10-28 09:23:15,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:15,230 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2020-10-28 09:23:15,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:23:15,230 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2020-10-28 09:23:15,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-28 09:23:15,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:15,232 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] [2020-10-28 09:23:15,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:23:15,232 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:15,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:15,233 INFO L82 PathProgramCache]: Analyzing trace with hash 811213527, now seen corresponding path program 1 times [2020-10-28 09:23:15,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:15,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301285374] [2020-10-28 09:23:15,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:15,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:15,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:15,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:15,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:15,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:15,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:16,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:16,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:16,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:20,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:20,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-28 09:23:20,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 09:23:20,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4889 [2020-10-28 09:23:20,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:20,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:23:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:23:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 09:23:20,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:20,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:20,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:20,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:20,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:20,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:20,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:23:20,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:20,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:23:20,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:20,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-28 09:23:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:20,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:20,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:20,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:23:20,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:20,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:23:20,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:20,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:20,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:20,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 09:23:20,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:20,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:20,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 09:23:20,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301285374] [2020-10-28 09:23:20,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:23:20,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:23:20,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732268872] [2020-10-28 09:23:20,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:23:20,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:20,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:23:20,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:23:20,235 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand 5 states. [2020-10-28 09:23:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:20,466 INFO L93 Difference]: Finished difference Result 100 states and 122 transitions. [2020-10-28 09:23:20,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:23:20,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-10-28 09:23:20,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:20,468 INFO L225 Difference]: With dead ends: 100 [2020-10-28 09:23:20,468 INFO L226 Difference]: Without dead ends: 59 [2020-10-28 09:23:20,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:23:20,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-28 09:23:20,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 50. [2020-10-28 09:23:20,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-28 09:23:20,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-10-28 09:23:20,478 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 32 [2020-10-28 09:23:20,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:20,478 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-10-28 09:23:20,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:23:20,479 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-10-28 09:23:20,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 09:23:20,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:20,480 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] [2020-10-28 09:23:20,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:23:20,481 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:20,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:20,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1825249977, now seen corresponding path program 1 times [2020-10-28 09:23:20,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:20,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666891630] [2020-10-28 09:23:20,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:20,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:20,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:20,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:20,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:20,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:20,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:20,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:24,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:24,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 09:23:24,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:23:24,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4459 [2020-10-28 09:23:24,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:24,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:23:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 09:23:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:23:24,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:25,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:25,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:25,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:25,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:25,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:25,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:23:25,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:25,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:25,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:25,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 09:23:25,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 09:23:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:25,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:25,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:25,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:23:25,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:25,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 09:23:25,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:25,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:23:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:25,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:23:25,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:25,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 09:23:25,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666891630] [2020-10-28 09:23:25,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:23:25,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 09:23:25,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363583452] [2020-10-28 09:23:25,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:23:25,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:25,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:23:25,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:23:25,089 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 5 states. [2020-10-28 09:23:25,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:25,245 INFO L93 Difference]: Finished difference Result 93 states and 113 transitions. [2020-10-28 09:23:25,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:23:25,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-28 09:23:25,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:25,247 INFO L225 Difference]: With dead ends: 93 [2020-10-28 09:23:25,247 INFO L226 Difference]: Without dead ends: 54 [2020-10-28 09:23:25,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:23:25,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-28 09:23:25,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-28 09:23:25,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 09:23:25,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-28 09:23:25,256 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 34 [2020-10-28 09:23:25,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:25,256 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-28 09:23:25,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:23:25,257 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-28 09:23:25,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-28 09:23:25,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:25,258 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] [2020-10-28 09:23:25,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:23:25,258 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:25,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:25,259 INFO L82 PathProgramCache]: Analyzing trace with hash 814754082, now seen corresponding path program 1 times [2020-10-28 09:23:25,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:25,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [897149809] [2020-10-28 09:23:25,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:25,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:25,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:25,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:25,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:25,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:25,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:25,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:25,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:29,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:29,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 09:23:29,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:23:29,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4045 [2020-10-28 09:23:29,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:29,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:29,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:29,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 09:23:29,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 09:23:29,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:29,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:29,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:29,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:29,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:29,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:29,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:23:29,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:29,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:29,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:29,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 09:23:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:29,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:29,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:29,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:23:29,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:29,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:23:29,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:29,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:29,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:29,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:29,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:29,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:29,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 09:23:29,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [897149809] [2020-10-28 09:23:29,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:23:29,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:23:29,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458335821] [2020-10-28 09:23:29,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:23:29,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:29,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:23:29,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:23:29,393 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 4 states. [2020-10-28 09:23:29,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:29,515 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2020-10-28 09:23:29,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:23:29,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-10-28 09:23:29,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:29,517 INFO L225 Difference]: With dead ends: 71 [2020-10-28 09:23:29,517 INFO L226 Difference]: Without dead ends: 53 [2020-10-28 09:23:29,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:23:29,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-28 09:23:29,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-28 09:23:29,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-28 09:23:29,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 60 transitions. [2020-10-28 09:23:29,527 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 60 transitions. Word has length 34 [2020-10-28 09:23:29,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:29,527 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 60 transitions. [2020-10-28 09:23:29,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:23:29,527 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 60 transitions. [2020-10-28 09:23:29,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 09:23:29,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:29,528 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] [2020-10-28 09:23:29,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:23:29,529 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:29,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:29,529 INFO L82 PathProgramCache]: Analyzing trace with hash 206781984, now seen corresponding path program 1 times [2020-10-28 09:23:29,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:29,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903923914] [2020-10-28 09:23:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:29,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:29,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:29,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:29,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:29,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:29,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:32,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 09:23:32,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:23:32,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2891 [2020-10-28 09:23:32,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:32,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:23:32,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:23:32,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 09:23:32,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:32,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:32,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:32,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:32,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:32,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 09:23:32,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:32,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:32,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:23:32,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:32,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 09:23:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:32,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:32,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:23:32,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:32,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:23:32,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:32,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:32,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:32,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:23:32,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 09:23:32,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 09:23:32,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903923914] [2020-10-28 09:23:32,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:32,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 09:23:32,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228486671] [2020-10-28 09:23:32,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:23:32,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:32,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:23:32,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:23:32,574 INFO L87 Difference]: Start difference. First operand 53 states and 60 transitions. Second operand 6 states. [2020-10-28 09:23:32,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:32,852 INFO L93 Difference]: Finished difference Result 89 states and 102 transitions. [2020-10-28 09:23:32,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:23:32,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-28 09:23:32,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:32,854 INFO L225 Difference]: With dead ends: 89 [2020-10-28 09:23:32,854 INFO L226 Difference]: Without dead ends: 77 [2020-10-28 09:23:32,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:23:32,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-28 09:23:32,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2020-10-28 09:23:32,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 09:23:32,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 67 transitions. [2020-10-28 09:23:32,877 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 67 transitions. Word has length 35 [2020-10-28 09:23:32,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:32,878 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 67 transitions. [2020-10-28 09:23:32,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:23:32,878 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 67 transitions. [2020-10-28 09:23:32,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 09:23:32,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:32,881 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] [2020-10-28 09:23:32,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:23:32,882 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:32,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:32,882 INFO L82 PathProgramCache]: Analyzing trace with hash -633776510, now seen corresponding path program 1 times [2020-10-28 09:23:32,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:32,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476542680] [2020-10-28 09:23:32,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:32,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:32,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:33,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:33,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:33,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:33,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:37,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:37,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 09:23:37,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:23:37,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:23:37,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:37,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:23:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:23:37,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 09:23:37,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:37,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:37,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:37,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:37,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:37,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:37,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:23:37,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:37,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:37,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:23:37,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:38,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-28 09:23:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:38,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:38,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:38,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:23:38,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:38,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:23:38,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:38,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:38,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:23:38,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:38,018 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 09:23:38,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476542680] [2020-10-28 09:23:38,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:38,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:23:38,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613798449] [2020-10-28 09:23:38,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:23:38,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:38,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:23:38,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:23:38,020 INFO L87 Difference]: Start difference. First operand 59 states and 67 transitions. Second operand 7 states. [2020-10-28 09:23:38,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:38,361 INFO L93 Difference]: Finished difference Result 143 states and 167 transitions. [2020-10-28 09:23:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:23:38,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-10-28 09:23:38,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:38,363 INFO L225 Difference]: With dead ends: 143 [2020-10-28 09:23:38,364 INFO L226 Difference]: Without dead ends: 93 [2020-10-28 09:23:38,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:23:38,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-28 09:23:38,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 63. [2020-10-28 09:23:38,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-28 09:23:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 71 transitions. [2020-10-28 09:23:38,375 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 71 transitions. Word has length 37 [2020-10-28 09:23:38,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:38,375 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 71 transitions. [2020-10-28 09:23:38,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:23:38,376 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 71 transitions. [2020-10-28 09:23:38,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 09:23:38,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:38,377 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:38,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:23:38,377 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:38,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:38,378 INFO L82 PathProgramCache]: Analyzing trace with hash 288506724, now seen corresponding path program 1 times [2020-10-28 09:23:38,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:38,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875202718] [2020-10-28 09:23:38,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:38,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:38,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:38,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:38,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:38,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:38,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:38,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:43,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:43,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 09:23:43,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:23:43,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:23:43,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:43,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:23:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:23:43,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 09:23:43,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:43,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:43,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:43,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:43,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:43,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:43,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:43,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 09:23:43,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:43,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:43,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:43,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:23:43,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:43,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:23:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:43,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:43,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:43,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:23:43,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:43,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:23:43,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:43,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:43,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:43,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:43,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:23:43,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:23:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 09:23:43,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875202718] [2020-10-28 09:23:43,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:43,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:23:43,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252298683] [2020-10-28 09:23:43,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:23:43,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:43,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:23:43,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:23:43,546 INFO L87 Difference]: Start difference. First operand 63 states and 71 transitions. Second operand 7 states. [2020-10-28 09:23:43,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:43,905 INFO L93 Difference]: Finished difference Result 108 states and 124 transitions. [2020-10-28 09:23:43,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 09:23:43,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-28 09:23:43,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:43,907 INFO L225 Difference]: With dead ends: 108 [2020-10-28 09:23:43,907 INFO L226 Difference]: Without dead ends: 96 [2020-10-28 09:23:43,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:23:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-28 09:23:43,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 69. [2020-10-28 09:23:43,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-28 09:23:43,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2020-10-28 09:23:43,918 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 40 [2020-10-28 09:23:43,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:43,919 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2020-10-28 09:23:43,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:23:43,919 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2020-10-28 09:23:43,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-28 09:23:43,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:43,920 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:43,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:23:43,920 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:43,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:43,921 INFO L82 PathProgramCache]: Analyzing trace with hash -1549818814, now seen corresponding path program 2 times [2020-10-28 09:23:43,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:43,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [876689285] [2020-10-28 09:23:43,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:43,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:43,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:44,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:44,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:44,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:44,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:45,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:48,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:48,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-28 09:23:48,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:23:48,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:23:48,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:48,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:23:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 09:23:48,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 09:23:48,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:49,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:49,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:49,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:49,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:49,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:23:49,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:49,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:23:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:23:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:49,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:23:49,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:49,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:49,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:49,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:23:49,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:49,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:23:49,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:49,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:49,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:23:49,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 09:23:49,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [876689285] [2020-10-28 09:23:49,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:49,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:23:49,055 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464593444] [2020-10-28 09:23:49,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:23:49,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:49,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:23:49,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:23:49,057 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand 7 states. [2020-10-28 09:23:49,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:49,423 INFO L93 Difference]: Finished difference Result 122 states and 144 transitions. [2020-10-28 09:23:49,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:23:49,424 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-10-28 09:23:49,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:49,426 INFO L225 Difference]: With dead ends: 122 [2020-10-28 09:23:49,426 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 09:23:49,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:23:49,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 09:23:49,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 78. [2020-10-28 09:23:49,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-28 09:23:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 91 transitions. [2020-10-28 09:23:49,437 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 91 transitions. Word has length 41 [2020-10-28 09:23:49,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:49,437 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 91 transitions. [2020-10-28 09:23:49,437 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:23:49,437 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 91 transitions. [2020-10-28 09:23:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 09:23:49,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:49,440 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:49,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:23:49,440 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:49,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:49,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1154725775, now seen corresponding path program 3 times [2020-10-28 09:23:49,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:49,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [319707160] [2020-10-28 09:23:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:49,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:49,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:49,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:49,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:50,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:50,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:54,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:54,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 09:23:54,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:23:54,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:23:54,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:54,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:54,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 09:23:54,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:23:54,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 09:23:54,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:54,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:23:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:54,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:54,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:54,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:23:54,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:23:54,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:54,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:54,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:54,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:54,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:23:54,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:54,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:23:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:54,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:54,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:54,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:23:54,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:54,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:23:54,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:54,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:54,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:23:54,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:54,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:23:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:54,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:54,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:23:54,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:23:54,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:23:54,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:23:54,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:23:54,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:23:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:23:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:23:54,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:23:54,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:23:54,617 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 09:23:54,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [319707160] [2020-10-28 09:23:54,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:23:54,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 09:23:54,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720529529] [2020-10-28 09:23:54,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 09:23:54,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:23:54,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 09:23:54,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 09:23:54,621 INFO L87 Difference]: Start difference. First operand 78 states and 91 transitions. Second operand 7 states. [2020-10-28 09:23:55,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:23:55,049 INFO L93 Difference]: Finished difference Result 130 states and 156 transitions. [2020-10-28 09:23:55,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 09:23:55,050 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-10-28 09:23:55,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:23:55,052 INFO L225 Difference]: With dead ends: 130 [2020-10-28 09:23:55,053 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 09:23:55,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:23:55,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 09:23:55,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 87. [2020-10-28 09:23:55,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-28 09:23:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 104 transitions. [2020-10-28 09:23:55,072 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 104 transitions. Word has length 51 [2020-10-28 09:23:55,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:23:55,072 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 104 transitions. [2020-10-28 09:23:55,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 09:23:55,072 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 104 transitions. [2020-10-28 09:23:55,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 09:23:55,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:23:55,074 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:23:55,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:23:55,076 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:23:55,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:23:55,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1223307620, now seen corresponding path program 4 times [2020-10-28 09:23:55,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:23:55,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016525644] [2020-10-28 09:23:55,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:23:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:23:55,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:55,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:55,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:55,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:55,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:56,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:23:56,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:00,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:00,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 09:24:00,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:24:00,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:24:00,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:00,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:00,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 09:24:00,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:24:00,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 09:24:00,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:00,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:00,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:00,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:00,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:00,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:00,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:24:00,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:00,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:00,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:00,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:00,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:24:00,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:00,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:24:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:00,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:00,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:00,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:00,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:00,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:00,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:00,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:00,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:00,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:00,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:24:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:00,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:00,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:00,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:00,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:00,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:00,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:00,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:00,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:00,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:00,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:00,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:00,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 09:24:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:00,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:00,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:00,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:00,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:00,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:24:00,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:00,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:00,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:00,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:00,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:00,234 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 09:24:00,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016525644] [2020-10-28 09:24:00,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:00,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:24:00,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081423548] [2020-10-28 09:24:00,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:24:00,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:00,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:24:00,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:24:00,237 INFO L87 Difference]: Start difference. First operand 87 states and 104 transitions. Second operand 8 states. [2020-10-28 09:24:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:00,667 INFO L93 Difference]: Finished difference Result 139 states and 169 transitions. [2020-10-28 09:24:00,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 09:24:00,668 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-28 09:24:00,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:00,670 INFO L225 Difference]: With dead ends: 139 [2020-10-28 09:24:00,670 INFO L226 Difference]: Without dead ends: 104 [2020-10-28 09:24:00,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:24:00,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-28 09:24:00,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2020-10-28 09:24:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-28 09:24:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 117 transitions. [2020-10-28 09:24:00,682 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 117 transitions. Word has length 61 [2020-10-28 09:24:00,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:00,683 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 117 transitions. [2020-10-28 09:24:00,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:24:00,683 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 117 transitions. [2020-10-28 09:24:00,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 09:24:00,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:00,684 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:00,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:24:00,685 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:00,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:00,685 INFO L82 PathProgramCache]: Analyzing trace with hash -628868759, now seen corresponding path program 5 times [2020-10-28 09:24:00,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:00,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1705490074] [2020-10-28 09:24:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:00,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:00,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:00,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:00,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:00,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:00,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:02,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:02,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:02,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:02,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:03,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:05,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:05,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 09:24:05,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 09:24:05,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 09:24:05,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:05,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:05,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:24:05,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:24:05,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 09:24:05,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:05,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:05,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:05,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:05,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:05,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:05,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:05,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:05,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:24:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:05,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:24:05,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:05,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:24:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:05,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:05,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:05,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:05,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:05,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:05,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:24:05,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:05,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:05,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:05,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:05,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:24:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:05,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:05,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:05,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:05,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:05,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:05,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 09:24:05,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:05,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:05,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:05,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:05,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:05,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 09:24:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:05,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:05,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:05,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:05,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:05,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:24:05,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 09:24:05,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:05,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:05,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:05,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:05,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:05,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:05,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 09:24:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:05,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:05,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:05,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:05,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:24:05,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:05,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 09:24:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-28 09:24:05,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:05,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:05,900 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-28 09:24:05,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1705490074] [2020-10-28 09:24:05,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:24:05,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 09:24:05,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878694533] [2020-10-28 09:24:05,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 09:24:05,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:05,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 09:24:05,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 09:24:05,903 INFO L87 Difference]: Start difference. First operand 96 states and 117 transitions. Second operand 6 states. [2020-10-28 09:24:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:06,230 INFO L93 Difference]: Finished difference Result 180 states and 222 transitions. [2020-10-28 09:24:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 09:24:06,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2020-10-28 09:24:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:06,234 INFO L225 Difference]: With dead ends: 180 [2020-10-28 09:24:06,234 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 09:24:06,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:24:06,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 09:24:06,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-28 09:24:06,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 09:24:06,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 120 transitions. [2020-10-28 09:24:06,248 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 120 transitions. Word has length 71 [2020-10-28 09:24:06,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:06,248 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 120 transitions. [2020-10-28 09:24:06,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 09:24:06,248 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 120 transitions. [2020-10-28 09:24:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 09:24:06,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:06,250 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:06,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:24:06,250 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:06,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:06,251 INFO L82 PathProgramCache]: Analyzing trace with hash -450547534, now seen corresponding path program 1 times [2020-10-28 09:24:06,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:06,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2030421274] [2020-10-28 09:24:06,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:06,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:06,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:06,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:06,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:07,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:07,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:11,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 09:24:11,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:24:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 09:24:11,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:11,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:24:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:24:11,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 09:24:11,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:11,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:11,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:11,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:11,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:11,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:11,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:24:11,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:11,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:11,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:11,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:24:11,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:11,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-28 09:24:11,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:11,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:11,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:11,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:11,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:11,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:11,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:11,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:11,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:11,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:11,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 09:24:11,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:11,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:11,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:11,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:11,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:24:11,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:11,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:11,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:24:11,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:11,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 09:24:11,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:11,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:11,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:11,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:11,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:24:11,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:11,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:11,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:11,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:11,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:24:11,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:11,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:11,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:11,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:11,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:24:11,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:11,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:11,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:11,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:11,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:11,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:11,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 09:24:11,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:11,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:11,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:11,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:11,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:11,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:24:11,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:11,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:11,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-10-28 09:24:11,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2030421274] [2020-10-28 09:24:11,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:11,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:24:11,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480156419] [2020-10-28 09:24:11,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:24:11,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:11,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:24:11,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:24:11,494 INFO L87 Difference]: Start difference. First operand 98 states and 120 transitions. Second operand 9 states. [2020-10-28 09:24:12,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:12,212 INFO L93 Difference]: Finished difference Result 228 states and 282 transitions. [2020-10-28 09:24:12,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:24:12,213 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 76 [2020-10-28 09:24:12,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:12,214 INFO L225 Difference]: With dead ends: 228 [2020-10-28 09:24:12,214 INFO L226 Difference]: Without dead ends: 141 [2020-10-28 09:24:12,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:24:12,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-10-28 09:24:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 102. [2020-10-28 09:24:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 09:24:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 124 transitions. [2020-10-28 09:24:12,237 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 124 transitions. Word has length 76 [2020-10-28 09:24:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:12,238 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 124 transitions. [2020-10-28 09:24:12,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:24:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 124 transitions. [2020-10-28 09:24:12,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 09:24:12,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:12,248 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:12,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:24:12,248 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:12,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:12,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1633127348, now seen corresponding path program 1 times [2020-10-28 09:24:12,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:12,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159567628] [2020-10-28 09:24:12,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:12,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:12,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:12,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:12,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:12,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:16,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:16,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:17,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:17,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 09:24:17,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:24:17,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:24:17,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:17,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:17,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:24:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:24:17,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 09:24:17,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:17,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:17,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:17,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:17,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:17,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:17,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:24:17,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:17,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:17,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:24:17,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:17,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 09:24:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:17,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:17,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:17,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:17,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:24:17,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:17,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:17,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:24:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:17,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:17,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:17,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:17,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:17,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:17,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:17,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:17,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:24:17,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:17,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 09:24:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:17,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:17,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:17,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:17,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:17,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:17,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:17,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:17,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:17,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:17,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:24:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:17,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:17,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:17,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:17,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:17,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:17,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:17,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:17,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:17,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:17,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:17,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:24:17,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:17,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:17,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:17,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:17,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:17,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:24:17,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:17,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:17,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:17,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:17,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:17,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:24:17,474 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-28 09:24:17,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159567628] [2020-10-28 09:24:17,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:17,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:24:17,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734210474] [2020-10-28 09:24:17,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:24:17,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:17,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:24:17,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:24:17,476 INFO L87 Difference]: Start difference. First operand 102 states and 124 transitions. Second operand 9 states. [2020-10-28 09:24:18,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:18,177 INFO L93 Difference]: Finished difference Result 155 states and 187 transitions. [2020-10-28 09:24:18,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:24:18,178 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-10-28 09:24:18,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:18,185 INFO L225 Difference]: With dead ends: 155 [2020-10-28 09:24:18,186 INFO L226 Difference]: Without dead ends: 143 [2020-10-28 09:24:18,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:24:18,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-28 09:24:18,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 102. [2020-10-28 09:24:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 09:24:18,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 124 transitions. [2020-10-28 09:24:18,221 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 124 transitions. Word has length 79 [2020-10-28 09:24:18,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:18,223 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 124 transitions. [2020-10-28 09:24:18,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:24:18,224 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 124 transitions. [2020-10-28 09:24:18,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 09:24:18,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:18,228 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:18,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:24:18,228 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:18,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:18,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1334274294, now seen corresponding path program 2 times [2020-10-28 09:24:18,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:18,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273458970] [2020-10-28 09:24:18,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:18,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:18,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:18,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:18,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:19,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:23,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 09:24:23,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:24:23,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 09:24:23,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:23,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:23,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:24:23,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:24:23,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 09:24:23,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:23,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:23,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:23,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:23,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:23,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:24:23,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:23,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:23,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:24:23,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:23,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-28 09:24:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:23,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:23,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:23,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:23,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:23,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:23,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:24:23,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:23,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:23,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:23,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:23,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:23,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:23,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:23,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:23,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:24:23,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:23,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 09:24:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:23,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:23,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:23,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:23,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:23,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:23,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:23,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:23,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:23,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:24:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:23,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:23,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:23,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:23,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:23,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:23,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:23,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:23,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:23,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:23,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:23,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:24:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:23,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:23,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:23,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:23,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:24:23,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:23,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:23,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-28 09:24:23,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273458970] [2020-10-28 09:24:23,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:23,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:24:23,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120922251] [2020-10-28 09:24:23,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:24:23,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:23,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:24:23,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:24:23,469 INFO L87 Difference]: Start difference. First operand 102 states and 124 transitions. Second operand 10 states. [2020-10-28 09:24:24,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:24,268 INFO L93 Difference]: Finished difference Result 250 states and 307 transitions. [2020-10-28 09:24:24,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:24:24,269 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 80 [2020-10-28 09:24:24,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:24,271 INFO L225 Difference]: With dead ends: 250 [2020-10-28 09:24:24,272 INFO L226 Difference]: Without dead ends: 161 [2020-10-28 09:24:24,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:24:24,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-10-28 09:24:24,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 106. [2020-10-28 09:24:24,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-28 09:24:24,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 128 transitions. [2020-10-28 09:24:24,295 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 128 transitions. Word has length 80 [2020-10-28 09:24:24,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:24,295 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 128 transitions. [2020-10-28 09:24:24,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:24:24,295 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 128 transitions. [2020-10-28 09:24:24,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 09:24:24,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:24,297 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:24,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:24:24,297 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:24,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:24,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1719638514, now seen corresponding path program 1 times [2020-10-28 09:24:24,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:24,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733928368] [2020-10-28 09:24:24,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:24,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:24,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:24,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:25,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:25,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:28,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:29,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:29,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 09:24:29,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:24:29,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:24:29,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:29,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:29,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:24:29,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:24:29,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 09:24:29,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:29,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:29,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:29,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:29,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:29,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:29,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:29,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:24:29,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:29,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:29,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:29,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:29,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:24:29,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:29,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 09:24:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:29,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:29,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:29,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:29,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:29,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:29,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:29,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:29,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:29,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:24:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:29,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:29,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:29,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:29,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:29,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:29,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:29,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:29,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:24:29,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:29,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 09:24:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:29,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:29,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:29,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:29,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:29,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:29,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:29,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:29,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:29,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:29,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:29,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:29,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:24:29,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:29,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:29,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:29,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:29,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:29,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:29,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:29,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:29,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:29,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:29,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:29,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:24:29,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:29,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:29,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:29,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:29,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:29,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:29,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:29,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:29,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:29,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:29,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-28 09:24:29,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733928368] [2020-10-28 09:24:29,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:29,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:24:29,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915485142] [2020-10-28 09:24:29,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:24:29,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:29,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:24:29,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:24:29,522 INFO L87 Difference]: Start difference. First operand 106 states and 128 transitions. Second operand 9 states. [2020-10-28 09:24:30,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:30,180 INFO L93 Difference]: Finished difference Result 160 states and 192 transitions. [2020-10-28 09:24:30,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:24:30,181 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2020-10-28 09:24:30,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:30,182 INFO L225 Difference]: With dead ends: 160 [2020-10-28 09:24:30,182 INFO L226 Difference]: Without dead ends: 148 [2020-10-28 09:24:30,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:24:30,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-28 09:24:30,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 112. [2020-10-28 09:24:30,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-28 09:24:30,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 135 transitions. [2020-10-28 09:24:30,197 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 135 transitions. Word has length 82 [2020-10-28 09:24:30,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:30,197 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 135 transitions. [2020-10-28 09:24:30,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:24:30,198 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 135 transitions. [2020-10-28 09:24:30,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-28 09:24:30,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:30,199 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:30,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:24:30,199 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:30,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:30,200 INFO L82 PathProgramCache]: Analyzing trace with hash -134406284, now seen corresponding path program 2 times [2020-10-28 09:24:30,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:30,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16787945] [2020-10-28 09:24:30,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:30,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:30,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:30,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:34,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:35,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:35,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:35,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 09:24:35,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:24:35,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:24:35,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:35,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:24:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:24:35,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 09:24:35,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:35,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:35,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:35,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:35,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:35,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:35,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:24:35,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:35,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:35,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:35,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:35,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:24:35,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:35,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 09:24:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:35,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:35,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:35,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:35,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:35,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:35,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:35,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:35,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:35,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:35,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:24:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:35,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:35,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:35,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:35,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:35,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:35,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:24:35,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:35,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 09:24:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:35,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:35,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:35,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:35,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:35,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:35,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:35,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:35,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:35,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:35,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:24:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:35,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:35,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:35,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:35,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:35,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:35,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:35,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:35,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:35,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:35,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:35,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:24:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:35,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:35,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:35,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:35,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:35,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:35,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:35,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:35,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:35,398 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-28 09:24:35,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16787945] [2020-10-28 09:24:35,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:35,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:24:35,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159720788] [2020-10-28 09:24:35,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:24:35,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:35,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:24:35,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:24:35,400 INFO L87 Difference]: Start difference. First operand 112 states and 135 transitions. Second operand 10 states. [2020-10-28 09:24:36,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:36,090 INFO L93 Difference]: Finished difference Result 175 states and 210 transitions. [2020-10-28 09:24:36,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:24:36,091 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-10-28 09:24:36,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:36,092 INFO L225 Difference]: With dead ends: 175 [2020-10-28 09:24:36,092 INFO L226 Difference]: Without dead ends: 163 [2020-10-28 09:24:36,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=314, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:24:36,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-28 09:24:36,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 112. [2020-10-28 09:24:36,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-28 09:24:36,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 135 transitions. [2020-10-28 09:24:36,114 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 135 transitions. Word has length 83 [2020-10-28 09:24:36,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:36,114 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 135 transitions. [2020-10-28 09:24:36,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:24:36,115 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 135 transitions. [2020-10-28 09:24:36,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 09:24:36,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:36,117 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:36,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:24:36,117 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:36,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:36,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1006870330, now seen corresponding path program 3 times [2020-10-28 09:24:36,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:36,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732839238] [2020-10-28 09:24:36,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:36,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:36,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:36,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:37,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:37,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:41,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:41,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 09:24:41,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:24:41,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:24:41,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:41,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:24:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:24:41,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 09:24:41,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:41,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:41,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:41,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:41,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:41,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:41,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:24:41,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:41,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:41,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:24:41,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:41,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 09:24:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:41,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:41,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:41,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:41,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:41,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:41,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:41,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:41,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:24:41,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:41,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:41,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:41,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:41,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:41,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:41,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:41,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:41,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:41,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:24:41,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:41,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 09:24:41,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:41,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:41,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:41,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:41,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:41,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:41,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:41,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:41,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:41,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:41,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:24:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:41,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:41,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:41,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:41,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:41,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:41,318 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 09:24:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:41,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:41,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:41,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:41,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:41,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:41,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:41,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-28 09:24:41,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732839238] [2020-10-28 09:24:41,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:41,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:24:41,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419486609] [2020-10-28 09:24:41,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:24:41,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:41,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:24:41,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:24:41,344 INFO L87 Difference]: Start difference. First operand 112 states and 135 transitions. Second operand 11 states. [2020-10-28 09:24:42,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:42,163 INFO L93 Difference]: Finished difference Result 278 states and 339 transitions. [2020-10-28 09:24:42,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:24:42,164 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-10-28 09:24:42,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:42,165 INFO L225 Difference]: With dead ends: 278 [2020-10-28 09:24:42,165 INFO L226 Difference]: Without dead ends: 181 [2020-10-28 09:24:42,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:24:42,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-28 09:24:42,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 116. [2020-10-28 09:24:42,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-28 09:24:42,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2020-10-28 09:24:42,196 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 139 transitions. Word has length 84 [2020-10-28 09:24:42,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:42,197 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 139 transitions. [2020-10-28 09:24:42,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:24:42,197 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 139 transitions. [2020-10-28 09:24:42,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 09:24:42,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:42,199 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:42,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:24:42,199 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:42,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:42,201 INFO L82 PathProgramCache]: Analyzing trace with hash -1908264778, now seen corresponding path program 3 times [2020-10-28 09:24:42,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:42,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991634160] [2020-10-28 09:24:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:42,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:42,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:42,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:44,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:45,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:47,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:47,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 09:24:47,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:24:47,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:24:47,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:47,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:24:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:24:47,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 09:24:47,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:47,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:47,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:47,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:47,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:47,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:47,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:24:47,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:47,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:47,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:24:47,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:47,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 09:24:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:47,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:47,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:47,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:47,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:47,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:47,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:47,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:47,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:47,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:47,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 09:24:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:47,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:47,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:47,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:47,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:47,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:47,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:47,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:47,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:24:47,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:47,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 09:24:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:47,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:47,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:47,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:47,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:47,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:47,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:47,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:47,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:47,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:47,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:24:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:47,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:47,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:47,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:47,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:47,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:47,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:47,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:47,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:47,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:47,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:47,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:47,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:24:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:47,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:47,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:47,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:47,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:47,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:47,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:47,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:47,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:47,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:47,412 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 09:24:47,412 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991634160] [2020-10-28 09:24:47,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:47,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:24:47,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359588474] [2020-10-28 09:24:47,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:24:47,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:47,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:24:47,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:24:47,414 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. Second operand 10 states. [2020-10-28 09:24:48,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:48,262 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2020-10-28 09:24:48,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:24:48,262 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 86 [2020-10-28 09:24:48,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:48,264 INFO L225 Difference]: With dead ends: 180 [2020-10-28 09:24:48,264 INFO L226 Difference]: Without dead ends: 168 [2020-10-28 09:24:48,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:24:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-28 09:24:48,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 116. [2020-10-28 09:24:48,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-28 09:24:48,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2020-10-28 09:24:48,279 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 139 transitions. Word has length 86 [2020-10-28 09:24:48,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:48,279 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 139 transitions. [2020-10-28 09:24:48,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:24:48,279 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 139 transitions. [2020-10-28 09:24:48,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 09:24:48,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:48,281 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:48,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:24:48,281 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:48,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:48,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1074699212, now seen corresponding path program 4 times [2020-10-28 09:24:48,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:48,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621804535] [2020-10-28 09:24:48,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:48,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:48,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:48,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:48,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:48,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:49,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:53,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:53,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 09:24:53,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:24:53,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:24:53,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:53,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:53,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:24:53,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:24:53,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 09:24:53,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:53,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:53,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:53,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:53,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:53,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:53,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:24:53,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:53,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:53,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:53,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:53,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:24:53,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:53,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 09:24:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:53,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:53,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:53,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:53,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:53,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:53,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:53,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:53,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:53,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:53,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:53,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 09:24:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:53,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:53,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:53,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:53,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:24:53,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:53,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:53,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:24:53,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:53,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 09:24:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:53,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:53,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:53,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:53,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:53,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:53,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:53,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:53,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:53,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:24:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:53,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:53,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:53,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:53,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:53,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:53,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:53,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:24:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:53,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:53,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:53,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:53,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:53,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:24:53,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:53,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:53,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:53,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 09:24:53,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621804535] [2020-10-28 09:24:53,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:53,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:24:53,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889042350] [2020-10-28 09:24:53,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:24:53,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:53,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:24:53,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:24:53,509 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. Second operand 11 states. [2020-10-28 09:24:54,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:24:54,467 INFO L93 Difference]: Finished difference Result 198 states and 236 transitions. [2020-10-28 09:24:54,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:24:54,468 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-10-28 09:24:54,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:24:54,471 INFO L225 Difference]: With dead ends: 198 [2020-10-28 09:24:54,471 INFO L226 Difference]: Without dead ends: 186 [2020-10-28 09:24:54,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:24:54,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-28 09:24:54,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 116. [2020-10-28 09:24:54,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-28 09:24:54,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2020-10-28 09:24:54,486 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 139 transitions. Word has length 87 [2020-10-28 09:24:54,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:24:54,486 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 139 transitions. [2020-10-28 09:24:54,486 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:24:54,487 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 139 transitions. [2020-10-28 09:24:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 09:24:54,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:24:54,488 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:24:54,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:24:54,489 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:24:54,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:24:54,489 INFO L82 PathProgramCache]: Analyzing trace with hash -546789042, now seen corresponding path program 2 times [2020-10-28 09:24:54,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:24:54,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994274829] [2020-10-28 09:24:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:24:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:54,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:54,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:54,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:57,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:57,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:59,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:59,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 09:24:59,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 09:24:59,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 09:24:59,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:59,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:24:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:24:59,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 09:24:59,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:59,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:24:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:59,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:59,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:59,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:59,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:59,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:24:59,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:59,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:59,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:59,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:59,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:24:59,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:59,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 09:24:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:59,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:59,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:59,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:59,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:59,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:59,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:59,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:59,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 09:24:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:59,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:59,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:59,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:24:59,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:59,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:24:59,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:59,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:59,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:59,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:59,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:24:59,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:59,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 09:24:59,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:59,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:59,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:59,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:59,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:59,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:59,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:59,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:59,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:59,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:59,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:24:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:59,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:59,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:59,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:59,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:24:59,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:59,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:59,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:59,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:24:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:24:59,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:24:59,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:24:59,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:24:59,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:24:59,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:24:59,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:24:59,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:24:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:24:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:24:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:24:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:24:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 09:24:59,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994274829] [2020-10-28 09:24:59,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:24:59,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:24:59,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620466510] [2020-10-28 09:24:59,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:24:59,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:24:59,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:24:59,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:24:59,724 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. Second operand 10 states. [2020-10-28 09:25:00,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:00,503 INFO L93 Difference]: Finished difference Result 180 states and 215 transitions. [2020-10-28 09:25:00,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:25:00,507 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-10-28 09:25:00,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:00,508 INFO L225 Difference]: With dead ends: 180 [2020-10-28 09:25:00,508 INFO L226 Difference]: Without dead ends: 168 [2020-10-28 09:25:00,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:25:00,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-28 09:25:00,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 122. [2020-10-28 09:25:00,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-28 09:25:00,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 146 transitions. [2020-10-28 09:25:00,522 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 146 transitions. Word has length 87 [2020-10-28 09:25:00,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:00,523 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 146 transitions. [2020-10-28 09:25:00,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:25:00,523 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 146 transitions. [2020-10-28 09:25:00,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 09:25:00,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:00,524 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:00,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:25:00,524 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:00,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:00,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1115345790, now seen corresponding path program 4 times [2020-10-28 09:25:00,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:00,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821277326] [2020-10-28 09:25:00,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:00,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:00,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:00,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:00,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:01,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:01,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:04,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:05,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:05,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:05,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 09:25:05,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:25:05,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 09:25:05,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:05,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:25:05,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:25:05,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 09:25:05,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:05,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:05,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:05,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:05,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:05,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:05,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:25:05,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:05,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:05,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:05,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:05,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:25:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:05,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 09:25:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:05,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:05,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:05,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:05,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:05,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:05,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:05,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:05,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:05,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:05,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 09:25:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:05,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:05,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:05,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:05,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:05,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:05,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:05,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:05,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:25:05,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:05,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 09:25:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:05,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:05,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:05,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:05,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:05,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:05,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:05,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:05,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:05,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:05,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:05,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:05,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 09:25:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:05,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:05,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:05,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:05,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:05,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:05,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:05,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:05,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:05,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:05,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:05,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:25:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:05,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:05,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:05,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:05,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:05,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:05,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:05,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:05,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:05,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:05,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:05,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 09:25:05,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821277326] [2020-10-28 09:25:05,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:05,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:25:05,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277168776] [2020-10-28 09:25:05,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:25:05,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:05,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:25:05,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:25:05,756 INFO L87 Difference]: Start difference. First operand 122 states and 146 transitions. Second operand 12 states. [2020-10-28 09:25:06,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:06,800 INFO L93 Difference]: Finished difference Result 306 states and 371 transitions. [2020-10-28 09:25:06,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:25:06,804 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2020-10-28 09:25:06,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:06,808 INFO L225 Difference]: With dead ends: 306 [2020-10-28 09:25:06,808 INFO L226 Difference]: Without dead ends: 201 [2020-10-28 09:25:06,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:25:06,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-28 09:25:06,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 126. [2020-10-28 09:25:06,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-28 09:25:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions. [2020-10-28 09:25:06,834 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 88 [2020-10-28 09:25:06,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:06,835 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 150 transitions. [2020-10-28 09:25:06,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:25:06,835 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions. [2020-10-28 09:25:06,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 09:25:06,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:06,839 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:06,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:25:06,839 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:06,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:06,839 INFO L82 PathProgramCache]: Analyzing trace with hash -905583238, now seen corresponding path program 5 times [2020-10-28 09:25:06,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:06,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068963085] [2020-10-28 09:25:06,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:06,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:06,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:06,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:06,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:07,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:08,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:09,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:09,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:11,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:11,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-28 09:25:11,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:25:11,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:25:11,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:11,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:25:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:25:11,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 09:25:11,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:11,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:11,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:11,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:11,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:11,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:11,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:11,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:25:11,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:11,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:11,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:11,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:11,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:25:11,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:25:11,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 09:25:12,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:12,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:12,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:12,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:12,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:12,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:12,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:12,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:12,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:12,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 09:25:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:12,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:12,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:12,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:12,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:12,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:12,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:12,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:12,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:25:12,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:12,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 09:25:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:12,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:12,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:12,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:12,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:12,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:25:12,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:12,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:12,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:12,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:12,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:12,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:12,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:25:12,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:12,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:12,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:12,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:12,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:12,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:25:12,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:12,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:12,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:12,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:12,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:25:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:12,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:12,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:12,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:12,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:12,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:25:12,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:12,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:12,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:12,089 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-28 09:25:12,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068963085] [2020-10-28 09:25:12,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:12,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:25:12,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386880947] [2020-10-28 09:25:12,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:25:12,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:12,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:25:12,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:25:12,095 INFO L87 Difference]: Start difference. First operand 126 states and 150 transitions. Second operand 11 states. [2020-10-28 09:25:13,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:13,036 INFO L93 Difference]: Finished difference Result 203 states and 241 transitions. [2020-10-28 09:25:13,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:25:13,037 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 90 [2020-10-28 09:25:13,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:13,040 INFO L225 Difference]: With dead ends: 203 [2020-10-28 09:25:13,040 INFO L226 Difference]: Without dead ends: 191 [2020-10-28 09:25:13,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:25:13,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-28 09:25:13,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 126. [2020-10-28 09:25:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-28 09:25:13,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions. [2020-10-28 09:25:13,057 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 90 [2020-10-28 09:25:13,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:13,058 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 150 transitions. [2020-10-28 09:25:13,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:25:13,058 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions. [2020-10-28 09:25:13,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 09:25:13,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:13,060 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:13,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:25:13,060 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:13,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:13,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1424778764, now seen corresponding path program 6 times [2020-10-28 09:25:13,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:13,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859626726] [2020-10-28 09:25:13,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:13,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:13,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:13,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:13,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:13,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:17,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:18,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:18,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 09:25:18,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:25:18,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 09:25:18,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:18,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:18,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:25:18,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:25:18,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 09:25:18,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:18,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:18,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:18,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:18,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:18,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:18,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:25:18,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:18,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:18,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:25:18,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:18,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 09:25:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:18,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:18,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:18,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:18,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:18,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:18,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:18,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:18,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:18,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:18,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 09:25:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:18,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:18,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:18,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:18,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:18,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:18,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:18,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:18,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:25:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:18,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 09:25:18,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:18,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:18,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:18,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:18,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:18,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:18,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:18,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:18,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:18,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:18,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:18,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:25:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:18,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:18,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:18,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:18,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:18,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:25:18,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:18,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:18,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:18,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:18,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:25:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:18,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:18,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:18,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:18,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:18,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:18,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:18,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:18,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:18,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:18,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:18,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:18,305 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-28 09:25:18,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859626726] [2020-10-28 09:25:18,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:18,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:25:18,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652730303] [2020-10-28 09:25:18,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:25:18,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:18,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:25:18,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:25:18,307 INFO L87 Difference]: Start difference. First operand 126 states and 150 transitions. Second operand 12 states. [2020-10-28 09:25:19,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:19,369 INFO L93 Difference]: Finished difference Result 220 states and 261 transitions. [2020-10-28 09:25:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:25:19,370 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-10-28 09:25:19,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:19,372 INFO L225 Difference]: With dead ends: 220 [2020-10-28 09:25:19,372 INFO L226 Difference]: Without dead ends: 208 [2020-10-28 09:25:19,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:25:19,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-28 09:25:19,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 126. [2020-10-28 09:25:19,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-28 09:25:19,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions. [2020-10-28 09:25:19,389 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 91 [2020-10-28 09:25:19,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:19,390 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 150 transitions. [2020-10-28 09:25:19,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:25:19,390 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions. [2020-10-28 09:25:19,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 09:25:19,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:19,391 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:19,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 09:25:19,392 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:19,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:19,392 INFO L82 PathProgramCache]: Analyzing trace with hash -909246322, now seen corresponding path program 7 times [2020-10-28 09:25:19,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:19,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062662363] [2020-10-28 09:25:19,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:19,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:19,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:19,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:19,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:21,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:21,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:21,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:24,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:24,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 09:25:24,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:25:24,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 09:25:24,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:24,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:24,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:25:24,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:25:24,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 09:25:24,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:24,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:24,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:24,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:24,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:24,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:24,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:25:24,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:24,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:24,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:24,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:25:24,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:24,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 09:25:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:24,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:24,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:24,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:24,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:24,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:24,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:24,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:24,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:24,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:24,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 09:25:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:24,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:24,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:24,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:24,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:24,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:24,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:24,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:24,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:24,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:24,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:25:24,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:24,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 09:25:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:24,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:24,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:24,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:24,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:24,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:25:24,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:24,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:24,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:24,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:25:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:24,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:24,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:24,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:24,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:24,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:25:24,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:24,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:24,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:24,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:24,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:25:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:24,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:24,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:24,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:24,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:25:24,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:24,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:24,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:24,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:24,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-28 09:25:24,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062662363] [2020-10-28 09:25:24,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:24,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:25:24,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196897171] [2020-10-28 09:25:24,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:25:24,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:24,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:25:24,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:25:24,616 INFO L87 Difference]: Start difference. First operand 126 states and 150 transitions. Second operand 11 states. [2020-10-28 09:25:25,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:25,564 INFO L93 Difference]: Finished difference Result 202 states and 240 transitions. [2020-10-28 09:25:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:25:25,565 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 91 [2020-10-28 09:25:25,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:25,568 INFO L225 Difference]: With dead ends: 202 [2020-10-28 09:25:25,568 INFO L226 Difference]: Without dead ends: 190 [2020-10-28 09:25:25,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:25:25,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-28 09:25:25,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 126. [2020-10-28 09:25:25,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-28 09:25:25,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 150 transitions. [2020-10-28 09:25:25,583 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 150 transitions. Word has length 91 [2020-10-28 09:25:25,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:25,583 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 150 transitions. [2020-10-28 09:25:25,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:25:25,583 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 150 transitions. [2020-10-28 09:25:25,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 09:25:25,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:25,585 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:25,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 09:25:25,585 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:25,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:25,586 INFO L82 PathProgramCache]: Analyzing trace with hash 508429762, now seen corresponding path program 5 times [2020-10-28 09:25:25,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:25,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077800286] [2020-10-28 09:25:25,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:25,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:25,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:25,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:26,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:26,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:26,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:26,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:28,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:29,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:30,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:30,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 09:25:30,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:25:30,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 09:25:30,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:30,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:30,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:25:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:25:30,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 09:25:30,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:30,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:30,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:30,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:30,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:30,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:30,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:25:30,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:30,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:30,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:25:30,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:30,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 09:25:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:30,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:30,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:30,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:30,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:30,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:30,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:30,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:30,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:30,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:30,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:30,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:30,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 09:25:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:30,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:30,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:30,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:30,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:30,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:30,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:30,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:30,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:25:30,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:30,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 09:25:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:30,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:30,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:30,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:30,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:30,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:30,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:30,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:30,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:30,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:25:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:30,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:30,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:30,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:30,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:30,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:25:30,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:30,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:30,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:30,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 09:25:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:30,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:30,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:30,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:30,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:30,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:25:30,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:30,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:30,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:30,834 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-28 09:25:30,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077800286] [2020-10-28 09:25:30,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:30,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:25:30,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139302998] [2020-10-28 09:25:30,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:25:30,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:30,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:25:30,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:25:30,837 INFO L87 Difference]: Start difference. First operand 126 states and 150 transitions. Second operand 13 states. [2020-10-28 09:25:32,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:32,036 INFO L93 Difference]: Finished difference Result 328 states and 396 transitions. [2020-10-28 09:25:32,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:25:32,037 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 92 [2020-10-28 09:25:32,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:32,039 INFO L225 Difference]: With dead ends: 328 [2020-10-28 09:25:32,040 INFO L226 Difference]: Without dead ends: 221 [2020-10-28 09:25:32,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=248, Invalid=682, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:25:32,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-28 09:25:32,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 130. [2020-10-28 09:25:32,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-28 09:25:32,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2020-10-28 09:25:32,058 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 92 [2020-10-28 09:25:32,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:32,059 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2020-10-28 09:25:32,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:25:32,059 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2020-10-28 09:25:32,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 09:25:32,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:32,060 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:32,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 09:25:32,060 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:32,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:32,061 INFO L82 PathProgramCache]: Analyzing trace with hash -2080131010, now seen corresponding path program 8 times [2020-10-28 09:25:32,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:32,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253383209] [2020-10-28 09:25:32,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:32,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:32,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:32,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:32,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:32,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:32,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:32,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:32,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:32,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:33,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:33,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:35,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:37,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:37,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 09:25:37,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 09:25:37,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 09:25:37,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:37,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:25:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:25:37,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 09:25:37,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:37,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:37,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:37,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:37,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:37,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:25:37,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:37,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:25:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:37,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:25:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:37,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:37,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:37,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:37,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:37,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:37,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:37,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:37,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:37,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:37,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:37,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:37,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:25:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:37,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:37,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:37,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:37,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:37,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:37,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:37,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:37,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:37,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:37,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:25:37,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:37,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:25:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:37,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:37,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:37,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:37,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:37,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:37,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:37,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:37,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:37,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:37,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:37,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:37,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 09:25:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:37,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:37,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:37,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:37,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:37,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:37,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:37,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:37,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:37,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:37,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:37,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:37,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:25:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:37,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:37,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:37,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:37,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:37,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:37,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:37,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:37,283 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 09:25:37,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253383209] [2020-10-28 09:25:37,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:37,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:25:37,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112496215] [2020-10-28 09:25:37,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:25:37,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:37,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:25:37,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:25:37,284 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand 12 states. [2020-10-28 09:25:38,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:38,386 INFO L93 Difference]: Finished difference Result 227 states and 268 transitions. [2020-10-28 09:25:38,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:25:38,387 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-10-28 09:25:38,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:38,389 INFO L225 Difference]: With dead ends: 227 [2020-10-28 09:25:38,389 INFO L226 Difference]: Without dead ends: 215 [2020-10-28 09:25:38,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=218, Invalid=652, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:25:38,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-28 09:25:38,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 130. [2020-10-28 09:25:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-28 09:25:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2020-10-28 09:25:38,415 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 94 [2020-10-28 09:25:38,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:38,415 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2020-10-28 09:25:38,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:25:38,415 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2020-10-28 09:25:38,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 09:25:38,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:38,416 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:38,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:25:38,417 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:38,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:38,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1552220840, now seen corresponding path program 3 times [2020-10-28 09:25:38,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:38,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950859935] [2020-10-28 09:25:38,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:38,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:38,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:38,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:38,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:38,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:38,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:41,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:41,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:41,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:43,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:43,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 09:25:43,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:25:43,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:25:43,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:43,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:43,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:25:43,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:25:43,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 09:25:43,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:43,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:43,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:43,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:43,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:43,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:43,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:25:43,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:43,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:43,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:43,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:43,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:25:43,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:43,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:25:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:43,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:43,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:43,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:43,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:43,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:43,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:43,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:43,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:43,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:43,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:43,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:25:43,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:43,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:43,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:43,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:43,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:43,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:43,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:43,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:43,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:43,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:43,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:25:43,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:43,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:25:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:43,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:43,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:43,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:43,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:43,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:25:43,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:43,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:43,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:43,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 09:25:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:43,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:43,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:43,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:43,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:43,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:25:43,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:43,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:43,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:43,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:43,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:43,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:43,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:25:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:43,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:43,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:43,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:43,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:43,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:25:43,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:43,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:43,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:43,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:43,646 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 09:25:43,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950859935] [2020-10-28 09:25:43,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:43,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:25:43,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014417534] [2020-10-28 09:25:43,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:25:43,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:43,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:25:43,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:25:43,647 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand 11 states. [2020-10-28 09:25:44,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:44,589 INFO L93 Difference]: Finished difference Result 204 states and 242 transitions. [2020-10-28 09:25:44,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:25:44,590 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-10-28 09:25:44,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:44,592 INFO L225 Difference]: With dead ends: 204 [2020-10-28 09:25:44,592 INFO L226 Difference]: Without dead ends: 192 [2020-10-28 09:25:44,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=529, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:25:44,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-28 09:25:44,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 136. [2020-10-28 09:25:44,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-28 09:25:44,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 161 transitions. [2020-10-28 09:25:44,608 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 161 transitions. Word has length 94 [2020-10-28 09:25:44,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:44,608 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 161 transitions. [2020-10-28 09:25:44,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:25:44,608 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 161 transitions. [2020-10-28 09:25:44,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 09:25:44,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:44,609 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:44,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:25:44,610 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:44,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:44,610 INFO L82 PathProgramCache]: Analyzing trace with hash 11731124, now seen corresponding path program 9 times [2020-10-28 09:25:44,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:44,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795671538] [2020-10-28 09:25:44,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:44,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:44,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:44,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:44,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:45,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:45,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:46,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:47,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:47,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:49,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:49,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 09:25:49,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 09:25:49,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:25:49,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:49,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:25:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:25:49,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 09:25:49,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:49,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:49,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:49,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:49,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:49,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:49,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:25:49,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:49,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:49,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:25:49,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:49,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:25:49,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:49,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:49,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:49,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:49,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:49,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:49,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:49,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:49,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:25:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:49,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:49,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:49,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:49,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:49,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:49,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:49,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:25:49,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:49,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:25:49,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:49,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:49,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:49,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:49,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:49,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:49,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:49,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:49,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:49,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:49,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 09:25:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:49,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:49,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:49,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:49,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:49,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:25:49,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:49,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:49,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:49,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:49,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:49,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:25:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:49,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:49,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:49,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:49,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:49,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:49,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:49,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:49,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:49,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:49,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:49,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:49,856 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 09:25:49,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795671538] [2020-10-28 09:25:49,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:49,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:25:49,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182046965] [2020-10-28 09:25:49,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:25:49,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:49,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:25:49,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:25:49,858 INFO L87 Difference]: Start difference. First operand 136 states and 161 transitions. Second operand 13 states. [2020-10-28 09:25:51,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:51,078 INFO L93 Difference]: Finished difference Result 242 states and 286 transitions. [2020-10-28 09:25:51,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:25:51,078 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 95 [2020-10-28 09:25:51,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:51,080 INFO L225 Difference]: With dead ends: 242 [2020-10-28 09:25:51,080 INFO L226 Difference]: Without dead ends: 230 [2020-10-28 09:25:51,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:25:51,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-28 09:25:51,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 136. [2020-10-28 09:25:51,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-28 09:25:51,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 161 transitions. [2020-10-28 09:25:51,100 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 161 transitions. Word has length 95 [2020-10-28 09:25:51,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:51,100 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 161 transitions. [2020-10-28 09:25:51,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:25:51,100 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 161 transitions. [2020-10-28 09:25:51,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 09:25:51,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:51,101 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:51,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:25:51,102 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:51,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:51,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1517168846, now seen corresponding path program 10 times [2020-10-28 09:25:51,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:51,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209635491] [2020-10-28 09:25:51,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:51,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:51,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:51,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:54,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:54,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:54,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:56,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:56,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 09:25:56,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:25:56,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 09:25:56,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:56,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:56,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:25:56,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:25:56,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 09:25:56,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:56,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:25:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:56,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:56,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:56,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:56,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:56,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:25:56,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:56,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:56,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:56,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:56,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:25:56,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:56,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:25:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:56,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:56,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:56,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:56,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:56,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:56,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:56,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:56,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:56,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:56,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:56,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:25:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:56,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:56,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:56,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:25:56,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:56,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:56,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:56,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:56,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:25:56,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:56,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:25:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:56,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:56,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:56,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:56,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:56,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:25:56,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:56,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:56,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:56,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 09:25:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:56,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:56,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:56,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:56,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:56,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:56,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:56,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:56,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:56,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:56,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:25:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:56,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:56,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:25:56,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:25:56,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:25:56,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:25:56,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:25:56,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:25:56,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:25:56,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:25:56,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:25:56,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:25:56,322 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 09:25:56,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209635491] [2020-10-28 09:25:56,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:25:56,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:25:56,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623400103] [2020-10-28 09:25:56,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:25:56,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:25:56,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:25:56,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:25:56,324 INFO L87 Difference]: Start difference. First operand 136 states and 161 transitions. Second operand 12 states. [2020-10-28 09:25:57,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:25:57,432 INFO L93 Difference]: Finished difference Result 227 states and 268 transitions. [2020-10-28 09:25:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:25:57,433 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 95 [2020-10-28 09:25:57,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:25:57,434 INFO L225 Difference]: With dead ends: 227 [2020-10-28 09:25:57,434 INFO L226 Difference]: Without dead ends: 215 [2020-10-28 09:25:57,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2020-10-28 09:25:57,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-10-28 09:25:57,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 136. [2020-10-28 09:25:57,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-28 09:25:57,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 161 transitions. [2020-10-28 09:25:57,459 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 161 transitions. Word has length 95 [2020-10-28 09:25:57,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:25:57,459 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 161 transitions. [2020-10-28 09:25:57,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:25:57,460 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 161 transitions. [2020-10-28 09:25:57,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 09:25:57,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:25:57,461 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:25:57,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:25:57,463 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:25:57,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:25:57,463 INFO L82 PathProgramCache]: Analyzing trace with hash -295815674, now seen corresponding path program 6 times [2020-10-28 09:25:57,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:25:57,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1852781009] [2020-10-28 09:25:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:25:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:25:57,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:57,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:57,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:58,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:25:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:00,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:00,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:01,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:01,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:01,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:02,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:02,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 09:26:02,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 09:26:02,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:26:02,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:02,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:02,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 09:26:02,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:26:02,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 09:26:02,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:02,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:02,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:02,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:02,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:02,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:02,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:26:02,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:02,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:26:02,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:02,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:26:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:02,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:02,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:02,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:02,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:02,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:02,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:02,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:02,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:02,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:02,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:26:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:02,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:02,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:02,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:02,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:02,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:02,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:02,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:26:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:02,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:26:02,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:02,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:02,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:02,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:02,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:02,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:02,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:02,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:02,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:02,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:02,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:02,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:02,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 09:26:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:02,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:02,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:02,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:02,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:02,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:02,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:02,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:02,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:02,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:02,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:02,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:02,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:26:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:02,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:02,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:02,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:02,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:26:02,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:02,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:02,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-28 09:26:02,662 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1852781009] [2020-10-28 09:26:02,662 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:02,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 09:26:02,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363996707] [2020-10-28 09:26:02,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 09:26:02,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:02,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 09:26:02,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-28 09:26:02,664 INFO L87 Difference]: Start difference. First operand 136 states and 161 transitions. Second operand 10 states. [2020-10-28 09:26:03,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:03,253 INFO L93 Difference]: Finished difference Result 216 states and 259 transitions. [2020-10-28 09:26:03,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:26:03,254 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-10-28 09:26:03,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:03,256 INFO L225 Difference]: With dead ends: 216 [2020-10-28 09:26:03,256 INFO L226 Difference]: Without dead ends: 153 [2020-10-28 09:26:03,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:26:03,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-28 09:26:03,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 145. [2020-10-28 09:26:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-28 09:26:03,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 175 transitions. [2020-10-28 09:26:03,276 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 175 transitions. Word has length 96 [2020-10-28 09:26:03,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:03,276 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 175 transitions. [2020-10-28 09:26:03,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 09:26:03,277 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 175 transitions. [2020-10-28 09:26:03,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 09:26:03,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:03,278 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:03,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:26:03,278 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:03,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:03,279 INFO L82 PathProgramCache]: Analyzing trace with hash -553360237, now seen corresponding path program 7 times [2020-10-28 09:26:03,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:03,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795448891] [2020-10-28 09:26:03,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:03,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:03,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:03,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:03,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:04,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:04,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:05,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:06,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:08,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:08,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 09:26:08,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:26:08,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:26:08,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:08,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 09:26:08,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:26:08,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 09:26:08,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:08,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:08,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:08,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:08,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:08,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:08,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:26:08,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:08,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:08,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:26:08,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:08,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:26:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:08,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:08,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:08,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:08,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:08,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:08,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:08,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:08,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:08,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:08,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:26:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:08,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:08,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:08,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:08,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:08,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:08,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:08,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:26:08,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:08,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:26:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:08,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:08,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:08,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:08,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:08,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:08,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:08,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:08,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:08,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:08,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:08,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:08,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 09:26:08,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:08,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:08,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:08,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:08,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:08,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:08,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:08,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:08,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:08,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:08,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:26:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:08,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:08,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:08,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:08,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:08,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:26:08,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:08,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:08,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:08,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:08,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:08,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:26:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:08,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:08,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:08,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:08,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:08,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:08,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:08,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:08,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:08,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-28 09:26:08,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795448891] [2020-10-28 09:26:08,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:08,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 09:26:08,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183676692] [2020-10-28 09:26:08,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 09:26:08,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:08,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 09:26:08,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-28 09:26:08,504 INFO L87 Difference]: Start difference. First operand 145 states and 175 transitions. Second operand 11 states. [2020-10-28 09:26:09,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:09,127 INFO L93 Difference]: Finished difference Result 225 states and 273 transitions. [2020-10-28 09:26:09,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 09:26:09,128 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 106 [2020-10-28 09:26:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:09,131 INFO L225 Difference]: With dead ends: 225 [2020-10-28 09:26:09,131 INFO L226 Difference]: Without dead ends: 162 [2020-10-28 09:26:09,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:26:09,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-28 09:26:09,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2020-10-28 09:26:09,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-28 09:26:09,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 189 transitions. [2020-10-28 09:26:09,147 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 189 transitions. Word has length 106 [2020-10-28 09:26:09,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:09,147 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 189 transitions. [2020-10-28 09:26:09,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 09:26:09,148 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 189 transitions. [2020-10-28 09:26:09,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 09:26:09,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:09,149 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:09,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 09:26:09,149 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:09,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:09,150 INFO L82 PathProgramCache]: Analyzing trace with hash -767588640, now seen corresponding path program 8 times [2020-10-28 09:26:09,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:09,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334256401] [2020-10-28 09:26:09,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:09,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:09,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:09,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:10,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:14,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:14,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 09:26:14,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:26:14,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 09:26:14,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:14,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:14,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:26:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:26:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 09:26:14,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:14,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:14,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:14,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:14,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:14,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:14,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:26:14,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:14,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:14,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:14,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:14,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:26:14,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:14,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:26:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:14,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:14,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:14,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:14,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:14,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:14,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:14,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:14,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:14,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:14,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:26:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:14,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:14,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:14,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:14,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:14,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:14,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:14,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:14,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:26:14,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:14,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:26:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:14,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:14,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:14,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:14,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:14,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:14,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:14,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:14,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:14,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:14,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 09:26:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:14,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:14,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:14,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:14,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:14,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:14,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:14,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:14,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:14,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:14,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:26:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:14,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:14,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:14,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:14,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:14,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:14,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:14,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:14,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:14,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:14,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:14,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:14,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:26:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:14,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:14,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:14,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:14,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:14,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:14,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:14,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:14,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:14,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:14,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:26:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:14,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:14,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:14,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:14,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:14,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:14,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:14,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:14,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:14,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-10-28 09:26:14,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334256401] [2020-10-28 09:26:14,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:14,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:26:14,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031162058] [2020-10-28 09:26:14,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:26:14,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:14,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:26:14,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:26:14,416 INFO L87 Difference]: Start difference. First operand 154 states and 189 transitions. Second operand 12 states. [2020-10-28 09:26:15,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:15,141 INFO L93 Difference]: Finished difference Result 234 states and 287 transitions. [2020-10-28 09:26:15,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:26:15,142 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 116 [2020-10-28 09:26:15,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:15,143 INFO L225 Difference]: With dead ends: 234 [2020-10-28 09:26:15,144 INFO L226 Difference]: Without dead ends: 171 [2020-10-28 09:26:15,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:26:15,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-28 09:26:15,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 163. [2020-10-28 09:26:15,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-28 09:26:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 203 transitions. [2020-10-28 09:26:15,166 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 203 transitions. Word has length 116 [2020-10-28 09:26:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:15,166 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 203 transitions. [2020-10-28 09:26:15,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:26:15,167 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 203 transitions. [2020-10-28 09:26:15,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 09:26:15,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:15,170 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:15,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 09:26:15,170 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:15,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:15,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1614933229, now seen corresponding path program 9 times [2020-10-28 09:26:15,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:15,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563454176] [2020-10-28 09:26:15,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:15,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:15,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:17,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:20,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:20,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 09:26:20,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:26:20,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:26:20,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:20,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:26:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:26:20,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 09:26:20,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:20,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:20,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:20,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:20,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:20,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:20,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:26:20,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:20,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:20,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:20,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:20,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:26:20,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:20,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 09:26:20,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:20,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:20,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:20,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:20,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:20,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:20,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:20,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:20,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:20,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:20,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:20,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:20,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 09:26:20,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:20,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:20,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:20,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:20,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:20,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:20,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:20,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:20,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:26:20,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:20,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:26:20,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:20,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:20,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:20,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:20,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:20,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:20,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:20,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:20,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:20,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:20,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:20,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:20,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 09:26:20,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:20,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:20,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:20,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:20,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:20,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:20,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:20,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:20,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:20,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:20,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:26:20,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:20,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:20,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:20,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:20,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:20,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:20,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:20,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:20,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:20,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:20,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:20,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:20,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:26:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:20,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:20,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:20,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:20,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:20,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:20,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:20,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:20,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:20,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:20,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:26:20,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:20,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:20,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:20,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:20,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:20,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:26:20,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:20,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:20,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:20,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:20,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:20,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:20,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:26:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:20,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:20,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:20,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:20,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:20,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:20,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:20,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:20,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:20,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:20,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:20,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:20,472 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-10-28 09:26:20,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563454176] [2020-10-28 09:26:20,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:20,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:26:20,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420476678] [2020-10-28 09:26:20,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:26:20,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:20,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:26:20,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:26:20,473 INFO L87 Difference]: Start difference. First operand 163 states and 203 transitions. Second operand 14 states. [2020-10-28 09:26:21,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:21,690 INFO L93 Difference]: Finished difference Result 410 states and 512 transitions. [2020-10-28 09:26:21,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:26:21,691 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 126 [2020-10-28 09:26:21,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:21,693 INFO L225 Difference]: With dead ends: 410 [2020-10-28 09:26:21,693 INFO L226 Difference]: Without dead ends: 268 [2020-10-28 09:26:21,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=303, Invalid=819, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:26:21,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-28 09:26:21,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 167. [2020-10-28 09:26:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-28 09:26:21,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 207 transitions. [2020-10-28 09:26:21,720 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 207 transitions. Word has length 126 [2020-10-28 09:26:21,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:21,721 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 207 transitions. [2020-10-28 09:26:21,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:26:21,721 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 207 transitions. [2020-10-28 09:26:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 09:26:21,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:21,722 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:21,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 09:26:21,723 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:21,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1208674409, now seen corresponding path program 11 times [2020-10-28 09:26:21,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:21,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383482087] [2020-10-28 09:26:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:21,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:21,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:23,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:25,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:25,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:26,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:26,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 09:26:26,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:26:26,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:26:26,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:26,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:26,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:26:26,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:26:26,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 09:26:26,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:26,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:26,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:26,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:26,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:26,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:26,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:26:26,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:26,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:26,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:26:26,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:26,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:26:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:26,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:26,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:26,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:26,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:26,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:26,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 09:26:26,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:26,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:26,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:26,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:26,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:26,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:26,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:26,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:26:26,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:26,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:26:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:26,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:26,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:26,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:26,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:26,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:26,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:26,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:26,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:26,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:26,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:26,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:26,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:26:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:26,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:26,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:26,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:26,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:26,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:26,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:26,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:26,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:26,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:26,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:26,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:26,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 09:26:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:26,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:26,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:26,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:26,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:26,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:26,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:26,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:26,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:26,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:26,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:26:26,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:26,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:26,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:26,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:26,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:26,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:26,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:26,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:26,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:26,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:26,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:26,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:26,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:26:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:26,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:26,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:26,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:26,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:26,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:26:26,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:26,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:26,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:26,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:26,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:26:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:26,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:26,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:26,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:26,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:26,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:26,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:26,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:26,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:26,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:26,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:26,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-10-28 09:26:26,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383482087] [2020-10-28 09:26:26,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:26,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:26:26,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18921000] [2020-10-28 09:26:26,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:26:26,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:26,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:26:26,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:26:26,997 INFO L87 Difference]: Start difference. First operand 167 states and 207 transitions. Second operand 13 states. [2020-10-28 09:26:28,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:28,184 INFO L93 Difference]: Finished difference Result 278 states and 337 transitions. [2020-10-28 09:26:28,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:26:28,185 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 128 [2020-10-28 09:26:28,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:28,188 INFO L225 Difference]: With dead ends: 278 [2020-10-28 09:26:28,188 INFO L226 Difference]: Without dead ends: 266 [2020-10-28 09:26:28,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:26:28,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-28 09:26:28,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 167. [2020-10-28 09:26:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-28 09:26:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 207 transitions. [2020-10-28 09:26:28,212 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 207 transitions. Word has length 128 [2020-10-28 09:26:28,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:28,212 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 207 transitions. [2020-10-28 09:26:28,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:26:28,213 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 207 transitions. [2020-10-28 09:26:28,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 09:26:28,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:28,214 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:28,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 09:26:28,215 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:28,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:28,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1724206851, now seen corresponding path program 12 times [2020-10-28 09:26:28,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:28,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620184162] [2020-10-28 09:26:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:28,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:28,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:30,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:31,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:31,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:31,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:33,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:33,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:33,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-28 09:26:33,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 09:26:33,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 09:26:33,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:33,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:33,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:26:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:26:33,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 09:26:33,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:33,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:33,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:33,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:33,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:33,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:33,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:26:33,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:33,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:33,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:33,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:26:33,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:33,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:26:33,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:33,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:33,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:33,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:33,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:33,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:33,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:33,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:33,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:33,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:33,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:33,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 09:26:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:33,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:33,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:33,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:33,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:33,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:33,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:33,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:33,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:26:33,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:33,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:26:33,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:33,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:33,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:33,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:33,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:33,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:33,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:33,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:33,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:33,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:33,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:33,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:26:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:33,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:33,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:33,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:33,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:33,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:33,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:33,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:33,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:33,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:33,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:33,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 09:26:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:33,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:33,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:33,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:33,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:33,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:33,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:33,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:33,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:33,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:33,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:33,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:33,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:26:33,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:33,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:33,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:33,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:33,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:33,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:33,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:33,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:33,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:33,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:33,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:26:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:33,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:33,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:33,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:33,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:33,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:26:33,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:33,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:33,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:33,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:33,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:33,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:33,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:26:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:33,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:33,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:33,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:33,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:33,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:33,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:33,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:33,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:33,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:33,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:33,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:33,616 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-28 09:26:33,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620184162] [2020-10-28 09:26:33,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:33,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:26:33,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681007782] [2020-10-28 09:26:33,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:26:33,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:33,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:26:33,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:26:33,618 INFO L87 Difference]: Start difference. First operand 167 states and 207 transitions. Second operand 15 states. [2020-10-28 09:26:34,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:34,737 INFO L93 Difference]: Finished difference Result 208 states and 253 transitions. [2020-10-28 09:26:34,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:26:34,739 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 128 [2020-10-28 09:26:34,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:34,741 INFO L225 Difference]: With dead ends: 208 [2020-10-28 09:26:34,741 INFO L226 Difference]: Without dead ends: 205 [2020-10-28 09:26:34,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=148, Invalid=608, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:26:34,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-28 09:26:34,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 178. [2020-10-28 09:26:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-28 09:26:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 220 transitions. [2020-10-28 09:26:34,772 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 220 transitions. Word has length 128 [2020-10-28 09:26:34,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:34,773 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 220 transitions. [2020-10-28 09:26:34,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:26:34,773 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 220 transitions. [2020-10-28 09:26:34,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-28 09:26:34,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:34,774 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:34,774 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 09:26:34,775 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:34,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:34,775 INFO L82 PathProgramCache]: Analyzing trace with hash 541099501, now seen corresponding path program 13 times [2020-10-28 09:26:34,775 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:34,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729212763] [2020-10-28 09:26:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:34,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:34,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:34,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:37,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:38,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:38,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:39,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:39,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:39,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 09:26:39,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:26:39,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 09:26:39,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:39,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:39,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:26:39,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:26:39,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 09:26:39,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:39,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:40,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:40,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:40,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:40,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:40,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:26:40,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:40,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:40,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:26:40,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:40,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:26:40,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:40,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:40,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:40,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:40,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:40,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:40,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:40,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:40,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:40,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:40,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 09:26:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:40,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:40,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:40,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:40,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:40,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:40,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:40,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:40,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:26:40,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:40,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:26:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:40,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:40,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:40,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:40,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:40,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:40,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:40,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:26:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:40,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:40,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:40,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:40,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:40,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:26:40,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:40,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:40,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:40,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 09:26:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:40,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:40,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:40,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:40,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:40,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:40,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:40,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:40,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:40,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:40,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:40,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:26:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:40,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:40,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:40,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:40,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:40,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:40,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:40,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:40,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:40,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:40,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:26:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:40,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:40,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:40,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:40,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:40,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:40,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:40,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:40,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:26:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:40,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:40,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:40,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:40,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:40,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:40,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:40,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:40,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:40,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:40,098 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-10-28 09:26:40,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729212763] [2020-10-28 09:26:40,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:40,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:26:40,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196289089] [2020-10-28 09:26:40,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:26:40,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:40,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:26:40,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:26:40,100 INFO L87 Difference]: Start difference. First operand 178 states and 220 transitions. Second operand 14 states. [2020-10-28 09:26:41,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:41,539 INFO L93 Difference]: Finished difference Result 302 states and 366 transitions. [2020-10-28 09:26:41,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:26:41,540 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 129 [2020-10-28 09:26:41,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:41,543 INFO L225 Difference]: With dead ends: 302 [2020-10-28 09:26:41,543 INFO L226 Difference]: Without dead ends: 290 [2020-10-28 09:26:41,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:26:41,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-28 09:26:41,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 178. [2020-10-28 09:26:41,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-28 09:26:41,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 220 transitions. [2020-10-28 09:26:41,576 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 220 transitions. Word has length 129 [2020-10-28 09:26:41,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:41,576 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 220 transitions. [2020-10-28 09:26:41,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:26:41,577 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 220 transitions. [2020-10-28 09:26:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-28 09:26:41,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:41,578 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:41,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 09:26:41,578 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:41,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:41,579 INFO L82 PathProgramCache]: Analyzing trace with hash -137228409, now seen corresponding path program 14 times [2020-10-28 09:26:41,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:41,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1697756116] [2020-10-28 09:26:41,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:41,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:41,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:43,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:44,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:44,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:45,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:46,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 09:26:46,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 09:26:46,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 09:26:46,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:46,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:26:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 09:26:46,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 09:26:46,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:46,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:26:46,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:46,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:46,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:46,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:46,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:26:46,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:46,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:46,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:26:46,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:46,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-28 09:26:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:46,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:46,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:46,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:46,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:46,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:46,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:46,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:46,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 09:26:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:46,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:46,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:26:46,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:46,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:26:46,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:46,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:46,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 09:26:46,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:46,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 09:26:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:46,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:46,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:46,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:46,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:46,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:46,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:46,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:46,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:46,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:46,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:46,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:26:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:46,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:46,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:46,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:46,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:46,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:46,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:46,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:46,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:46,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:46,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 09:26:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:46,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:46,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:46,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:46,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:26:46,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:46,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:46,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:46,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:46,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:46,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:26:46,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:46,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:46,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:46,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:46,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:26:46,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:46,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:46,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:46,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:46,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:26:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:46,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:46,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:46,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:46,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:26:46,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:46,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:46,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:46,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:46,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:26:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:46,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:46,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:26:46,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 09:26:46,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:26:46,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:26:46,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:26:46,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:26:46,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:26:46,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:26:46,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 09:26:46,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:26:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-10-28 09:26:46,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1697756116] [2020-10-28 09:26:46,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:26:46,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:26:46,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287351054] [2020-10-28 09:26:46,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:26:46,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:26:46,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:26:46,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:26:46,863 INFO L87 Difference]: Start difference. First operand 178 states and 220 transitions. Second operand 13 states. [2020-10-28 09:26:48,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:26:48,067 INFO L93 Difference]: Finished difference Result 288 states and 349 transitions. [2020-10-28 09:26:48,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:26:48,068 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 129 [2020-10-28 09:26:48,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:26:48,070 INFO L225 Difference]: With dead ends: 288 [2020-10-28 09:26:48,070 INFO L226 Difference]: Without dead ends: 276 [2020-10-28 09:26:48,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:26:48,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-28 09:26:48,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 178. [2020-10-28 09:26:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-28 09:26:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 220 transitions. [2020-10-28 09:26:48,103 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 220 transitions. Word has length 129 [2020-10-28 09:26:48,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:26:48,103 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 220 transitions. [2020-10-28 09:26:48,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:26:48,103 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 220 transitions. [2020-10-28 09:26:48,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 09:26:48,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:26:48,105 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:26:48,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 09:26:48,105 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:26:48,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:26:48,106 INFO L82 PathProgramCache]: Analyzing trace with hash -862951951, now seen corresponding path program 10 times [2020-10-28 09:26:48,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:26:48,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233855278] [2020-10-28 09:26:48,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:26:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:26:48,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:48,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:26:48,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking...