/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:42:18,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:42:18,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:42:18,391 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:42:18,391 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:42:18,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:42:18,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:42:18,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:42:18,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:42:18,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:42:18,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:42:18,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:42:18,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:42:18,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:42:18,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:42:18,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:42:18,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:42:18,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:42:18,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:42:18,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:42:18,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:42:18,422 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:42:18,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:42:18,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:42:18,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:42:18,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:42:18,426 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:42:18,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:42:18,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:42:18,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:42:18,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:42:18,429 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:42:18,430 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:42:18,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:42:18,432 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:42:18,432 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:42:18,432 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:42:18,433 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:42:18,433 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:42:18,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:42:18,434 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:42:18,435 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 [2020-10-14 02:42:18,460 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:42:18,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:42:18,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:42:18,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:42:18,462 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:42:18,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:42:18,463 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:42:18,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:42:18,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:42:18,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:42:18,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:42:18,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:42:18,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:42:18,464 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:42:18,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:42:18,464 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:42:18,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:42:18,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:42:18,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:42:18,465 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:42:18,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:42:18,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:42:18,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:42:18,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:42:18,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:42:18,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:42:18,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:42:18,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:42:18,467 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:42:18,467 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:42:18,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:42:18,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:42:18,774 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:42:18,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:42:18,776 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:42:18,777 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label04.c [2020-10-14 02:42:18,854 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/395641f84/eb34c034cf9b4a4da9d4088aec001d40/FLAG66f77b5b5 [2020-10-14 02:42:19,601 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:42:19,602 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label04.c [2020-10-14 02:42:19,635 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/395641f84/eb34c034cf9b4a4da9d4088aec001d40/FLAG66f77b5b5 [2020-10-14 02:42:19,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/395641f84/eb34c034cf9b4a4da9d4088aec001d40 [2020-10-14 02:42:19,720 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:42:19,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:42:19,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:42:19,725 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:42:19,728 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:42:19,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:42:19" (1/1) ... [2020-10-14 02:42:19,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ef001ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:19, skipping insertion in model container [2020-10-14 02:42:19,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:42:19" (1/1) ... [2020-10-14 02:42:19,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:42:19,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:42:21,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:42:21,747 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:42:22,417 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:42:22,448 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:42:22,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:22 WrapperNode [2020-10-14 02:42:22,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:42:22,451 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:42:22,451 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:42:22,451 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:42:22,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:22" (1/1) ... [2020-10-14 02:42:22,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:22" (1/1) ... [2020-10-14 02:42:22,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:22" (1/1) ... [2020-10-14 02:42:22,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:22" (1/1) ... [2020-10-14 02:42:22,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:22" (1/1) ... [2020-10-14 02:42:22,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:22" (1/1) ... [2020-10-14 02:42:22,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:22" (1/1) ... [2020-10-14 02:42:22,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:42:22,736 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:42:22,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:42:22,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:42:22,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:22" (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 [2020-10-14 02:42:22,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:42:22,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:42:22,803 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:42:22,803 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:42:22,803 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:42:22,808 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:42:22,808 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:42:22,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:42:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:42:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:42:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:42:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:42:22,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:42:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:42:22,811 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:42:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:42:22,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:42:27,871 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:42:27,872 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:42:27,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:42:27 BoogieIcfgContainer [2020-10-14 02:42:27,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:42:27,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:42:27,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:42:27,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:42:27,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:42:19" (1/3) ... [2020-10-14 02:42:27,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9f69ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:42:27, skipping insertion in model container [2020-10-14 02:42:27,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:42:22" (2/3) ... [2020-10-14 02:42:27,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d9f69ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:42:27, skipping insertion in model container [2020-10-14 02:42:27,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:42:27" (3/3) ... [2020-10-14 02:42:27,894 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label04.c [2020-10-14 02:42:27,907 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:42:27,917 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:42:27,935 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:42:27,968 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:42:27,969 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:42:27,969 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:42:27,969 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:42:27,969 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:42:27,969 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:42:27,970 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:42:27,970 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:42:28,009 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:42:28,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-14 02:42:28,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:28,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:42:28,023 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:28,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:28,031 INFO L82 PathProgramCache]: Analyzing trace with hash 983219013, now seen corresponding path program 1 times [2020-10-14 02:42:28,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:28,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964735100] [2020-10-14 02:42:28,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:28,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:28,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:28,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:42:28,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:28,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-14 02:42:28,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:28,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:42:28,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:42:28,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:42:28,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:42:28,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:28,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:28,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:28,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:28,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:28,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 02:42:28,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:28,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:28,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:42:28,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:28,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:42:28,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964735100] [2020-10-14 02:42:28,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:42:28,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:42:28,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029161367] [2020-10-14 02:42:28,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:42:28,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:28,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:42:28,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:42:28,881 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:42:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:37,239 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:42:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:42:37,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-14 02:42:37,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:37,277 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:42:37,277 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:42:37,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:42:37,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:42:37,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:42:37,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:42:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2833 transitions. [2020-10-14 02:42:37,450 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2833 transitions. Word has length 66 [2020-10-14 02:42:37,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:37,451 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2833 transitions. [2020-10-14 02:42:37,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:42:37,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2833 transitions. [2020-10-14 02:42:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-14 02:42:37,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:37,460 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, 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] [2020-10-14 02:42:37,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:42:37,461 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:37,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:37,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1651203793, now seen corresponding path program 1 times [2020-10-14 02:42:37,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:37,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876019105] [2020-10-14 02:42:37,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:37,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:37,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:38,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:38,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:42:38,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:42:38,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1276 [2020-10-14 02:42:38,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:38,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:38,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:38,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-14 02:42:38,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 02:42:38,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:42:38,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:38,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:38,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:38,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:38,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:38,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:42:38,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:38,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:38,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:38,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:38,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:38,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:38,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:38,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:39,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:39,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:42:39,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:39,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 02:42:39,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:39,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:39,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:39,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:39,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:42:39,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:42:39,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876019105] [2020-10-14 02:42:39,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:39,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:42:39,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128950045] [2020-10-14 02:42:39,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:42:39,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:39,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:42:39,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:42:39,074 INFO L87 Difference]: Start difference. First operand 1553 states and 2833 transitions. Second operand 5 states. [2020-10-14 02:42:49,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:49,178 INFO L93 Difference]: Finished difference Result 4672 states and 8592 transitions. [2020-10-14 02:42:49,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:42:49,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-14 02:42:49,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:49,200 INFO L225 Difference]: With dead ends: 4672 [2020-10-14 02:42:49,200 INFO L226 Difference]: Without dead ends: 3125 [2020-10-14 02:42:49,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:42:49,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-14 02:42:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3108. [2020-10-14 02:42:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3108 states. [2020-10-14 02:42:49,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4806 transitions. [2020-10-14 02:42:49,315 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 4806 transitions. Word has length 139 [2020-10-14 02:42:49,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:49,319 INFO L479 AbstractCegarLoop]: Abstraction has 3108 states and 4806 transitions. [2020-10-14 02:42:49,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:42:49,319 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 4806 transitions. [2020-10-14 02:42:49,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-14 02:42:49,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:49,332 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, 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] [2020-10-14 02:42:49,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:42:49,332 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:49,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:49,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1069198675, now seen corresponding path program 1 times [2020-10-14 02:42:49,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:49,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1715460135] [2020-10-14 02:42:49,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:49,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:49,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:49,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:50,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:50,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-14 02:42:50,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:42:50,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-10-14 02:42:50,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:50,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:50,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:50,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:42:50,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 02:42:50,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:50,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:50,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:50,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:50,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:50,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:50,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:42:50,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:50,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:50,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:50,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:50,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:50,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:50,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:50,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:42:50,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:50,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 02:42:50,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:50,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:50,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:42:50,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:42:50,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1715460135] [2020-10-14 02:42:50,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:50,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:42:50,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283430268] [2020-10-14 02:42:50,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:42:50,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:50,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:42:50,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:42:50,831 INFO L87 Difference]: Start difference. First operand 3108 states and 4806 transitions. Second operand 5 states. [2020-10-14 02:43:00,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:43:00,534 INFO L93 Difference]: Finished difference Result 9332 states and 14624 transitions. [2020-10-14 02:43:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:43:00,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-14 02:43:00,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:43:00,576 INFO L225 Difference]: With dead ends: 9332 [2020-10-14 02:43:00,577 INFO L226 Difference]: Without dead ends: 6230 [2020-10-14 02:43:00,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:43:00,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2020-10-14 02:43:00,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 6226. [2020-10-14 02:43:00,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6226 states. [2020-10-14 02:43:00,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6226 states to 6226 states and 8654 transitions. [2020-10-14 02:43:00,783 INFO L78 Accepts]: Start accepts. Automaton has 6226 states and 8654 transitions. Word has length 141 [2020-10-14 02:43:00,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:43:00,790 INFO L479 AbstractCegarLoop]: Abstraction has 6226 states and 8654 transitions. [2020-10-14 02:43:00,790 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:43:00,790 INFO L276 IsEmpty]: Start isEmpty. Operand 6226 states and 8654 transitions. [2020-10-14 02:43:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-14 02:43:00,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:43:00,793 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, 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] [2020-10-14 02:43:00,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:43:00,794 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:43:00,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:43:00,794 INFO L82 PathProgramCache]: Analyzing trace with hash 209796673, now seen corresponding path program 1 times [2020-10-14 02:43:00,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:43:00,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481102929] [2020-10-14 02:43:00,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:43:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:00,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:01,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:01,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:01,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-14 02:43:01,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:43:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 971 [2020-10-14 02:43:01,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:01,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-14 02:43:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 02:43:01,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:01,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:43:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:01,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:01,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:01,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:43:01,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:01,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:43:01,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:01,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:01,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:43:01,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:01,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:43:01,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:01,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:43:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:01,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:02,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:02,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 02:43:02,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:02,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 02:43:02,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:02,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:02,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:43:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:02,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 02:43:02,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:43:02,101 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481102929] [2020-10-14 02:43:02,101 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:43:02,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:43:02,102 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744957440] [2020-10-14 02:43:02,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:43:02,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:43:02,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:43:02,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:43:02,106 INFO L87 Difference]: Start difference. First operand 6226 states and 8654 transitions. Second operand 5 states. [2020-10-14 02:43:13,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:43:13,363 INFO L93 Difference]: Finished difference Result 18663 states and 26528 transitions. [2020-10-14 02:43:13,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:43:13,365 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-14 02:43:13,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:43:13,434 INFO L225 Difference]: With dead ends: 18663 [2020-10-14 02:43:13,434 INFO L226 Difference]: Without dead ends: 12443 [2020-10-14 02:43:13,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:43:13,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12443 states. [2020-10-14 02:43:13,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12443 to 12435. [2020-10-14 02:43:13,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12435 states. [2020-10-14 02:43:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12435 states to 12435 states and 16377 transitions. [2020-10-14 02:43:13,777 INFO L78 Accepts]: Start accepts. Automaton has 12435 states and 16377 transitions. Word has length 147 [2020-10-14 02:43:13,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:43:13,777 INFO L479 AbstractCegarLoop]: Abstraction has 12435 states and 16377 transitions. [2020-10-14 02:43:13,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:43:13,778 INFO L276 IsEmpty]: Start isEmpty. Operand 12435 states and 16377 transitions. [2020-10-14 02:43:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-14 02:43:13,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:43:13,786 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:43:13,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:43:13,786 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:43:13,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:43:13,787 INFO L82 PathProgramCache]: Analyzing trace with hash -907290255, now seen corresponding path program 1 times [2020-10-14 02:43:13,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:43:13,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94241002] [2020-10-14 02:43:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:43:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:13,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:13,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:14,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:15,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:17,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:17,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-14 02:43:17,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:43:17,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4127 [2020-10-14 02:43:17,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:17,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:17,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:17,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:43:17,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 02:43:17,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:43:18,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:43:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:18,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:18,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:43:18,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:18,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:43:18,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:18,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:43:18,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:18,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:43:18,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:18,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:43:18,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:18,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:18,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:18,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:43:18,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:18,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 02:43:18,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:18,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:43:18,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:18,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:43:18,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 02:43:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:43:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:18,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:18,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:18,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 02:43:18,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:18,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-14 02:43:18,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:18,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:43:18,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 02:43:18,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:18,647 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:43:18,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94241002] [2020-10-14 02:43:18,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:43:18,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:43:18,649 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916913275] [2020-10-14 02:43:18,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:43:18,650 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:43:18,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:43:18,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:43:18,651 INFO L87 Difference]: Start difference. First operand 12435 states and 16377 transitions. Second operand 8 states. [2020-10-14 02:43:45,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:43:45,312 INFO L93 Difference]: Finished difference Result 32064 states and 43480 transitions. [2020-10-14 02:43:45,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:43:45,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 250 [2020-10-14 02:43:45,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:43:45,416 INFO L225 Difference]: With dead ends: 32064 [2020-10-14 02:43:45,417 INFO L226 Difference]: Without dead ends: 19635 [2020-10-14 02:43:45,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 02:43:45,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19635 states. [2020-10-14 02:43:45,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19635 to 19535. [2020-10-14 02:43:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19535 states. [2020-10-14 02:43:45,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19535 states to 19535 states and 24801 transitions. [2020-10-14 02:43:45,968 INFO L78 Accepts]: Start accepts. Automaton has 19535 states and 24801 transitions. Word has length 250 [2020-10-14 02:43:45,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:43:45,968 INFO L479 AbstractCegarLoop]: Abstraction has 19535 states and 24801 transitions. [2020-10-14 02:43:45,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:43:45,969 INFO L276 IsEmpty]: Start isEmpty. Operand 19535 states and 24801 transitions. [2020-10-14 02:43:45,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-14 02:43:45,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:43:45,980 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:43:45,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:43:45,981 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:43:45,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:43:45,981 INFO L82 PathProgramCache]: Analyzing trace with hash -905396256, now seen corresponding path program 1 times [2020-10-14 02:43:45,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:43:45,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644188670] [2020-10-14 02:43:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:43:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:46,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:47,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:47,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:50,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:50,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 02:43:50,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:43:50,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4124 [2020-10-14 02:43:50,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:50,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:50,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:43:50,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 02:43:50,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:50,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:43:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:50,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:50,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:50,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:43:50,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:50,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:43:50,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:50,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:50,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:43:50,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:50,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:43:50,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:43:50,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:43:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:50,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:50,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:50,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:43:50,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:50,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 02:43:50,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:50,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:50,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:43:50,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:50,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:43:50,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:43:50,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:43:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:50,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:50,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:50,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-14 02:43:50,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:50,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-14 02:43:50,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:50,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:43:50,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-14 02:43:50,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:43:50,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644188670] [2020-10-14 02:43:50,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:43:50,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:43:50,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114880275] [2020-10-14 02:43:50,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:43:50,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:43:50,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:43:50,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:43:50,929 INFO L87 Difference]: Start difference. First operand 19535 states and 24801 transitions. Second operand 8 states. [2020-10-14 02:44:10,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:10,952 INFO L93 Difference]: Finished difference Result 46352 states and 60340 transitions. [2020-10-14 02:44:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 02:44:10,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 261 [2020-10-14 02:44:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:11,109 INFO L225 Difference]: With dead ends: 46352 [2020-10-14 02:44:11,110 INFO L226 Difference]: Without dead ends: 27592 [2020-10-14 02:44:11,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 02:44:11,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27592 states. [2020-10-14 02:44:11,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27592 to 27539. [2020-10-14 02:44:11,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27539 states. [2020-10-14 02:44:11,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27539 states to 27539 states and 33593 transitions. [2020-10-14 02:44:11,892 INFO L78 Accepts]: Start accepts. Automaton has 27539 states and 33593 transitions. Word has length 261 [2020-10-14 02:44:11,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:11,893 INFO L479 AbstractCegarLoop]: Abstraction has 27539 states and 33593 transitions. [2020-10-14 02:44:11,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:44:11,893 INFO L276 IsEmpty]: Start isEmpty. Operand 27539 states and 33593 transitions. [2020-10-14 02:44:11,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-14 02:44:11,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:11,909 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:44:11,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:44:11,910 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:11,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:11,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1225430489, now seen corresponding path program 1 times [2020-10-14 02:44:11,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:11,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518346922] [2020-10-14 02:44:11,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:11,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:11,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:12,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:13,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:14,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:16,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:16,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-10-14 02:44:16,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:44:16,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4677 [2020-10-14 02:44:16,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:16,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:16,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:16,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 109 [2020-10-14 02:44:16,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 02:44:16,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:16,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:16,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:16,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:16,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:16,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:16,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:16,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:44:16,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:16,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:16,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:16,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:16,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:16,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:16,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:16,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:16,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:16,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-14 02:44:16,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:16,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-14 02:44:16,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:16,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:16,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:16,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:16,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-14 02:44:16,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:16,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-14 02:44:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:16,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:17,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:17,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 02:44:17,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:17,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-14 02:44:17,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:17,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:17,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:44:17,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 02:44:17,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:17,381 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:44:17,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518346922] [2020-10-14 02:44:17,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:17,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:44:17,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085010253] [2020-10-14 02:44:17,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:44:17,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:17,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:44:17,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:44:17,384 INFO L87 Difference]: Start difference. First operand 27539 states and 33593 transitions. Second operand 7 states. [2020-10-14 02:44:36,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:36,203 INFO L93 Difference]: Finished difference Result 66361 states and 84245 transitions. [2020-10-14 02:44:36,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 02:44:36,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-14 02:44:36,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:36,382 INFO L225 Difference]: With dead ends: 66361 [2020-10-14 02:44:36,383 INFO L226 Difference]: Without dead ends: 38832 [2020-10-14 02:44:36,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:44:36,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38832 states. [2020-10-14 02:44:37,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38832 to 38769. [2020-10-14 02:44:37,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38769 states. [2020-10-14 02:44:37,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38769 states to 38769 states and 47385 transitions. [2020-10-14 02:44:37,276 INFO L78 Accepts]: Start accepts. Automaton has 38769 states and 47385 transitions. Word has length 270 [2020-10-14 02:44:37,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:37,277 INFO L479 AbstractCegarLoop]: Abstraction has 38769 states and 47385 transitions. [2020-10-14 02:44:37,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:44:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand 38769 states and 47385 transitions. [2020-10-14 02:44:37,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-14 02:44:37,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:37,289 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:44:37,289 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:44:37,289 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:37,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:37,290 INFO L82 PathProgramCache]: Analyzing trace with hash 238769617, now seen corresponding path program 1 times [2020-10-14 02:44:37,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:37,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860541607] [2020-10-14 02:44:37,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:37,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:37,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:38,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:41,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:42,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:42,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-14 02:44:42,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:44:42,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 02:44:42,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:42,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 02:44:42,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 02:44:42,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:42,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:42,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:42,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:42,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:42,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:42,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:42,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:44:42,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:42,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:42,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:42,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:42,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:44:42,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:42,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:42,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:42,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:42,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 02:44:42,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:42,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-14 02:44:42,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:42,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:42,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:42,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 02:44:42,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:42,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 02:44:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:42,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:43,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:43,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 02:44:43,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:43,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-14 02:44:43,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:43,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:44:43,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 02:44:43,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:44:43,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860541607] [2020-10-14 02:44:43,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:43,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:44:43,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120477014] [2020-10-14 02:44:43,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:44:43,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:43,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:44:43,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:44:43,454 INFO L87 Difference]: Start difference. First operand 38769 states and 47385 transitions. Second operand 7 states. [2020-10-14 02:45:02,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:45:02,423 INFO L93 Difference]: Finished difference Result 77153 states and 94740 transitions. [2020-10-14 02:45:02,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:45:02,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-10-14 02:45:02,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:45:02,583 INFO L225 Difference]: With dead ends: 77153 [2020-10-14 02:45:02,584 INFO L226 Difference]: Without dead ends: 39157 [2020-10-14 02:45:02,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:45:02,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39157 states. [2020-10-14 02:45:03,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39157 to 39085. [2020-10-14 02:45:03,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39085 states. [2020-10-14 02:45:03,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39085 states to 39085 states and 44858 transitions. [2020-10-14 02:45:03,519 INFO L78 Accepts]: Start accepts. Automaton has 39085 states and 44858 transitions. Word has length 278 [2020-10-14 02:45:03,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:45:03,520 INFO L479 AbstractCegarLoop]: Abstraction has 39085 states and 44858 transitions. [2020-10-14 02:45:03,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:45:03,520 INFO L276 IsEmpty]: Start isEmpty. Operand 39085 states and 44858 transitions. [2020-10-14 02:45:03,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-14 02:45:03,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:45:03,537 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:45:03,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:45:03,538 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:45:03,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:45:03,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1739041154, now seen corresponding path program 1 times [2020-10-14 02:45:03,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:45:03,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331737668] [2020-10-14 02:45:03,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:45:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:03,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:05,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:08,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:08,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-14 02:45:08,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:45:08,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-14 02:45:08,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:08,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:08,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:08,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-14 02:45:08,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-14 02:45:08,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:45:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:08,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:08,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:08,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:45:08,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:08,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:45:08,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:08,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:08,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:45:08,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:08,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:45:08,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:08,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:45:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:08,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:09,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:09,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:45:09,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:09,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-14 02:45:09,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:09,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:09,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:45:09,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:09,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:45:09,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:09,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 02:45:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:09,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:09,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 02:45:09,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:09,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 02:45:09,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:09,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:09,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:45:09,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:09,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 02:45:09,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:09,834 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 119 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-14 02:45:09,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331737668] [2020-10-14 02:45:09,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:45:09,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:45:09,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11528530] [2020-10-14 02:45:09,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:45:09,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:45:09,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:45:09,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:45:09,848 INFO L87 Difference]: Start difference. First operand 39085 states and 44858 transitions. Second operand 5 states. [2020-10-14 02:45:36,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:45:36,872 INFO L93 Difference]: Finished difference Result 106223 states and 124344 transitions. [2020-10-14 02:45:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:45:36,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 315 [2020-10-14 02:45:36,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:45:37,036 INFO L225 Difference]: With dead ends: 106223 [2020-10-14 02:45:37,037 INFO L226 Difference]: Without dead ends: 67911 [2020-10-14 02:45:37,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:45:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67911 states. [2020-10-14 02:45:38,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67911 to 64059. [2020-10-14 02:45:38,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64059 states. [2020-10-14 02:45:38,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64059 states to 64059 states and 74567 transitions. [2020-10-14 02:45:38,165 INFO L78 Accepts]: Start accepts. Automaton has 64059 states and 74567 transitions. Word has length 315 [2020-10-14 02:45:38,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:45:38,165 INFO L479 AbstractCegarLoop]: Abstraction has 64059 states and 74567 transitions. [2020-10-14 02:45:38,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:45:38,166 INFO L276 IsEmpty]: Start isEmpty. Operand 64059 states and 74567 transitions. [2020-10-14 02:45:38,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-14 02:45:38,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:45:38,181 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:45:38,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:45:38,181 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:45:38,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:45:38,182 INFO L82 PathProgramCache]: Analyzing trace with hash -183980272, now seen corresponding path program 1 times [2020-10-14 02:45:38,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:45:38,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749381562] [2020-10-14 02:45:38,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:45:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:38,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:39,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:39,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-10-14 02:45:39,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:39,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-14 02:45:39,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:39,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:45:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:45:39,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 02:45:39,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:45:39,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:45:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:39,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:39,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:39,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:45:39,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:39,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:45:39,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:39,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:45:39,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:39,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:45:39,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:39,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:45:39,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:39,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:39,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:39,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 02:45:39,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:39,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 02:45:39,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:39,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:39,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:39,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:45:39,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 02:45:39,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:45:39,933 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:45:39,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749381562] [2020-10-14 02:45:39,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:45:39,934 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 02:45:39,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655304114] [2020-10-14 02:45:39,935 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:45:39,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:45:39,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:45:39,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:45:39,935 INFO L87 Difference]: Start difference. First operand 64059 states and 74567 transitions. Second operand 7 states. [2020-10-14 02:46:00,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:46:00,234 INFO L93 Difference]: Finished difference Result 156615 states and 184658 transitions. [2020-10-14 02:46:00,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 02:46:00,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 334 [2020-10-14 02:46:00,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted.