/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/eca-rers2012/Problem16_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:19:23,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:19:23,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:19:23,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:19:23,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:19:23,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:19:23,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:19:23,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:19:23,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:19:23,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:19:23,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:19:23,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:19:23,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:19:23,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:19:23,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:19:23,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:19:23,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:19:23,524 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:19:23,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:19:23,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:19:23,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:19:23,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:19:23,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:19:23,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:19:23,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:19:23,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:19:23,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:19:23,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:19:23,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:19:23,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:19:23,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:19:23,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:19:23,585 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:19:23,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:19:23,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:19:23,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:19:23,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:19:23,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:19:23,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:19:23,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:19:23,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:19:23,600 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 13:19:23,654 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:19:23,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:19:23,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:19:23,661 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:19:23,661 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:19:23,661 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:19:23,662 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:19:23,662 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:19:23,662 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:19:23,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:19:23,663 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:19:23,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:19:23,664 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:19:23,664 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:19:23,664 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:19:23,665 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:19:23,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:19:23,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:19:23,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:19:23,665 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:19:23,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:19:23,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:19:23,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:19:23,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:19:23,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:19:23,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:19:23,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:19:23,667 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:19:23,667 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:19:23,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:19:24,130 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:19:24,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:19:24,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:19:24,180 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:19:24,181 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:19:24,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label21.c [2020-10-28 13:19:24,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60f2607d2/2ea30d2d958e49809ed9d67c2d899c97/FLAG9f45425ea [2020-10-28 13:19:25,186 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:19:25,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label21.c [2020-10-28 13:19:25,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60f2607d2/2ea30d2d958e49809ed9d67c2d899c97/FLAG9f45425ea [2020-10-28 13:19:25,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/60f2607d2/2ea30d2d958e49809ed9d67c2d899c97 [2020-10-28 13:19:25,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:19:25,328 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:19:25,330 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:19:25,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:19:25,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:19:25,335 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:19:25" (1/1) ... [2020-10-28 13:19:25,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b0f4754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:25, skipping insertion in model container [2020-10-28 13:19:25,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:19:25" (1/1) ... [2020-10-28 13:19:25,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:19:25,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:19:26,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:19:26,380 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:19:26,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:19:26,701 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:19:26,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:26 WrapperNode [2020-10-28 13:19:26,703 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:19:26,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:19:26,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:19:26,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:19:26,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:26" (1/1) ... [2020-10-28 13:19:26,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:26" (1/1) ... [2020-10-28 13:19:26,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:26" (1/1) ... [2020-10-28 13:19:26,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:26" (1/1) ... [2020-10-28 13:19:26,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:26" (1/1) ... [2020-10-28 13:19:26,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:26" (1/1) ... [2020-10-28 13:19:26,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:26" (1/1) ... [2020-10-28 13:19:26,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:19:26,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:19:26,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:19:26,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:19:26,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:26" (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 13:19:27,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:19:27,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:19:27,061 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:19:27,061 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:19:27,061 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:19:27,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:19:27,062 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:19:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:19:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:19:27,063 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:19:27,064 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:19:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:19:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:19:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:19:27,065 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:19:27,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:19:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:19:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:19:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:19:27,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:19:27,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:19:29,727 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:19:29,728 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:19:29,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:19:29 BoogieIcfgContainer [2020-10-28 13:19:29,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:19:29,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:19:29,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:19:29,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:19:29,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:19:25" (1/3) ... [2020-10-28 13:19:29,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729a6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:19:29, skipping insertion in model container [2020-10-28 13:19:29,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:19:26" (2/3) ... [2020-10-28 13:19:29,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@729a6cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:19:29, skipping insertion in model container [2020-10-28 13:19:29,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:19:29" (3/3) ... [2020-10-28 13:19:29,740 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label21.c [2020-10-28 13:19:29,752 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:19:29,758 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:19:29,771 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:19:29,802 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:19:29,803 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:19:29,803 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:19:29,803 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:19:29,803 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:19:29,803 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:19:29,803 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:19:29,804 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:19:29,831 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:19:29,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 13:19:29,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:29,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:29,840 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:29,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:29,847 INFO L82 PathProgramCache]: Analyzing trace with hash -805708276, now seen corresponding path program 1 times [2020-10-28 13:19:29,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:29,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970186119] [2020-10-28 13:19:29,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:30,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:30,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:30,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-28 13:19:30,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:30,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-28 13:19:30,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:30,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:30,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:19:30,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:19:30,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 13:19:30,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:19:30,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:30,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:30,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:30,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:30,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:30,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:19:30,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:30,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:30,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:30,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:30,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:19:30,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:30,918 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 13:19:30,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970186119] [2020-10-28 13:19:30,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:19:30,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:19:30,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836597872] [2020-10-28 13:19:30,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:19:30,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:30,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:19:30,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:19:30,949 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:19:35,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:35,754 INFO L93 Difference]: Finished difference Result 1189 states and 2183 transitions. [2020-10-28 13:19:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:19:35,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-28 13:19:35,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:35,779 INFO L225 Difference]: With dead ends: 1189 [2020-10-28 13:19:35,779 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:19:35,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:19:35,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:19:35,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 688. [2020-10-28 13:19:35,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2020-10-28 13:19:35,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1086 transitions. [2020-10-28 13:19:35,981 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1086 transitions. Word has length 45 [2020-10-28 13:19:35,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:35,981 INFO L481 AbstractCegarLoop]: Abstraction has 688 states and 1086 transitions. [2020-10-28 13:19:35,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:19:35,982 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1086 transitions. [2020-10-28 13:19:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 13:19:35,990 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:35,991 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:35,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:19:35,992 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:35,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:35,994 INFO L82 PathProgramCache]: Analyzing trace with hash 784150393, now seen corresponding path program 1 times [2020-10-28 13:19:35,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:35,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036670591] [2020-10-28 13:19:35,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:36,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:36,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:37,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:37,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:37,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 13:19:37,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:19:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1351 [2020-10-28 13:19:37,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:37,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:37,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:19:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:19:37,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:19:37,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:19:37,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:37,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:37,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:37,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:37,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:37,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:19:37,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:37,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:37,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:19:37,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 13:19:37,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:37,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:37,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:37,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:19:37,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:37,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 13:19:37,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:37,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:37,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:37,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:19:37,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:19:37,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036670591] [2020-10-28 13:19:37,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:19:37,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:19:37,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439018665] [2020-10-28 13:19:37,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:37,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:37,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:37,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:37,835 INFO L87 Difference]: Start difference. First operand 688 states and 1086 transitions. Second operand 7 states. [2020-10-28 13:19:43,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:43,071 INFO L93 Difference]: Finished difference Result 1736 states and 2821 transitions. [2020-10-28 13:19:43,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:19:43,071 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-28 13:19:43,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:43,079 INFO L225 Difference]: With dead ends: 1736 [2020-10-28 13:19:43,079 INFO L226 Difference]: Without dead ends: 1054 [2020-10-28 13:19:43,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:19:43,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2020-10-28 13:19:43,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 1030. [2020-10-28 13:19:43,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2020-10-28 13:19:43,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1386 transitions. [2020-10-28 13:19:43,173 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1386 transitions. Word has length 114 [2020-10-28 13:19:43,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:43,173 INFO L481 AbstractCegarLoop]: Abstraction has 1030 states and 1386 transitions. [2020-10-28 13:19:43,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:43,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1386 transitions. [2020-10-28 13:19:43,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-28 13:19:43,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:43,177 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:19:43,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:19:43,178 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:43,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:43,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1497407397, now seen corresponding path program 1 times [2020-10-28 13:19:43,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:43,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435627146] [2020-10-28 13:19:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:43,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:43,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:43,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 13:19:43,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:43,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-28 13:19:43,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:43,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:43,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:43,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:19:43,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 13:19:43,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:43,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:43,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:43,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:43,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:43,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:19:43,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:43,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:43,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:43,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:43,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:43,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:43,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:43,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:19:43,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:43,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 13:19:43,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:43,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:19:43,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:19:43,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [435627146] [2020-10-28 13:19:43,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:43,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:19:43,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047150860] [2020-10-28 13:19:43,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:19:43,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:43,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:19:43,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:19:43,816 INFO L87 Difference]: Start difference. First operand 1030 states and 1386 transitions. Second operand 5 states. [2020-10-28 13:19:48,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:48,105 INFO L93 Difference]: Finished difference Result 2075 states and 3039 transitions. [2020-10-28 13:19:48,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:19:48,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-10-28 13:19:48,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:48,118 INFO L225 Difference]: With dead ends: 2075 [2020-10-28 13:19:48,119 INFO L226 Difference]: Without dead ends: 1388 [2020-10-28 13:19:48,121 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:19:48,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1388 states. [2020-10-28 13:19:48,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1388 to 1374. [2020-10-28 13:19:48,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1374 states. [2020-10-28 13:19:48,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1805 transitions. [2020-10-28 13:19:48,181 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1805 transitions. Word has length 136 [2020-10-28 13:19:48,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:48,182 INFO L481 AbstractCegarLoop]: Abstraction has 1374 states and 1805 transitions. [2020-10-28 13:19:48,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:19:48,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1805 transitions. [2020-10-28 13:19:48,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-28 13:19:48,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:48,198 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:19:48,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:19:48,199 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:48,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:48,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1779179505, now seen corresponding path program 1 times [2020-10-28 13:19:48,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:48,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674706280] [2020-10-28 13:19:48,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:48,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:48,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:48,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:50,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:50,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-28 13:19:50,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:19:50,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1946 [2020-10-28 13:19:50,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:50,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:19:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:19:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 13:19:50,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:50,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:50,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:50,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:50,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:50,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:50,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:19:50,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:50,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:50,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:50,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:50,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:19:50,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:50,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:50,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:50,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:50,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:19:50,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:50,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-28 13:19:50,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:50,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:50,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:50,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:50,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:19:50,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:51,099 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:19:51,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674706280] [2020-10-28 13:19:51,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:19:51,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:19:51,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550912184] [2020-10-28 13:19:51,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:51,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:51,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:51,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:51,102 INFO L87 Difference]: Start difference. First operand 1374 states and 1805 transitions. Second operand 7 states. [2020-10-28 13:19:56,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:56,233 INFO L93 Difference]: Finished difference Result 2789 states and 3669 transitions. [2020-10-28 13:19:56,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:19:56,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2020-10-28 13:19:56,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:56,243 INFO L225 Difference]: With dead ends: 2789 [2020-10-28 13:19:56,244 INFO L226 Difference]: Without dead ends: 1758 [2020-10-28 13:19:56,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:19:56,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2020-10-28 13:19:56,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 1735. [2020-10-28 13:19:56,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1735 states. [2020-10-28 13:19:56,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2183 transitions. [2020-10-28 13:19:56,300 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2183 transitions. Word has length 174 [2020-10-28 13:19:56,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:56,301 INFO L481 AbstractCegarLoop]: Abstraction has 1735 states and 2183 transitions. [2020-10-28 13:19:56,301 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2183 transitions. [2020-10-28 13:19:56,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-28 13:19:56,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:56,305 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:19:56,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:19:56,306 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:56,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:56,306 INFO L82 PathProgramCache]: Analyzing trace with hash -2093911502, now seen corresponding path program 1 times [2020-10-28 13:19:56,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:56,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097207784] [2020-10-28 13:19:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:56,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:56,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:56,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:59,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:59,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:19:59,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:19:59,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2935 [2020-10-28 13:19:59,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:59,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:19:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 13:19:59,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:59,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:59,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:59,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:59,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:59,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:59,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:19:59,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:59,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:59,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:59,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:59,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:59,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:59,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:59,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:19:59,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:59,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 13:19:59,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:59,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:19:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:59,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:19:59,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:59,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:59,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:59,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 13:19:59,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:59,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-28 13:19:59,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:59,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 13:19:59,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:59,943 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 162 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:19:59,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097207784] [2020-10-28 13:19:59,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:59,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:19:59,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088886168] [2020-10-28 13:19:59,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:59,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:59,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:59,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:59,946 INFO L87 Difference]: Start difference. First operand 1735 states and 2183 transitions. Second operand 7 states. [2020-10-28 13:20:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:05,609 INFO L93 Difference]: Finished difference Result 3525 states and 4776 transitions. [2020-10-28 13:20:05,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:20:05,613 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2020-10-28 13:20:05,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:05,623 INFO L225 Difference]: With dead ends: 3525 [2020-10-28 13:20:05,624 INFO L226 Difference]: Without dead ends: 2094 [2020-10-28 13:20:05,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:20:05,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2020-10-28 13:20:05,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 2070. [2020-10-28 13:20:05,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2070 states. [2020-10-28 13:20:05,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2070 states to 2070 states and 2267 transitions. [2020-10-28 13:20:05,688 INFO L78 Accepts]: Start accepts. Automaton has 2070 states and 2267 transitions. Word has length 234 [2020-10-28 13:20:05,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:05,689 INFO L481 AbstractCegarLoop]: Abstraction has 2070 states and 2267 transitions. [2020-10-28 13:20:05,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:05,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2070 states and 2267 transitions. [2020-10-28 13:20:05,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-10-28 13:20:05,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:05,698 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:20:05,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:20:05,698 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:05,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:05,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1237472592, now seen corresponding path program 1 times [2020-10-28 13:20:05,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:05,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227966261] [2020-10-28 13:20:05,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:05,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:05,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:08,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:08,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-28 13:20:08,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:20:08,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2814 [2020-10-28 13:20:08,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:08,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:08,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:20:08,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:20:08,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:08,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:08,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:08,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:08,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:08,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:08,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:20:08,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:08,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:08,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:08,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:08,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:08,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:20:08,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:09,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:09,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:09,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:09,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-28 13:20:09,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:09,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:09,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:09,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:20:09,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:09,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:09,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:09,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:20:09,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-28 13:20:09,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:09,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:09,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:09,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:20:09,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:20:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:20:10,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227966261] [2020-10-28 13:20:10,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:10,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:10,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626583185] [2020-10-28 13:20:10,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:10,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:10,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:10,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:10,071 INFO L87 Difference]: Start difference. First operand 2070 states and 2267 transitions. Second operand 7 states. [2020-10-28 13:20:14,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:14,457 INFO L93 Difference]: Finished difference Result 4885 states and 5551 transitions. [2020-10-28 13:20:14,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:20:14,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 413 [2020-10-28 13:20:14,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:14,476 INFO L225 Difference]: With dead ends: 4885 [2020-10-28 13:20:14,476 INFO L226 Difference]: Without dead ends: 3158 [2020-10-28 13:20:14,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:20:14,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2020-10-28 13:20:14,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 2770. [2020-10-28 13:20:14,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2770 states. [2020-10-28 13:20:14,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 2990 transitions. [2020-10-28 13:20:14,568 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 2990 transitions. Word has length 413 [2020-10-28 13:20:14,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:14,569 INFO L481 AbstractCegarLoop]: Abstraction has 2770 states and 2990 transitions. [2020-10-28 13:20:14,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:14,569 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 2990 transitions. [2020-10-28 13:20:14,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-28 13:20:14,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:14,577 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:20:14,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:20:14,578 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:14,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:14,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1307494592, now seen corresponding path program 1 times [2020-10-28 13:20:14,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:14,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440853555] [2020-10-28 13:20:14,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:14,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:14,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:15,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:19,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:19,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 435 [2020-10-28 13:20:19,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:20:19,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 13:20:19,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:19,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:20:19,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:20:19,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:19,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:19,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:19,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:19,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:19,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:19,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:20:19,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:19,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:19,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:19,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:19,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:19,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:19,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:20,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:20,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:20:20,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:20,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 13:20:20,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:20,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:20,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:20,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:20,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:20:20,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:20,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:20:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:20,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:20,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:20,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:20:20,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:20,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-28 13:20:20,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:20,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:20:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:20:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:20:20,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440853555] [2020-10-28 13:20:20,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:20,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:20,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768437941] [2020-10-28 13:20:21,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:21,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:21,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:21,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:21,002 INFO L87 Difference]: Start difference. First operand 2770 states and 2990 transitions. Second operand 7 states. [2020-10-28 13:20:26,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:26,373 INFO L93 Difference]: Finished difference Result 5907 states and 6382 transitions. [2020-10-28 13:20:26,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:20:26,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 421 [2020-10-28 13:20:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:26,396 INFO L225 Difference]: With dead ends: 5907 [2020-10-28 13:20:26,396 INFO L226 Difference]: Without dead ends: 3482 [2020-10-28 13:20:26,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:20:26,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2020-10-28 13:20:26,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3446. [2020-10-28 13:20:26,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3446 states. [2020-10-28 13:20:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3446 states to 3446 states and 3683 transitions. [2020-10-28 13:20:26,510 INFO L78 Accepts]: Start accepts. Automaton has 3446 states and 3683 transitions. Word has length 421 [2020-10-28 13:20:26,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:26,511 INFO L481 AbstractCegarLoop]: Abstraction has 3446 states and 3683 transitions. [2020-10-28 13:20:26,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand 3446 states and 3683 transitions. [2020-10-28 13:20:26,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2020-10-28 13:20:26,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:26,523 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:20:26,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:20:26,524 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:26,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:26,525 INFO L82 PathProgramCache]: Analyzing trace with hash 2106180548, now seen corresponding path program 1 times [2020-10-28 13:20:26,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:26,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197266027] [2020-10-28 13:20:26,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:26,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:26,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:27,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:30,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:30,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 469 [2020-10-28 13:20:30,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:20:30,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4010 [2020-10-28 13:20:30,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:30,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:30,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:30,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:20:30,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:20:30,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:30,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:30,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:30,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:30,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:30,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:30,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:20:30,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:30,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:30,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:30,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:30,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:30,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:30,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:30,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:31,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:31,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:20:31,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:31,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-28 13:20:31,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:31,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:31,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:31,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:20:31,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:31,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:20:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:31,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:31,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:31,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:20:31,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:31,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-28 13:20:31,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:31,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:31,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:31,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:31,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:20:31,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:20:31,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197266027] [2020-10-28 13:20:31,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:31,739 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:31,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748231584] [2020-10-28 13:20:31,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:31,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:31,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:31,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:31,741 INFO L87 Difference]: Start difference. First operand 3446 states and 3683 transitions. Second operand 7 states. [2020-10-28 13:20:35,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:35,448 INFO L93 Difference]: Finished difference Result 7291 states and 8003 transitions. [2020-10-28 13:20:35,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:20:35,450 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 455 [2020-10-28 13:20:35,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:35,471 INFO L225 Difference]: With dead ends: 7291 [2020-10-28 13:20:35,472 INFO L226 Difference]: Without dead ends: 4527 [2020-10-28 13:20:35,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:20:35,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4527 states. [2020-10-28 13:20:35,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4527 to 4505. [2020-10-28 13:20:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4505 states. [2020-10-28 13:20:35,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4505 states to 4505 states and 4833 transitions. [2020-10-28 13:20:35,626 INFO L78 Accepts]: Start accepts. Automaton has 4505 states and 4833 transitions. Word has length 455 [2020-10-28 13:20:35,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:35,627 INFO L481 AbstractCegarLoop]: Abstraction has 4505 states and 4833 transitions. [2020-10-28 13:20:35,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 4505 states and 4833 transitions. [2020-10-28 13:20:35,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 522 [2020-10-28 13:20:35,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:35,641 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:20:35,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:20:35,641 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:35,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:35,642 INFO L82 PathProgramCache]: Analyzing trace with hash -401250673, now seen corresponding path program 1 times [2020-10-28 13:20:35,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:35,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337437730] [2020-10-28 13:20:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:35,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:36,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:37,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:37,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 537 [2020-10-28 13:20:37,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:20:37,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1366 [2020-10-28 13:20:37,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:37,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:37,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:37,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-28 13:20:37,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:20:37,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:37,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:37,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:37,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:37,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:37,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:37,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:20:37,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:37,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:37,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:37,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:37,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:37,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:37,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:37,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:37,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:37,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:20:37,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:37,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:20:37,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:37,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:37,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:37,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:37,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:20:37,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:37,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:37,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:37,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:20:37,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:37,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:20:37,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:37,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:20:37,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:37,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:20:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:37,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:37,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:37,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:20:37,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:37,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 13:20:37,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:37,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:37,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:37,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:37,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:20:37,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:38,277 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 339 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-28 13:20:38,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337437730] [2020-10-28 13:20:38,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:38,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:38,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25725272] [2020-10-28 13:20:38,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:38,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:38,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:38,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:38,280 INFO L87 Difference]: Start difference. First operand 4505 states and 4833 transitions. Second operand 7 states. [2020-10-28 13:20:42,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:42,657 INFO L93 Difference]: Finished difference Result 11071 states and 12108 transitions. [2020-10-28 13:20:42,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:20:42,658 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 521 [2020-10-28 13:20:42,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:42,689 INFO L225 Difference]: With dead ends: 11071 [2020-10-28 13:20:42,689 INFO L226 Difference]: Without dead ends: 7248 [2020-10-28 13:20:42,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:20:42,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7248 states. [2020-10-28 13:20:42,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7248 to 6562. [2020-10-28 13:20:42,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6562 states. [2020-10-28 13:20:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6562 states to 6562 states and 7122 transitions. [2020-10-28 13:20:42,868 INFO L78 Accepts]: Start accepts. Automaton has 6562 states and 7122 transitions. Word has length 521 [2020-10-28 13:20:42,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:42,869 INFO L481 AbstractCegarLoop]: Abstraction has 6562 states and 7122 transitions. [2020-10-28 13:20:42,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:42,870 INFO L276 IsEmpty]: Start isEmpty. Operand 6562 states and 7122 transitions. [2020-10-28 13:20:42,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 542 [2020-10-28 13:20:42,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:42,877 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:20:42,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:20:42,878 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:42,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:42,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1849468720, now seen corresponding path program 1 times [2020-10-28 13:20:42,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:42,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13024007] [2020-10-28 13:20:42,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:43,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:43,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:43,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:47,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:47,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 555 [2020-10-28 13:20:47,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:20:47,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4925 [2020-10-28 13:20:47,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:47,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:47,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:47,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:20:47,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:20:47,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:48,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:48,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:48,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:48,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:48,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:48,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:20:48,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:48,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:48,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:48,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:48,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:48,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:48,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:48,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:20:48,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:48,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 13:20:48,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:48,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:48,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:48,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:48,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:20:48,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:48,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:20:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:48,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:48,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:20:48,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:48,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-28 13:20:48,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:48,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:48,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:48,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:48,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:20:48,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:49,428 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 318 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:20:49,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13024007] [2020-10-28 13:20:49,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:49,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:49,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191510920] [2020-10-28 13:20:49,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:49,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:49,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:49,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:49,431 INFO L87 Difference]: Start difference. First operand 6562 states and 7122 transitions. Second operand 7 states. [2020-10-28 13:20:53,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:53,853 INFO L93 Difference]: Finished difference Result 12464 states and 13596 transitions. [2020-10-28 13:20:53,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:20:53,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 541 [2020-10-28 13:20:53,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:53,880 INFO L225 Difference]: With dead ends: 12464 [2020-10-28 13:20:53,880 INFO L226 Difference]: Without dead ends: 6584 [2020-10-28 13:20:53,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:20:53,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6584 states. [2020-10-28 13:20:54,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6584 to 6564. [2020-10-28 13:20:54,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6564 states. [2020-10-28 13:20:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6564 states to 6564 states and 7125 transitions. [2020-10-28 13:20:54,037 INFO L78 Accepts]: Start accepts. Automaton has 6564 states and 7125 transitions. Word has length 541 [2020-10-28 13:20:54,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:54,038 INFO L481 AbstractCegarLoop]: Abstraction has 6564 states and 7125 transitions. [2020-10-28 13:20:54,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:54,038 INFO L276 IsEmpty]: Start isEmpty. Operand 6564 states and 7125 transitions. [2020-10-28 13:20:54,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 613 [2020-10-28 13:20:54,045 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:54,046 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:20:54,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:20:54,046 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:54,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:54,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1784714295, now seen corresponding path program 1 times [2020-10-28 13:20:54,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:54,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [923757034] [2020-10-28 13:20:54,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:54,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:54,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:54,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:55,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:55,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 628 [2020-10-28 13:20:55,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:20:55,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1592 [2020-10-28 13:20:55,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:55,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-28 13:20:55,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:20:55,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:55,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:55,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:55,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:55,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:55,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:55,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:20:55,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:55,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:55,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:55,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:55,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:55,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:55,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:55,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:56,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:56,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:20:56,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:56,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:20:56,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:56,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:56,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:56,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:56,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:56,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:56,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:20:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:56,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:56,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:56,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:20:56,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:56,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 13:20:56,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:56,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:56,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:56,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:56,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 13:20:56,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:56,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:20:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:56,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:56,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:56,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:20:56,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:56,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 13:20:56,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:56,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:20:56,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 430 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-28 13:20:56,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [923757034] [2020-10-28 13:20:56,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:56,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:56,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060272021] [2020-10-28 13:20:56,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:56,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:56,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:56,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:56,704 INFO L87 Difference]: Start difference. First operand 6564 states and 7125 transitions. Second operand 7 states. [2020-10-28 13:21:00,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:00,474 INFO L93 Difference]: Finished difference Result 13820 states and 15244 transitions. [2020-10-28 13:21:00,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:21:00,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 612 [2020-10-28 13:21:00,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:00,502 INFO L225 Difference]: With dead ends: 13820 [2020-10-28 13:21:00,503 INFO L226 Difference]: Without dead ends: 7938 [2020-10-28 13:21:00,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:21:00,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2020-10-28 13:21:00,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 7928. [2020-10-28 13:21:00,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7928 states. [2020-10-28 13:21:00,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7928 states to 7928 states and 8722 transitions. [2020-10-28 13:21:00,683 INFO L78 Accepts]: Start accepts. Automaton has 7928 states and 8722 transitions. Word has length 612 [2020-10-28 13:21:00,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:00,684 INFO L481 AbstractCegarLoop]: Abstraction has 7928 states and 8722 transitions. [2020-10-28 13:21:00,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:00,684 INFO L276 IsEmpty]: Start isEmpty. Operand 7928 states and 8722 transitions. [2020-10-28 13:21:00,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 642 [2020-10-28 13:21:00,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:00,694 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:21:00,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:21:00,695 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:00,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:00,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1107076479, now seen corresponding path program 1 times [2020-10-28 13:21:00,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:00,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233209722] [2020-10-28 13:21:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:00,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:01,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:03,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:03,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 657 [2020-10-28 13:21:03,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:21:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2711 [2020-10-28 13:21:03,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:03,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-28 13:21:03,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:21:03,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:03,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:03,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:03,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:03,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:03,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:03,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:21:03,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:03,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:03,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:03,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:03,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:03,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:03,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:03,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:03,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:21:03,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:03,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 13:21:03,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:03,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:03,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:03,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:21:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:03,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:03,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:03,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:21:03,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:03,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-28 13:21:03,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:03,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:03,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:03,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:03,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:21:03,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:03,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:21:03,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:04,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:04,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:04,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:21:04,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-28 13:21:04,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:04,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:21:04,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:04,739 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 457 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-28 13:21:04,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233209722] [2020-10-28 13:21:04,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:04,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:04,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016409324] [2020-10-28 13:21:04,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:04,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:04,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:04,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:04,742 INFO L87 Difference]: Start difference. First operand 7928 states and 8722 transitions. Second operand 7 states. [2020-10-28 13:21:08,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:08,937 INFO L93 Difference]: Finished difference Result 17913 states and 19925 transitions. [2020-10-28 13:21:08,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:21:08,938 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 641 [2020-10-28 13:21:08,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:08,970 INFO L225 Difference]: With dead ends: 17913 [2020-10-28 13:21:08,970 INFO L226 Difference]: Without dead ends: 10667 [2020-10-28 13:21:08,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:21:08,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10667 states. [2020-10-28 13:21:09,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10667 to 10330. [2020-10-28 13:21:09,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10330 states. [2020-10-28 13:21:09,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10330 states to 10330 states and 11373 transitions. [2020-10-28 13:21:09,198 INFO L78 Accepts]: Start accepts. Automaton has 10330 states and 11373 transitions. Word has length 641 [2020-10-28 13:21:09,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:09,199 INFO L481 AbstractCegarLoop]: Abstraction has 10330 states and 11373 transitions. [2020-10-28 13:21:09,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:09,199 INFO L276 IsEmpty]: Start isEmpty. Operand 10330 states and 11373 transitions. [2020-10-28 13:21:09,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 669 [2020-10-28 13:21:09,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:09,211 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:21:09,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:21:09,211 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:09,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:09,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1362952135, now seen corresponding path program 1 times [2020-10-28 13:21:09,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:09,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100644773] [2020-10-28 13:21:09,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:09,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:10,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:10,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 684 [2020-10-28 13:21:10,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:10,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 993 [2020-10-28 13:21:10,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:10,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-28 13:21:10,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 13:21:10,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:10,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:10,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:10,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:10,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:10,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:10,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:21:10,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:10,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:10,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:10,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:10,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:10,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:10,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:10,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:10,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:10,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:21:10,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:10,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:21:10,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:10,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:10,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:10,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:10,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:21:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:10,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:10,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:10,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:21:10,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:10,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:21:10,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:10,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:10,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:10,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:10,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:21:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:10,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:11,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:11,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:21:11,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:11,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:21:11,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:11,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:11,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:11,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:11,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-28 13:21:11,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 114 proven. 3 refuted. 0 times theorem prover too weak. 527 trivial. 0 not checked. [2020-10-28 13:21:11,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100644773] [2020-10-28 13:21:11,419 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:11,419 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:21:11,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013973369] [2020-10-28 13:21:11,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:21:11,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:11,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:21:11,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:21:11,421 INFO L87 Difference]: Start difference. First operand 10330 states and 11373 transitions. Second operand 6 states. [2020-10-28 13:21:16,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:16,606 INFO L93 Difference]: Finished difference Result 23691 states and 26393 transitions. [2020-10-28 13:21:16,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:21:16,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 668 [2020-10-28 13:21:16,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:16,651 INFO L225 Difference]: With dead ends: 23691 [2020-10-28 13:21:16,651 INFO L226 Difference]: Without dead ends: 14043 [2020-10-28 13:21:16,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:21:16,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14043 states. [2020-10-28 13:21:16,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14043 to 14043. [2020-10-28 13:21:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14043 states. [2020-10-28 13:21:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14043 states to 14043 states and 15564 transitions. [2020-10-28 13:21:16,927 INFO L78 Accepts]: Start accepts. Automaton has 14043 states and 15564 transitions. Word has length 668 [2020-10-28 13:21:16,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:16,928 INFO L481 AbstractCegarLoop]: Abstraction has 14043 states and 15564 transitions. [2020-10-28 13:21:16,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:21:16,928 INFO L276 IsEmpty]: Start isEmpty. Operand 14043 states and 15564 transitions. [2020-10-28 13:21:16,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1207 [2020-10-28 13:21:16,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:16,960 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 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 13:21:16,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:21:16,960 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:16,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:16,961 INFO L82 PathProgramCache]: Analyzing trace with hash -266317877, now seen corresponding path program 1 times [2020-10-28 13:21:16,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:16,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925576540] [2020-10-28 13:21:16,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:17,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:17,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:18,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:21,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:21,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1230 [2020-10-28 13:21:22,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:21:22,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-28 13:21:22,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 794 [2020-10-28 13:21:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:21:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:22,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:21:22,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:22,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:21:22,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:21:22,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:21:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:21:22,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:21:22,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:22,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:21:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:21:22,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 13:21:22,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:22,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:22,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:21:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:22,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:21:22,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:22,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:21:22,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:22,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:22,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:22,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:22,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:21:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:23,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:23,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:23,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:21:23,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:23,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:21:23,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:23,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:23,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:23,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:23,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:21:23,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:23,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:21:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:23,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:23,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:23,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:21:23,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:23,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-28 13:21:23,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:23,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:23,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:21:23,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:23,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1057 [2020-10-28 13:21:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:23,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:23,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:23,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:21:23,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:23,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:21:23,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:23,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:23,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:23,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:21:23,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:23,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:24,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2771 backedges. 1060 proven. 111 refuted. 0 times theorem prover too weak. 1600 trivial. 0 not checked. [2020-10-28 13:21:24,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925576540] [2020-10-28 13:21:24,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:24,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:24,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365282860] [2020-10-28 13:21:24,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:24,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:24,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:24,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:24,679 INFO L87 Difference]: Start difference. First operand 14043 states and 15564 transitions. Second operand 7 states. [2020-10-28 13:21:30,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:30,772 INFO L93 Difference]: Finished difference Result 29430 states and 32794 transitions. [2020-10-28 13:21:30,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:21:30,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1206 [2020-10-28 13:21:30,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:30,831 INFO L225 Difference]: With dead ends: 29430 [2020-10-28 13:21:30,831 INFO L226 Difference]: Without dead ends: 16069 [2020-10-28 13:21:30,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:21:30,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16069 states. [2020-10-28 13:21:31,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16069 to 15732. [2020-10-28 13:21:31,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15732 states. [2020-10-28 13:21:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15732 states to 15732 states and 17263 transitions. [2020-10-28 13:21:31,398 INFO L78 Accepts]: Start accepts. Automaton has 15732 states and 17263 transitions. Word has length 1206 [2020-10-28 13:21:31,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:31,400 INFO L481 AbstractCegarLoop]: Abstraction has 15732 states and 17263 transitions. [2020-10-28 13:21:31,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:31,400 INFO L276 IsEmpty]: Start isEmpty. Operand 15732 states and 17263 transitions. [2020-10-28 13:21:31,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1217 [2020-10-28 13:21:31,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:31,446 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 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 13:21:31,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:21:31,446 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:31,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:31,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1370727466, now seen corresponding path program 1 times [2020-10-28 13:21:31,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:31,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829515735] [2020-10-28 13:21:31,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:31,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:32,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:32,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:35,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:36,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:36,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1238 [2020-10-28 13:21:36,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:21:36,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5074 [2020-10-28 13:21:36,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:36,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 802 [2020-10-28 13:21:36,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:21:36,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:37,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:37,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:37,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:37,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:37,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:21:37,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:37,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:37,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:37,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:37,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:37,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:37,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:21:37,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:37,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 13:21:37,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:37,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:37,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:37,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:37,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:37,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:21:37,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:37,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:37,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:37,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:21:37,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:37,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:21:37,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:37,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:37,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:37,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:37,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:37,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:21:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:37,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:37,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:37,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:21:37,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:21:37,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:37,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:37,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:37,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:37,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:21:37,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:37,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:37,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:37,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:21:37,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:37,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 13:21:37,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:37,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:21:37,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:37,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:21:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:37,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:37,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:37,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:21:37,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:37,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-28 13:21:37,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:37,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:37,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:21:37,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:38,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-28 13:21:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:38,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:38,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:38,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:21:38,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:38,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:21:38,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:38,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:21:38,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:38,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:39,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2568 backedges. 1027 proven. 111 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2020-10-28 13:21:39,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829515735] [2020-10-28 13:21:39,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:39,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:39,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349099] [2020-10-28 13:21:39,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:39,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:39,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:39,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:39,478 INFO L87 Difference]: Start difference. First operand 15732 states and 17263 transitions. Second operand 7 states. [2020-10-28 13:21:43,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:43,988 INFO L93 Difference]: Finished difference Result 30786 states and 33845 transitions. [2020-10-28 13:21:43,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:21:43,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1216 [2020-10-28 13:21:43,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:44,037 INFO L225 Difference]: With dead ends: 30786 [2020-10-28 13:21:44,037 INFO L226 Difference]: Without dead ends: 15736 [2020-10-28 13:21:44,060 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:21:44,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15736 states. [2020-10-28 13:21:44,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15736 to 15732. [2020-10-28 13:21:44,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15732 states. [2020-10-28 13:21:44,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15732 states to 15732 states and 17259 transitions. [2020-10-28 13:21:44,353 INFO L78 Accepts]: Start accepts. Automaton has 15732 states and 17259 transitions. Word has length 1216 [2020-10-28 13:21:44,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:44,354 INFO L481 AbstractCegarLoop]: Abstraction has 15732 states and 17259 transitions. [2020-10-28 13:21:44,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:44,354 INFO L276 IsEmpty]: Start isEmpty. Operand 15732 states and 17259 transitions. [2020-10-28 13:21:44,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1236 [2020-10-28 13:21:44,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:44,391 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 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 13:21:44,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:21:44,391 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:44,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:44,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1320612663, now seen corresponding path program 1 times [2020-10-28 13:21:44,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:44,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031782062] [2020-10-28 13:21:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:44,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:45,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:45,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:49,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:49,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1259 [2020-10-28 13:21:49,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:21:49,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-28 13:21:49,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:49,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:49,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:49,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 823 [2020-10-28 13:21:49,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:21:49,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:49,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:49,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:49,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:49,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:49,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:49,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:21:49,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:49,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:49,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:49,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:49,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:49,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:49,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:49,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:49,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:50,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:50,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:21:50,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:50,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:21:50,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:50,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:50,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:50,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:50,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:50,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:50,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:21:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:50,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:50,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:50,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:21:50,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:21:50,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:50,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:50,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:50,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:50,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:21:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:50,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:50,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:50,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:21:50,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:50,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:21:50,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:50,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:50,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:50,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:50,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:50,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:50,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:21:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:50,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:50,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:50,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:21:50,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:50,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:21:50,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:50,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:50,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:50,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:50,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:50,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:50,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:21:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:50,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:50,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:50,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:21:50,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:21:50,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:50,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:50,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:50,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:50,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 13:21:50,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:50,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 813 [2020-10-28 13:21:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:50,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:50,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:50,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:21:50,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:50,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-28 13:21:50,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:50,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:50,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:21:50,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:51,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1086 [2020-10-28 13:21:51,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:51,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:51,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:51,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:21:51,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:51,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:21:51,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:51,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:21:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:52,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2872 backedges. 1089 proven. 111 refuted. 0 times theorem prover too weak. 1672 trivial. 0 not checked. [2020-10-28 13:21:52,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031782062] [2020-10-28 13:21:52,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:52,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:21:52,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338702660] [2020-10-28 13:21:52,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:21:52,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:52,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:21:52,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:21:52,490 INFO L87 Difference]: Start difference. First operand 15732 states and 17259 transitions. Second operand 8 states. [2020-10-28 13:21:57,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:57,173 INFO L93 Difference]: Finished difference Result 31462 states and 34561 transitions. [2020-10-28 13:21:57,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:21:57,175 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1235 [2020-10-28 13:21:57,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:57,216 INFO L225 Difference]: With dead ends: 31462 [2020-10-28 13:21:57,216 INFO L226 Difference]: Without dead ends: 16412 [2020-10-28 13:21:57,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:21:57,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16412 states. [2020-10-28 13:21:57,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16412 to 16412. [2020-10-28 13:21:57,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16412 states. [2020-10-28 13:21:57,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16412 states to 16412 states and 17961 transitions. [2020-10-28 13:21:57,795 INFO L78 Accepts]: Start accepts. Automaton has 16412 states and 17961 transitions. Word has length 1235 [2020-10-28 13:21:57,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:57,797 INFO L481 AbstractCegarLoop]: Abstraction has 16412 states and 17961 transitions. [2020-10-28 13:21:57,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:21:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 16412 states and 17961 transitions. [2020-10-28 13:21:57,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1354 [2020-10-28 13:21:57,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:57,837 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2020-10-28 13:21:57,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:21:57,837 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:57,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:57,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1243967435, now seen corresponding path program 1 times [2020-10-28 13:21:57,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:57,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871653819] [2020-10-28 13:21:57,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:58,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:58,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:58,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:59,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:03,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:03,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1377 [2020-10-28 13:22:03,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:22:03,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 13:22:03,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:03,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 941 [2020-10-28 13:22:03,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:22:03,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:03,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:03,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:03,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:03,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:03,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:03,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:22:03,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:03,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:03,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:03,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:03,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:03,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:03,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:03,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:22:03,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:03,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:22:03,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:03,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:03,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:03,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:03,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:22:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:03,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:03,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:03,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:22:03,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:03,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-28 13:22:03,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:03,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:03,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:03,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:03,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:22:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:03,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:03,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:03,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:22:03,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:03,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:22:03,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:03,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:03,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:03,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:03,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:22:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:03,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:03,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:03,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:22:03,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:03,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:22:03,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:03,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:03,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:03,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:03,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:22:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:03,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:03,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:03,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:22:03,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:03,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 13:22:03,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:03,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:03,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-28 13:22:03,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:03,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 931 [2020-10-28 13:22:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:04,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:04,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:04,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:22:04,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:04,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-28 13:22:04,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:04,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:04,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:22:04,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:04,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1204 [2020-10-28 13:22:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:04,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:04,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:04,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:22:04,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:04,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:22:04,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:04,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:22:04,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:04,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 3164 backedges. 1207 proven. 111 refuted. 0 times theorem prover too weak. 1846 trivial. 0 not checked. [2020-10-28 13:22:06,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871653819] [2020-10-28 13:22:06,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:06,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:22:06,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406405106] [2020-10-28 13:22:06,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:22:06,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:06,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:22:06,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:22:06,075 INFO L87 Difference]: Start difference. First operand 16412 states and 17961 transitions. Second operand 8 states. [2020-10-28 13:22:12,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:12,698 INFO L93 Difference]: Finished difference Result 32485 states and 35622 transitions. [2020-10-28 13:22:12,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:22:12,700 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1353 [2020-10-28 13:22:12,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:12,742 INFO L225 Difference]: With dead ends: 32485 [2020-10-28 13:22:12,742 INFO L226 Difference]: Without dead ends: 16755 [2020-10-28 13:22:12,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:22:12,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16755 states. [2020-10-28 13:22:13,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16755 to 16751. [2020-10-28 13:22:13,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16751 states. [2020-10-28 13:22:13,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16751 states to 16751 states and 18322 transitions. [2020-10-28 13:22:13,067 INFO L78 Accepts]: Start accepts. Automaton has 16751 states and 18322 transitions. Word has length 1353 [2020-10-28 13:22:13,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:13,069 INFO L481 AbstractCegarLoop]: Abstraction has 16751 states and 18322 transitions. [2020-10-28 13:22:13,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:22:13,069 INFO L276 IsEmpty]: Start isEmpty. Operand 16751 states and 18322 transitions. [2020-10-28 13:22:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1550 [2020-10-28 13:22:13,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:13,116 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:13,116 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:22:13,116 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:13,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:13,117 INFO L82 PathProgramCache]: Analyzing trace with hash -2020800232, now seen corresponding path program 1 times [2020-10-28 13:22:13,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:13,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739586011] [2020-10-28 13:22:13,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:13,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:13,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:14,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:14,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:18,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:18,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1575 [2020-10-28 13:22:18,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:22:18,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-28 13:22:18,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:18,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1139 [2020-10-28 13:22:18,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:22:18,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:18,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:18,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:18,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:18,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:18,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:18,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:18,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:22:18,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:18,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:18,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:18,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:18,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:18,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:19,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:22:19,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:19,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:22:19,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:19,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:19,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:19,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:19,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:19,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:19,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:22:19,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:19,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:19,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:22:19,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:19,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:22:19,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:19,275 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:19,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:19,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:19,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:19,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:19,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:22:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:19,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:19,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:22:19,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:19,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:22:19,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:19,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:19,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:19,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:19,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:19,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:19,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:22:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:19,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:19,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:22:19,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:19,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:22:19,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:19,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:19,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:19,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:19,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:22:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:19,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:19,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:22:19,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:19,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 13:22:19,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:19,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:19,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:19,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:19,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 877 [2020-10-28 13:22:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:19,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:19,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:19,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:22:19,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:19,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 13:22:19,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:19,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:19,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-28 13:22:19,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:20,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1127 [2020-10-28 13:22:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:20,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:20,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:20,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:22:20,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:20,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-10-28 13:22:20,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:20,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:22:20,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:22:20,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1400 [2020-10-28 13:22:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:20,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:20,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:20,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:22:20,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:20,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 13:22:20,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:20,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:22:20,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:20,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 4371 backedges. 1446 proven. 111 refuted. 0 times theorem prover too weak. 2814 trivial. 0 not checked. [2020-10-28 13:22:22,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739586011] [2020-10-28 13:22:22,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:22,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:22,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896045362] [2020-10-28 13:22:22,040 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:22,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:22,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:22,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:22,041 INFO L87 Difference]: Start difference. First operand 16751 states and 18322 transitions. Second operand 7 states. [2020-10-28 13:22:27,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:27,142 INFO L93 Difference]: Finished difference Result 35862 states and 39445 transitions. [2020-10-28 13:22:27,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:22:27,143 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1549 [2020-10-28 13:22:27,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:27,191 INFO L225 Difference]: With dead ends: 35862 [2020-10-28 13:22:27,191 INFO L226 Difference]: Without dead ends: 19793 [2020-10-28 13:22:27,216 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:22:27,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19793 states. [2020-10-28 13:22:27,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19793 to 19790. [2020-10-28 13:22:27,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19790 states. [2020-10-28 13:22:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19790 states to 19790 states and 21480 transitions. [2020-10-28 13:22:27,553 INFO L78 Accepts]: Start accepts. Automaton has 19790 states and 21480 transitions. Word has length 1549 [2020-10-28 13:22:27,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:27,554 INFO L481 AbstractCegarLoop]: Abstraction has 19790 states and 21480 transitions. [2020-10-28 13:22:27,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 19790 states and 21480 transitions. [2020-10-28 13:22:27,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1570 [2020-10-28 13:22:27,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:27,601 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:27,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 13:22:27,601 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:27,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:27,603 INFO L82 PathProgramCache]: Analyzing trace with hash -139320183, now seen corresponding path program 1 times [2020-10-28 13:22:27,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:27,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335302189] [2020-10-28 13:22:27,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:28,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:28,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:28,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:33,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:33,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1597 [2020-10-28 13:22:33,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:22:33,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5098 [2020-10-28 13:22:33,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:33,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 677 [2020-10-28 13:22:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-28 13:22:33,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:33,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:33,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:33,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:33,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:33,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:33,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:22:33,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:33,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:33,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:33,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:33,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:33,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:33,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:33,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:33,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:22:33,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:33,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:22:33,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:33,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:33,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:33,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:33,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:33,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:33,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:22:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:33,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:33,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:33,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:22:33,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:33,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:22:33,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:33,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:33,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:33,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:22:33,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:33,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:33,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:33,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:22:33,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:33,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 13:22:33,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:33,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:33,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:33,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:33,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:22:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:33,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:33,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:33,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:22:33,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:33,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:22:33,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:33,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:33,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-28 13:22:33,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:33,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:22:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:33,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:33,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:22:33,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:33,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 13:22:33,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:33,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:33,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-28 13:22:33,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:34,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 931 [2020-10-28 13:22:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:34,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:34,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:34,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:22:34,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:34,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:22:34,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:34,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:34,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:22:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:34,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1073 [2020-10-28 13:22:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:34,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:34,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:34,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:22:34,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:34,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:22:34,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:34,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 13:22:34,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:34,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:34,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1147 [2020-10-28 13:22:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:34,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:34,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:34,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:22:34,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:34,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:22:34,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:34,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:22:34,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:34,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:34,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1420 [2020-10-28 13:22:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:34,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:34,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:34,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:22:34,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:34,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:22:34,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:34,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:22:34,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:34,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:36,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4705 backedges. 1061 proven. 580 refuted. 0 times theorem prover too weak. 3064 trivial. 0 not checked. [2020-10-28 13:22:36,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335302189] [2020-10-28 13:22:36,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:36,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:36,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57754222] [2020-10-28 13:22:36,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:36,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:36,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:36,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:36,884 INFO L87 Difference]: Start difference. First operand 19790 states and 21480 transitions. Second operand 7 states. [2020-10-28 13:22:41,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:41,719 INFO L93 Difference]: Finished difference Result 39578 states and 43076 transitions. [2020-10-28 13:22:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:22:41,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1569 [2020-10-28 13:22:41,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:41,765 INFO L225 Difference]: With dead ends: 39578 [2020-10-28 13:22:41,765 INFO L226 Difference]: Without dead ends: 20470 [2020-10-28 13:22:41,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:22:41,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20470 states. [2020-10-28 13:22:42,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20470 to 20129. [2020-10-28 13:22:42,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20129 states. [2020-10-28 13:22:42,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20129 states to 20129 states and 21811 transitions. [2020-10-28 13:22:42,108 INFO L78 Accepts]: Start accepts. Automaton has 20129 states and 21811 transitions. Word has length 1569 [2020-10-28 13:22:42,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:42,109 INFO L481 AbstractCegarLoop]: Abstraction has 20129 states and 21811 transitions. [2020-10-28 13:22:42,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:42,109 INFO L276 IsEmpty]: Start isEmpty. Operand 20129 states and 21811 transitions. [2020-10-28 13:22:42,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1603 [2020-10-28 13:22:42,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:42,148 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-10-28 13:22:42,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 13:22:42,148 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:42,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:42,149 INFO L82 PathProgramCache]: Analyzing trace with hash 27561631, now seen corresponding path program 1 times [2020-10-28 13:22:42,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:42,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266731087] [2020-10-28 13:22:42,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:42,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:42,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:42,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:42,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:43,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:45,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:47,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:47,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1630 [2020-10-28 13:22:47,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:22:47,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 13:22:47,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:47,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 710 [2020-10-28 13:22:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-28 13:22:47,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:47,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:22:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:47,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:47,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:47,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:22:47,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:47,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:22:47,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:47,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:47,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:47,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:47,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:47,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:22:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:47,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:47,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:47,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:22:47,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:47,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:22:47,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:47,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:47,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:47,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:47,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:22:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:47,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:47,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:47,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:22:47,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:47,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:22:47,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:47,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:47,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:47,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:48,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:22:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:48,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:48,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:48,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:22:48,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:48,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:22:48,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:48,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:48,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:48,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:48,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:48,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-28 13:22:48,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:48,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:48,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:48,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:22:48,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:48,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:22:48,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:48,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:22:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:22:48,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-28 13:22:48,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:48,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 702 [2020-10-28 13:22:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:48,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:48,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:48,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:22:48,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:48,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-28 13:22:48,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:48,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:22:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:22:48,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-28 13:22:48,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:48,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 964 [2020-10-28 13:22:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:48,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:48,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:48,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:22:48,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:22:48,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:48,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:22:48,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:48,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1106 [2020-10-28 13:22:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:48,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:48,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:48,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:22:48,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:48,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:22:48,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:48,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 13:22:48,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:48,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:48,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1180 [2020-10-28 13:22:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:48,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:49,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:49,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:22:49,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:22:49,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:49,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-28 13:22:49,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1453 [2020-10-28 13:22:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:49,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:49,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:22:49,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:22:49,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:22:49,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:22:49,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:22:49,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:22:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:22:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:22:49,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:22:49,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:22:51,047 INFO L134 CoverageAnalysis]: Checked inductivity of 4846 backedges. 1094 proven. 580 refuted. 0 times theorem prover too weak. 3172 trivial. 0 not checked. [2020-10-28 13:22:51,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266731087] [2020-10-28 13:22:51,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:22:51,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:22:51,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501111193] [2020-10-28 13:22:51,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:22:51,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:22:51,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:22:51,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:22:51,050 INFO L87 Difference]: Start difference. First operand 20129 states and 21811 transitions. Second operand 7 states. [2020-10-28 13:22:56,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:22:56,122 INFO L93 Difference]: Finished difference Result 40594 states and 44100 transitions. [2020-10-28 13:22:56,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:22:56,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1602 [2020-10-28 13:22:56,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:22:56,159 INFO L225 Difference]: With dead ends: 40594 [2020-10-28 13:22:56,160 INFO L226 Difference]: Without dead ends: 21147 [2020-10-28 13:22:56,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:22:56,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21147 states. [2020-10-28 13:22:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21147 to 20808. [2020-10-28 13:22:56,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20808 states. [2020-10-28 13:22:56,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20808 states to 20808 states and 22353 transitions. [2020-10-28 13:22:56,533 INFO L78 Accepts]: Start accepts. Automaton has 20808 states and 22353 transitions. Word has length 1602 [2020-10-28 13:22:56,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:22:56,534 INFO L481 AbstractCegarLoop]: Abstraction has 20808 states and 22353 transitions. [2020-10-28 13:22:56,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:22:56,534 INFO L276 IsEmpty]: Start isEmpty. Operand 20808 states and 22353 transitions. [2020-10-28 13:22:56,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1669 [2020-10-28 13:22:56,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:22:56,575 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:56,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 13:22:56,576 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:22:56,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:22:56,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1080570087, now seen corresponding path program 1 times [2020-10-28 13:22:56,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:22:56,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779762383] [2020-10-28 13:22:56,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:22:56,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:22:56,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:22:57,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking...