/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/ntdrivers-simplified/floppy_simpl3.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 00:16:39,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 00:16:39,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 00:16:39,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 00:16:39,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 00:16:39,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 00:16:39,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 00:16:39,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 00:16:39,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 00:16:39,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 00:16:39,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 00:16:39,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 00:16:39,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 00:16:39,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 00:16:39,846 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 00:16:39,847 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 00:16:39,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 00:16:39,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 00:16:39,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 00:16:39,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 00:16:39,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 00:16:39,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 00:16:39,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 00:16:39,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 00:16:39,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 00:16:39,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 00:16:39,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 00:16:39,882 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 00:16:39,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 00:16:39,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 00:16:39,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 00:16:39,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 00:16:39,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 00:16:39,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 00:16:39,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 00:16:39,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 00:16:39,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 00:16:39,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 00:16:39,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 00:16:39,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 00:16:39,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 00:16:39,894 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 [2020-10-15 00:16:39,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 00:16:39,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 00:16:39,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 00:16:39,934 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 00:16:39,934 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 00:16:39,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 00:16:39,934 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 00:16:39,935 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 00:16:39,935 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 00:16:39,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 00:16:39,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 00:16:39,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 00:16:39,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 00:16:39,937 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 00:16:39,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 00:16:39,937 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 00:16:39,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 00:16:39,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 00:16:39,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 00:16:39,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 00:16:39,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 00:16:39,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 00:16:39,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 00:16:39,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 00:16:39,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 00:16:39,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 00:16:39,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 00:16:39,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 00:16:39,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 00:16:39,940 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 00:16:40,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 00:16:40,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 00:16:40,272 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 00:16:40,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 00:16:40,273 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 00:16:40,274 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2020-10-15 00:16:40,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dc16db6c/311ab4d5bdf942f78698388dd0e6b67d/FLAG5b80fc0ee [2020-10-15 00:16:40,816 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 00:16:40,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/floppy_simpl3.cil-1.c [2020-10-15 00:16:40,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dc16db6c/311ab4d5bdf942f78698388dd0e6b67d/FLAG5b80fc0ee [2020-10-15 00:16:41,143 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dc16db6c/311ab4d5bdf942f78698388dd0e6b67d [2020-10-15 00:16:41,152 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 00:16:41,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 00:16:41,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 00:16:41,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 00:16:41,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 00:16:41,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:16:41" (1/1) ... [2020-10-15 00:16:41,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ecced43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:41, skipping insertion in model container [2020-10-15 00:16:41,163 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:16:41" (1/1) ... [2020-10-15 00:16:41,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 00:16:41,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 00:16:41,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:16:41,546 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 00:16:41,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 00:16:41,750 INFO L208 MainTranslator]: Completed translation [2020-10-15 00:16:41,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:41 WrapperNode [2020-10-15 00:16:41,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 00:16:41,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 00:16:41,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 00:16:41,752 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 00:16:41,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:41" (1/1) ... [2020-10-15 00:16:41,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:41" (1/1) ... [2020-10-15 00:16:41,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:41" (1/1) ... [2020-10-15 00:16:41,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:41" (1/1) ... [2020-10-15 00:16:41,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:41" (1/1) ... [2020-10-15 00:16:41,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:41" (1/1) ... [2020-10-15 00:16:41,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:41" (1/1) ... [2020-10-15 00:16:41,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 00:16:41,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 00:16:41,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 00:16:41,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 00:16:41,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:41" (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 [2020-10-15 00:16:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 00:16:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 00:16:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-15 00:16:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-15 00:16:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure FlAcpiConfigureFloppy [2020-10-15 00:16:41,896 INFO L138 BoogieDeclarations]: Found implementation of procedure FlQueueIrpToThread [2020-10-15 00:16:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnp [2020-10-15 00:16:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyStartDevice [2020-10-15 00:16:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyPnpComplete [2020-10-15 00:16:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure FlFdcDeviceIo [2020-10-15 00:16:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure FloppyProcessQueuedRequests [2020-10-15 00:16:41,897 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-15 00:16:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 00:16:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2020-10-15 00:16:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure IoDeleteSymbolicLink [2020-10-15 00:16:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure IoQueryDeviceDescription [2020-10-15 00:16:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure IoRegisterDeviceInterface [2020-10-15 00:16:41,898 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2020-10-15 00:16:41,899 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-15 00:16:41,899 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-15 00:16:41,899 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-15 00:16:41,899 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-15 00:16:41,899 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-15 00:16:41,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ObReferenceObjectByHandle [2020-10-15 00:16:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure PsCreateSystemThread [2020-10-15 00:16:41,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ZwClose [2020-10-15 00:16:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 00:16:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-15 00:16:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 00:16:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-15 00:16:41,900 INFO L130 BoogieDeclarations]: Found specification of procedure FlAcpiConfigureFloppy [2020-10-15 00:16:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure FlQueueIrpToThread [2020-10-15 00:16:41,901 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnp [2020-10-15 00:16:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyStartDevice [2020-10-15 00:16:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyPnpComplete [2020-10-15 00:16:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure FlFdcDeviceIo [2020-10-15 00:16:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2020-10-15 00:16:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure IoDeleteSymbolicLink [2020-10-15 00:16:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure IoQueryDeviceDescription [2020-10-15 00:16:41,902 INFO L130 BoogieDeclarations]: Found specification of procedure IoRegisterDeviceInterface [2020-10-15 00:16:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2020-10-15 00:16:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-15 00:16:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-15 00:16:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-15 00:16:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure ObReferenceObjectByHandle [2020-10-15 00:16:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure PsCreateSystemThread [2020-10-15 00:16:41,903 INFO L130 BoogieDeclarations]: Found specification of procedure ZwClose [2020-10-15 00:16:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-15 00:16:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-15 00:16:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-15 00:16:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure FloppyProcessQueuedRequests [2020-10-15 00:16:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-15 00:16:41,904 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 00:16:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-15 00:16:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 00:16:41,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 00:16:42,125 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:42,229 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:16:42,229 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:16:42,239 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:42,249 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:16:42,250 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:16:42,257 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:42,485 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-10-15 00:16:42,485 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-10-15 00:16:42,489 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:42,546 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2020-10-15 00:16:42,547 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2020-10-15 00:16:42,557 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:42,573 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-15 00:16:42,573 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-15 00:16:42,646 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:42,656 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:16:42,656 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:16:42,657 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:42,665 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:16:42,665 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:16:42,665 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:42,675 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:16:42,675 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:16:42,719 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:42,769 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-15 00:16:42,769 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-15 00:16:42,796 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:42,802 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:16:42,802 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:16:42,803 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:42,810 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:16:42,811 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:16:42,811 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-15 00:16:42,818 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2020-10-15 00:16:42,818 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2020-10-15 00:16:42,837 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 00:16:42,838 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-15 00:16:42,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:16:42 BoogieIcfgContainer [2020-10-15 00:16:42,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 00:16:42,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 00:16:42,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 00:16:42,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 00:16:42,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:16:41" (1/3) ... [2020-10-15 00:16:42,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd68f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:16:42, skipping insertion in model container [2020-10-15 00:16:42,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:16:41" (2/3) ... [2020-10-15 00:16:42,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bd68f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:16:42, skipping insertion in model container [2020-10-15 00:16:42,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:16:42" (3/3) ... [2020-10-15 00:16:42,852 INFO L109 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-1.c [2020-10-15 00:16:42,862 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 00:16:42,870 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 00:16:42,884 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 00:16:42,910 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 00:16:42,910 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 00:16:42,911 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 00:16:42,911 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 00:16:42,911 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 00:16:42,911 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 00:16:42,911 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 00:16:42,911 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 00:16:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states. [2020-10-15 00:16:42,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 00:16:42,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:42,943 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] [2020-10-15 00:16:42,943 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:42,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:42,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1935172457, now seen corresponding path program 1 times [2020-10-15 00:16:42,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:42,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1268598606] [2020-10-15 00:16:42,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:43,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:43,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:43,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:43,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:43,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:43,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:44,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:44,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:16:44,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:16:44,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 936 [2020-10-15 00:16:44,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:44,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:16:44,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:16:44,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 00:16:44,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:44,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:44,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:44,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:44,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:44,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:16:44,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:44,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:44,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:44,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:44,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:44,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:44,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:44,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:44,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:44,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:44,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:16:44,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:44,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:44,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:44,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:44,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:44,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:44,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1268598606] [2020-10-15 00:16:44,311 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:44,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:16:44,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294210990] [2020-10-15 00:16:44,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:16:44,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:44,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:16:44,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:16:44,335 INFO L87 Difference]: Start difference. First operand 302 states. Second operand 5 states. [2020-10-15 00:16:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:45,945 INFO L93 Difference]: Finished difference Result 640 states and 926 transitions. [2020-10-15 00:16:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:16:45,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-15 00:16:45,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:45,965 INFO L225 Difference]: With dead ends: 640 [2020-10-15 00:16:45,965 INFO L226 Difference]: Without dead ends: 420 [2020-10-15 00:16:45,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:16:45,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2020-10-15 00:16:46,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 366. [2020-10-15 00:16:46,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-10-15 00:16:46,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 483 transitions. [2020-10-15 00:16:46,085 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 483 transitions. Word has length 20 [2020-10-15 00:16:46,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:46,085 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 483 transitions. [2020-10-15 00:16:46,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:16:46,086 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 483 transitions. [2020-10-15 00:16:46,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 00:16:46,087 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:46,087 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] [2020-10-15 00:16:46,087 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 00:16:46,087 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:46,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:46,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1949517366, now seen corresponding path program 1 times [2020-10-15 00:16:46,088 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:46,088 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268193529] [2020-10-15 00:16:46,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:46,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:46,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:46,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:16:46,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:16:46,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-15 00:16:46,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:46,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:46,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:46,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-15 00:16:46,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:16:46,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:46,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:46,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:46,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:46,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:46,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:46,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:46,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:46,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:46,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:46,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:46,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:46,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:46,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:46,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:46,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:46,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:16:46,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:46,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:46,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:46,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:46,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:16:46,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:46,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:46,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268193529] [2020-10-15 00:16:46,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:46,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 00:16:46,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769221142] [2020-10-15 00:16:46,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 00:16:46,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:46,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 00:16:46,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:16:46,403 INFO L87 Difference]: Start difference. First operand 366 states and 483 transitions. Second operand 5 states. [2020-10-15 00:16:47,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:47,520 INFO L93 Difference]: Finished difference Result 422 states and 562 transitions. [2020-10-15 00:16:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 00:16:47,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-15 00:16:47,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:47,531 INFO L225 Difference]: With dead ends: 422 [2020-10-15 00:16:47,531 INFO L226 Difference]: Without dead ends: 406 [2020-10-15 00:16:47,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:16:47,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2020-10-15 00:16:47,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 366. [2020-10-15 00:16:47,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-10-15 00:16:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 482 transitions. [2020-10-15 00:16:47,605 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 482 transitions. Word has length 20 [2020-10-15 00:16:47,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:47,605 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 482 transitions. [2020-10-15 00:16:47,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 00:16:47,605 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 482 transitions. [2020-10-15 00:16:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-15 00:16:47,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:47,607 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] [2020-10-15 00:16:47,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 00:16:47,607 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:47,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:47,607 INFO L82 PathProgramCache]: Analyzing trace with hash -657914795, now seen corresponding path program 1 times [2020-10-15 00:16:47,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:47,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299339160] [2020-10-15 00:16:47,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:47,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:47,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:48,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:48,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 00:16:48,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:16:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1251 [2020-10-15 00:16:48,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:48,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:16:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 00:16:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:16:48,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:49,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:49,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:49,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:49,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:49,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:49,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:16:49,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:49,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:49,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:49,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:49,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:49,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:49,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:49,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:49,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:49,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:49,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:49,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:16:49,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:49,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:49,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:16:49,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:49,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:49,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:49,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:49,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:49,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:49,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:49,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:49,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:16:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:49,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:49,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299339160] [2020-10-15 00:16:49,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:49,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 00:16:49,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845574445] [2020-10-15 00:16:49,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 00:16:49,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:49,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 00:16:49,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:16:49,115 INFO L87 Difference]: Start difference. First operand 366 states and 482 transitions. Second operand 7 states. [2020-10-15 00:16:51,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:51,374 INFO L93 Difference]: Finished difference Result 1086 states and 1437 transitions. [2020-10-15 00:16:51,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:16:51,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-15 00:16:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:51,381 INFO L225 Difference]: With dead ends: 1086 [2020-10-15 00:16:51,381 INFO L226 Difference]: Without dead ends: 741 [2020-10-15 00:16:51,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:16:51,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-10-15 00:16:51,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 515. [2020-10-15 00:16:51,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2020-10-15 00:16:51,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 672 transitions. [2020-10-15 00:16:51,433 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 672 transitions. Word has length 28 [2020-10-15 00:16:51,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:51,433 INFO L479 AbstractCegarLoop]: Abstraction has 515 states and 672 transitions. [2020-10-15 00:16:51,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 00:16:51,434 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 672 transitions. [2020-10-15 00:16:51,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-15 00:16:51,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:51,435 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] [2020-10-15 00:16:51,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 00:16:51,435 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:51,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:51,436 INFO L82 PathProgramCache]: Analyzing trace with hash 151431831, now seen corresponding path program 1 times [2020-10-15 00:16:51,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:51,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135312063] [2020-10-15 00:16:51,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:51,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:51,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:51,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 00:16:51,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-15 00:16:51,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:51,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:16:51,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:16:51,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-15 00:16:51,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:51,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:51,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:51,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:51,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:51,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:51,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:16:51,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:51,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:51,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:51,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:51,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:51,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:51,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:51,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:51,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:51,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:51,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:51,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:51,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:51,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:51,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:51,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:51,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:51,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:51,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:51,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:51,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:51,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:51,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:51,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:51,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135312063] [2020-10-15 00:16:51,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:51,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:16:51,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986198408] [2020-10-15 00:16:51,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:16:51,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:51,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:16:51,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:16:51,806 INFO L87 Difference]: Start difference. First operand 515 states and 672 transitions. Second operand 6 states. [2020-10-15 00:16:53,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:53,663 INFO L93 Difference]: Finished difference Result 946 states and 1255 transitions. [2020-10-15 00:16:53,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:16:53,663 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-15 00:16:53,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:53,670 INFO L225 Difference]: With dead ends: 946 [2020-10-15 00:16:53,670 INFO L226 Difference]: Without dead ends: 777 [2020-10-15 00:16:53,671 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:16:53,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2020-10-15 00:16:53,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 646. [2020-10-15 00:16:53,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-10-15 00:16:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 843 transitions. [2020-10-15 00:16:53,729 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 843 transitions. Word has length 28 [2020-10-15 00:16:53,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:53,729 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 843 transitions. [2020-10-15 00:16:53,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:16:53,729 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 843 transitions. [2020-10-15 00:16:53,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-15 00:16:53,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:53,730 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] [2020-10-15 00:16:53,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 00:16:53,731 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:53,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:53,731 INFO L82 PathProgramCache]: Analyzing trace with hash -523056827, now seen corresponding path program 1 times [2020-10-15 00:16:53,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:53,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512975006] [2020-10-15 00:16:53,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:53,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:53,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 00:16:53,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:53,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-15 00:16:53,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:53,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:53,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:16:53,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:16:53,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:16:53,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:54,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:54,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:54,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:54,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:54,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:54,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:54,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:54,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:54,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:54,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:54,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:54,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:54,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:54,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:54,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:54,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:54,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:54,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:54,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:54,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:54,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:54,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:54,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:54,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:54,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:54,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:54,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:54,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:54,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:54,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:54,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:54,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:54,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:54,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:54,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:54,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512975006] [2020-10-15 00:16:54,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:54,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:16:54,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026204847] [2020-10-15 00:16:54,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:16:54,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:54,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:16:54,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:16:54,168 INFO L87 Difference]: Start difference. First operand 646 states and 843 transitions. Second operand 6 states. [2020-10-15 00:16:55,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:55,740 INFO L93 Difference]: Finished difference Result 1230 states and 1618 transitions. [2020-10-15 00:16:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:16:55,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2020-10-15 00:16:55,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:55,747 INFO L225 Difference]: With dead ends: 1230 [2020-10-15 00:16:55,747 INFO L226 Difference]: Without dead ends: 861 [2020-10-15 00:16:55,749 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:16:55,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2020-10-15 00:16:55,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 804. [2020-10-15 00:16:55,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2020-10-15 00:16:55,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1064 transitions. [2020-10-15 00:16:55,817 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1064 transitions. Word has length 30 [2020-10-15 00:16:55,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:55,817 INFO L479 AbstractCegarLoop]: Abstraction has 804 states and 1064 transitions. [2020-10-15 00:16:55,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:16:55,817 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1064 transitions. [2020-10-15 00:16:55,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-15 00:16:55,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:55,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:16:55,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 00:16:55,820 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:55,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:55,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1040933871, now seen corresponding path program 1 times [2020-10-15 00:16:55,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:55,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [156101560] [2020-10-15 00:16:55,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:55,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:56,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:56,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-15 00:16:56,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:56,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-15 00:16:56,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:56,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:56,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:16:56,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:16:56,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 00:16:56,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:56,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:56,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:56,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:56,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:56,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:56,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:56,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:56,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:56,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:56,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:56,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:56,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:56,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:56,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:56,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:56,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:16:56,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:56,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:56,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:56,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:56,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:56,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:56,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:56,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:56,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:56,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:56,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:56,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:56,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:56,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:56,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:56,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:56,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:56,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [156101560] [2020-10-15 00:16:56,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:56,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:16:56,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242501069] [2020-10-15 00:16:56,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:16:56,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:56,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:16:56,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:16:56,277 INFO L87 Difference]: Start difference. First operand 804 states and 1064 transitions. Second operand 6 states. [2020-10-15 00:16:57,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:16:57,639 INFO L93 Difference]: Finished difference Result 844 states and 1109 transitions. [2020-10-15 00:16:57,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:16:57,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-10-15 00:16:57,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:16:57,645 INFO L225 Difference]: With dead ends: 844 [2020-10-15 00:16:57,645 INFO L226 Difference]: Without dead ends: 841 [2020-10-15 00:16:57,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:16:57,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2020-10-15 00:16:57,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 803. [2020-10-15 00:16:57,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-10-15 00:16:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1061 transitions. [2020-10-15 00:16:57,711 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1061 transitions. Word has length 34 [2020-10-15 00:16:57,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:16:57,712 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 1061 transitions. [2020-10-15 00:16:57,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:16:57,712 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1061 transitions. [2020-10-15 00:16:57,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 00:16:57,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:16:57,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:16:57,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 00:16:57,715 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:16:57,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:16:57,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1618645229, now seen corresponding path program 1 times [2020-10-15 00:16:57,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:16:57,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953480326] [2020-10-15 00:16:57,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:16:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:57,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:57,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:57,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:58,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:58,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:16:58,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:16:58,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-10-15 00:16:58,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:58,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:58,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:16:58,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:16:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-15 00:16:58,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:58,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:16:58,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:58,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:58,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:58,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:58,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:58,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:16:58,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:58,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:16:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:16:58,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:16:58,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:16:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:58,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:58,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:58,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:58,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:58,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:58,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:58,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:58,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:58,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:16:58,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:58,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:16:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:58,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:58,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:58,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:16:58,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:58,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:16:58,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:58,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:58,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:16:58,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:58,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:16:58,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:58,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-15 00:16:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:16:58,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:16:58,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:16:58,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:16:58,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:16:58,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:16:58,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:16:58,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:16:58,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:16:58,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:16:58,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:16:58,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:16:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:16:58,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953480326] [2020-10-15 00:16:58,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:16:58,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:16:58,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981548851] [2020-10-15 00:16:58,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:16:58,776 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:16:58,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:16:58,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:16:58,777 INFO L87 Difference]: Start difference. First operand 803 states and 1061 transitions. Second operand 10 states. [2020-10-15 00:16:59,132 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-15 00:17:02,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:02,370 INFO L93 Difference]: Finished difference Result 1592 states and 2105 transitions. [2020-10-15 00:17:02,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:17:02,371 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-10-15 00:17:02,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:02,378 INFO L225 Difference]: With dead ends: 1592 [2020-10-15 00:17:02,379 INFO L226 Difference]: Without dead ends: 1071 [2020-10-15 00:17:02,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:17:02,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2020-10-15 00:17:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 858. [2020-10-15 00:17:02,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 858 states. [2020-10-15 00:17:02,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1124 transitions. [2020-10-15 00:17:02,487 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1124 transitions. Word has length 41 [2020-10-15 00:17:02,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:02,487 INFO L479 AbstractCegarLoop]: Abstraction has 858 states and 1124 transitions. [2020-10-15 00:17:02,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:17:02,488 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1124 transitions. [2020-10-15 00:17:02,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-15 00:17:02,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:02,490 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] [2020-10-15 00:17:02,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 00:17:02,491 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:02,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:02,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1801190041, now seen corresponding path program 1 times [2020-10-15 00:17:02,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:02,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680437424] [2020-10-15 00:17:02,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:02,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:02,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-15 00:17:02,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:02,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-15 00:17:02,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:02,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:02,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:02,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 00:17:02,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:17:02,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:02,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:02,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:02,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:02,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:02,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:02,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:02,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:02,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:02,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:02,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:02,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:02,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:02,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:02,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:02,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:02,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:02,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:02,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:02,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:02,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:02,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:02,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:02,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:02,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:02,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:02,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:02,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:02,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:02,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:02,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:02,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:02,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:02,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:02,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:02,815 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680437424] [2020-10-15 00:17:02,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:02,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-15 00:17:02,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347177194] [2020-10-15 00:17:02,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 00:17:02,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:02,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 00:17:02,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-15 00:17:02,816 INFO L87 Difference]: Start difference. First operand 858 states and 1124 transitions. Second operand 6 states. [2020-10-15 00:17:04,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:04,142 INFO L93 Difference]: Finished difference Result 901 states and 1177 transitions. [2020-10-15 00:17:04,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 00:17:04,143 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-15 00:17:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:04,148 INFO L225 Difference]: With dead ends: 901 [2020-10-15 00:17:04,148 INFO L226 Difference]: Without dead ends: 898 [2020-10-15 00:17:04,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 00:17:04,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2020-10-15 00:17:04,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 869. [2020-10-15 00:17:04,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 869 states. [2020-10-15 00:17:04,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1136 transitions. [2020-10-15 00:17:04,235 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1136 transitions. Word has length 40 [2020-10-15 00:17:04,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:04,236 INFO L479 AbstractCegarLoop]: Abstraction has 869 states and 1136 transitions. [2020-10-15 00:17:04,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 00:17:04,236 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1136 transitions. [2020-10-15 00:17:04,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-15 00:17:04,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:04,237 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] [2020-10-15 00:17:04,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 00:17:04,238 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:04,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:04,238 INFO L82 PathProgramCache]: Analyzing trace with hash -2006089857, now seen corresponding path program 1 times [2020-10-15 00:17:04,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:04,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683470857] [2020-10-15 00:17:04,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:04,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:04,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:04,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-15 00:17:04,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:04,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-15 00:17:04,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:04,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-15 00:17:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:17:04,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:04,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:04,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:04,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:04,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:04,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:04,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:04,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:04,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:04,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:04,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:04,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:04,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:04,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:04,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:04,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:04,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:04,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:04,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:04,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:04,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:04,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:04,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:04,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:04,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:04,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:04,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:04,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:04,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:04,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:04,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:04,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:04,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:04,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:04,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:04,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:04,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:17:04,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 00:17:04,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:04,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-15 00:17:04,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:04,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:17:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:04,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:04,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:04,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:04,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:04,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:04,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:04,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:04,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:17:04,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:04,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683470857] [2020-10-15 00:17:04,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:04,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:17:04,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622276045] [2020-10-15 00:17:04,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:17:04,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:04,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:17:04,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:17:04,567 INFO L87 Difference]: Start difference. First operand 869 states and 1136 transitions. Second operand 8 states. [2020-10-15 00:17:05,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:05,494 INFO L93 Difference]: Finished difference Result 970 states and 1260 transitions. [2020-10-15 00:17:05,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:17:05,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-10-15 00:17:05,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:05,500 INFO L225 Difference]: With dead ends: 970 [2020-10-15 00:17:05,500 INFO L226 Difference]: Without dead ends: 965 [2020-10-15 00:17:05,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:17:05,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2020-10-15 00:17:05,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 914. [2020-10-15 00:17:05,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 914 states. [2020-10-15 00:17:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1190 transitions. [2020-10-15 00:17:05,599 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1190 transitions. Word has length 41 [2020-10-15 00:17:05,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:05,600 INFO L479 AbstractCegarLoop]: Abstraction has 914 states and 1190 transitions. [2020-10-15 00:17:05,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:17:05,600 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1190 transitions. [2020-10-15 00:17:05,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-15 00:17:05,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:05,602 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] [2020-10-15 00:17:05,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:17:05,603 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:05,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:05,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1606408613, now seen corresponding path program 1 times [2020-10-15 00:17:05,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:05,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670932665] [2020-10-15 00:17:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:05,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:05,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:05,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:06,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:06,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 00:17:06,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:06,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-15 00:17:06,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:06,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:17:06,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:06,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:06,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:06,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:06,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:06,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:06,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:06,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:06,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:06,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:06,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:06,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:06,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:06,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:06,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:06,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:06,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:17:06,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:06,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:06,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:06,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:06,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:06,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:06,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:06,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:06,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:06,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:06,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:06,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:06,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:06,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:06,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:06,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:06,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:06,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:17:06,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:06,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-15 00:17:06,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:06,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:17:06,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:06,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:17:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:06,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:06,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:06,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:06,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:06,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:06,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:06,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:06,464 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670932665] [2020-10-15 00:17:06,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:06,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:17:06,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304606231] [2020-10-15 00:17:06,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:17:06,465 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:06,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:17:06,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:17:06,466 INFO L87 Difference]: Start difference. First operand 914 states and 1190 transitions. Second operand 9 states. [2020-10-15 00:17:07,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:07,936 INFO L93 Difference]: Finished difference Result 1295 states and 1713 transitions. [2020-10-15 00:17:07,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:17:07,936 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 42 [2020-10-15 00:17:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:07,944 INFO L225 Difference]: With dead ends: 1295 [2020-10-15 00:17:07,944 INFO L226 Difference]: Without dead ends: 1284 [2020-10-15 00:17:07,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-15 00:17:07,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2020-10-15 00:17:08,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 1047. [2020-10-15 00:17:08,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2020-10-15 00:17:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1367 transitions. [2020-10-15 00:17:08,079 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1367 transitions. Word has length 42 [2020-10-15 00:17:08,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:08,080 INFO L479 AbstractCegarLoop]: Abstraction has 1047 states and 1367 transitions. [2020-10-15 00:17:08,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:17:08,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1367 transitions. [2020-10-15 00:17:08,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-15 00:17:08,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:08,082 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] [2020-10-15 00:17:08,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:17:08,083 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:08,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:08,083 INFO L82 PathProgramCache]: Analyzing trace with hash 851921771, now seen corresponding path program 1 times [2020-10-15 00:17:08,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:08,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1842849559] [2020-10-15 00:17:08,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:08,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:08,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:08,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:08,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:17:08,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:08,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-15 00:17:08,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:08,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:08,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:17:08,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:08,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:08,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:08,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:08,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:08,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:08,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:08,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:08,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:08,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:08,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:08,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:08,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:08,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:08,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:08,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:08,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:08,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:08,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-15 00:17:08,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:08,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:08,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:08,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:08,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:08,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:08,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:08,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:08,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:08,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:08,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:08,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:08,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:08,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:08,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:08,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:08,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:08,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:08,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:08,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:17:08,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:08,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-15 00:17:08,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:08,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:08,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:08,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:17:08,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:08,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:17:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:08,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:08,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:08,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:08,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:08,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:08,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:08,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:08,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:17:08,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:08,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:08,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1842849559] [2020-10-15 00:17:08,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:08,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:17:08,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120216462] [2020-10-15 00:17:08,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:17:08,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:08,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:17:08,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:17:08,857 INFO L87 Difference]: Start difference. First operand 1047 states and 1367 transitions. Second operand 11 states. [2020-10-15 00:17:09,965 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-15 00:17:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:11,000 INFO L93 Difference]: Finished difference Result 1109 states and 1440 transitions. [2020-10-15 00:17:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:17:11,001 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-15 00:17:11,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:11,007 INFO L225 Difference]: With dead ends: 1109 [2020-10-15 00:17:11,007 INFO L226 Difference]: Without dead ends: 1100 [2020-10-15 00:17:11,008 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:17:11,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2020-10-15 00:17:11,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1047. [2020-10-15 00:17:11,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2020-10-15 00:17:11,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1365 transitions. [2020-10-15 00:17:11,104 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1365 transitions. Word has length 43 [2020-10-15 00:17:11,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:11,104 INFO L479 AbstractCegarLoop]: Abstraction has 1047 states and 1365 transitions. [2020-10-15 00:17:11,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:17:11,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1365 transitions. [2020-10-15 00:17:11,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-15 00:17:11,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:11,106 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] [2020-10-15 00:17:11,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 00:17:11,106 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:11,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:11,107 INFO L82 PathProgramCache]: Analyzing trace with hash 694919684, now seen corresponding path program 1 times [2020-10-15 00:17:11,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:11,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1016289369] [2020-10-15 00:17:11,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:11,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:11,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:11,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 00:17:11,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:11,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-15 00:17:11,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:11,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:11,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 00:17:11,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:17:11,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:11,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:11,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:11,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:11,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:11,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:11,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:11,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:11,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:11,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:11,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:11,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:11,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:11,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:11,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:11,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:11,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:11,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:11,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:11,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:11,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:11,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:11,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:11,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:11,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:11,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:11,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:11,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:11,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:11,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:11,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:11,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:11,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:11,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:11,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:11,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:11,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-15 00:17:11,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:11,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 00:17:11,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:11,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:11,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:11,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:11,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-15 00:17:11,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:11,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-15 00:17:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:11,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:11,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:11,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:11,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:11,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:11,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:11,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:11,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:11,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:11,493 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1016289369] [2020-10-15 00:17:11,493 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:11,493 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:17:11,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445289479] [2020-10-15 00:17:11,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:17:11,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:11,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:17:11,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:17:11,495 INFO L87 Difference]: Start difference. First operand 1047 states and 1365 transitions. Second operand 10 states. [2020-10-15 00:17:12,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:12,612 INFO L93 Difference]: Finished difference Result 1110 states and 1440 transitions. [2020-10-15 00:17:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 00:17:12,613 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-15 00:17:12,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:12,619 INFO L225 Difference]: With dead ends: 1110 [2020-10-15 00:17:12,620 INFO L226 Difference]: Without dead ends: 1092 [2020-10-15 00:17:12,621 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:17:12,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2020-10-15 00:17:12,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1045. [2020-10-15 00:17:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1045 states. [2020-10-15 00:17:12,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1361 transitions. [2020-10-15 00:17:12,726 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1361 transitions. Word has length 44 [2020-10-15 00:17:12,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:12,726 INFO L479 AbstractCegarLoop]: Abstraction has 1045 states and 1361 transitions. [2020-10-15 00:17:12,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:17:12,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1361 transitions. [2020-10-15 00:17:12,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 00:17:12,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:12,728 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] [2020-10-15 00:17:12,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 00:17:12,729 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:12,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:12,729 INFO L82 PathProgramCache]: Analyzing trace with hash -357671628, now seen corresponding path program 1 times [2020-10-15 00:17:12,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:12,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121697342] [2020-10-15 00:17:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:12,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:12,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:12,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:14,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:14,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:14,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 00:17:14,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:17:14,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2004 [2020-10-15 00:17:14,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:14,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:14,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:14,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:14,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:17:14,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:14,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:14,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:14,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:14,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:14,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:14,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:14,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:14,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:14,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:14,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:14,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:14,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:14,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:14,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:14,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:14,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:14,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:14,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:14,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:14,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:14,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:14,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:14,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:14,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:14,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:14,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:14,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:14,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:14,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:14,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:14,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:14,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:14,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:17:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:14,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:14,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:14,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:17:14,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:14,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:17:14,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:14,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:17:14,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:14,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121697342] [2020-10-15 00:17:14,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:14,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:17:14,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021908184] [2020-10-15 00:17:14,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:17:14,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:14,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:17:14,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:17:14,998 INFO L87 Difference]: Start difference. First operand 1045 states and 1361 transitions. Second operand 9 states. [2020-10-15 00:17:15,944 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-15 00:17:17,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:17,736 INFO L93 Difference]: Finished difference Result 2266 states and 3039 transitions. [2020-10-15 00:17:17,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:17:17,737 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-10-15 00:17:17,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:17,747 INFO L225 Difference]: With dead ends: 2266 [2020-10-15 00:17:17,747 INFO L226 Difference]: Without dead ends: 1686 [2020-10-15 00:17:17,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=261, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:17:17,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-10-15 00:17:17,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1219. [2020-10-15 00:17:17,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1219 states. [2020-10-15 00:17:17,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1592 transitions. [2020-10-15 00:17:17,874 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1592 transitions. Word has length 49 [2020-10-15 00:17:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:17,876 INFO L479 AbstractCegarLoop]: Abstraction has 1219 states and 1592 transitions. [2020-10-15 00:17:17,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:17:17,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1592 transitions. [2020-10-15 00:17:17,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-15 00:17:17,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:17,878 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] [2020-10-15 00:17:17,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 00:17:17,879 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:17,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:17,879 INFO L82 PathProgramCache]: Analyzing trace with hash 422856019, now seen corresponding path program 1 times [2020-10-15 00:17:17,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:17,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754008113] [2020-10-15 00:17:17,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:17,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:17,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:17,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:17,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:17:17,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:17,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-15 00:17:17,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:17,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:17,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-15 00:17:17,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:17:17,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:18,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:18,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:18,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:18,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:18,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:18,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:18,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:18,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:18,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:18,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:18,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:18,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:18,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:18,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:18,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:18,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:18,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:18,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:18,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:18,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:18,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:18,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:18,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:18,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:18,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:18,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:18,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:18,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:18,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:18,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:18,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:18,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:18,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:18,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:17:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:18,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:18,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:18,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:17:18,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:18,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:18,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:18,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 00:17:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:17:18,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:18,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:18,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754008113] [2020-10-15 00:17:18,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:18,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:17:18,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969893129] [2020-10-15 00:17:18,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:17:18,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:18,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:17:18,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:17:18,168 INFO L87 Difference]: Start difference. First operand 1219 states and 1592 transitions. Second operand 8 states. [2020-10-15 00:17:19,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:19,386 INFO L93 Difference]: Finished difference Result 1356 states and 1731 transitions. [2020-10-15 00:17:19,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:17:19,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-10-15 00:17:19,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:19,391 INFO L225 Difference]: With dead ends: 1356 [2020-10-15 00:17:19,391 INFO L226 Difference]: Without dead ends: 904 [2020-10-15 00:17:19,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:17:19,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-10-15 00:17:19,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 832. [2020-10-15 00:17:19,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 832 states. [2020-10-15 00:17:19,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1045 transitions. [2020-10-15 00:17:19,474 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1045 transitions. Word has length 50 [2020-10-15 00:17:19,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:19,474 INFO L479 AbstractCegarLoop]: Abstraction has 832 states and 1045 transitions. [2020-10-15 00:17:19,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:17:19,475 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1045 transitions. [2020-10-15 00:17:19,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-15 00:17:19,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:19,477 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] [2020-10-15 00:17:19,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 00:17:19,477 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:19,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:19,477 INFO L82 PathProgramCache]: Analyzing trace with hash 2127211001, now seen corresponding path program 1 times [2020-10-15 00:17:19,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:19,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284446960] [2020-10-15 00:17:19,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:19,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:19,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-15 00:17:19,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-15 00:17:19,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:19,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-15 00:17:19,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:17:19,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:19,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:19,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:19,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:19,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:19,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:19,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:19,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:19,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:19,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:19,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:19,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:19,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:19,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:19,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:19,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:19,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:19,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:19,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:19,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:19,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:19,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:19,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:19,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:19,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:19,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:19,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:19,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:19,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:19,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:19,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:19,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:19,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:19,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-15 00:17:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:19,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:19,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:19,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:17:19,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:19,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:19,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:19,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:19,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:19,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:19,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:19,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:19,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:17:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:19,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:19,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:19,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:19,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:19,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:19,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:19,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:19,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-15 00:17:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:19,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:19,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:19,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:19,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:19,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:19,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:19,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:19,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:19,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:19,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:19,856 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284446960] [2020-10-15 00:17:19,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:19,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:17:19,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861039395] [2020-10-15 00:17:19,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:17:19,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:19,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:17:19,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:17:19,858 INFO L87 Difference]: Start difference. First operand 832 states and 1045 transitions. Second operand 8 states. [2020-10-15 00:17:21,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:21,278 INFO L93 Difference]: Finished difference Result 1174 states and 1483 transitions. [2020-10-15 00:17:21,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:17:21,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-15 00:17:21,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:21,285 INFO L225 Difference]: With dead ends: 1174 [2020-10-15 00:17:21,285 INFO L226 Difference]: Without dead ends: 893 [2020-10-15 00:17:21,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:17:21,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-10-15 00:17:21,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 846. [2020-10-15 00:17:21,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-10-15 00:17:21,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1065 transitions. [2020-10-15 00:17:21,365 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1065 transitions. Word has length 58 [2020-10-15 00:17:21,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:21,365 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1065 transitions. [2020-10-15 00:17:21,365 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:17:21,365 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1065 transitions. [2020-10-15 00:17:21,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-15 00:17:21,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:21,367 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] [2020-10-15 00:17:21,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 00:17:21,368 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:21,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:21,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1014789579, now seen corresponding path program 1 times [2020-10-15 00:17:21,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:21,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52725944] [2020-10-15 00:17:21,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:21,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:21,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:21,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:21,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:22,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:22,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-15 00:17:22,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:22,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 767 [2020-10-15 00:17:22,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:22,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:22,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-15 00:17:22,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:22,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:22,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:22,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:22,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:22,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:22,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:22,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:22,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:22,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:22,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:22,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:22,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:22,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:22,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:22,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:22,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:22,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:22,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:22,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:22,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:22,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:22,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:22,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:22,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:22,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:22,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:22,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:22,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:22,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:22,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:22,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:22,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:17:22,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:22,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-15 00:17:22,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:22,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:22,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:17:22,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:22,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:17:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:22,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:22,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:22,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:17:22,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:22,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:17:22,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:22,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:22,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:17:22,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:22,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:22,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52725944] [2020-10-15 00:17:22,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:22,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:17:22,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059122237] [2020-10-15 00:17:22,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:17:22,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:22,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:17:22,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:17:22,485 INFO L87 Difference]: Start difference. First operand 846 states and 1065 transitions. Second operand 12 states. [2020-10-15 00:17:23,501 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-10-15 00:17:24,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:24,311 INFO L93 Difference]: Finished difference Result 1005 states and 1266 transitions. [2020-10-15 00:17:24,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:17:24,311 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-10-15 00:17:24,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:24,316 INFO L225 Difference]: With dead ends: 1005 [2020-10-15 00:17:24,317 INFO L226 Difference]: Without dead ends: 996 [2020-10-15 00:17:24,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:17:24,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2020-10-15 00:17:24,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 846. [2020-10-15 00:17:24,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-10-15 00:17:24,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1063 transitions. [2020-10-15 00:17:24,403 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1063 transitions. Word has length 53 [2020-10-15 00:17:24,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:24,403 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1063 transitions. [2020-10-15 00:17:24,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:17:24,403 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1063 transitions. [2020-10-15 00:17:24,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 00:17:24,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:24,405 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] [2020-10-15 00:17:24,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 00:17:24,406 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:24,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:24,406 INFO L82 PathProgramCache]: Analyzing trace with hash 29740109, now seen corresponding path program 1 times [2020-10-15 00:17:24,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:24,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463617710] [2020-10-15 00:17:24,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-15 00:17:24,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:24,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-15 00:17:24,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-15 00:17:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:24,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:24,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:24,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:24,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:24,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:24,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:24,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:24,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:24,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:24,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:24,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:24,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:24,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:24,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:24,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:24,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:24,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:24,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:24,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:24,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:24,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:24,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:17:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-15 00:17:24,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:24,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-15 00:17:24,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-15 00:17:24,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:24,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:24,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:17:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:17:24,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:24,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 00:17:24,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:24,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:24,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:17:24,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:24,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:17:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:24,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:24,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:24,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:24,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:24,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:24,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:24,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:24,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:24,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:24,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463617710] [2020-10-15 00:17:24,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:24,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:17:24,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356007543] [2020-10-15 00:17:24,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:17:24,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:24,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:17:24,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:17:24,874 INFO L87 Difference]: Start difference. First operand 846 states and 1063 transitions. Second operand 10 states. [2020-10-15 00:17:25,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:25,999 INFO L93 Difference]: Finished difference Result 1170 states and 1474 transitions. [2020-10-15 00:17:25,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-15 00:17:25,999 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2020-10-15 00:17:26,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:26,003 INFO L225 Difference]: With dead ends: 1170 [2020-10-15 00:17:26,003 INFO L226 Difference]: Without dead ends: 875 [2020-10-15 00:17:26,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:17:26,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2020-10-15 00:17:26,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 829. [2020-10-15 00:17:26,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 829 states. [2020-10-15 00:17:26,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1037 transitions. [2020-10-15 00:17:26,090 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1037 transitions. Word has length 61 [2020-10-15 00:17:26,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:26,091 INFO L479 AbstractCegarLoop]: Abstraction has 829 states and 1037 transitions. [2020-10-15 00:17:26,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:17:26,091 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1037 transitions. [2020-10-15 00:17:26,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:17:26,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:26,093 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] [2020-10-15 00:17:26,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-15 00:17:26,093 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:26,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:26,093 INFO L82 PathProgramCache]: Analyzing trace with hash 496105369, now seen corresponding path program 1 times [2020-10-15 00:17:26,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:26,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666002991] [2020-10-15 00:17:26,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:26,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:26,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:26,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:26,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:17:27,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:17:27,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 917 [2020-10-15 00:17:27,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:27,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-15 00:17:27,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:27,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:27,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:27,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:27,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:27,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:27,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:27,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:27,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:27,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:27,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:27,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:27,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:27,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:27,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:27,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:27,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:17:27,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-15 00:17:27,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-15 00:17:27,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:27,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:17:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:27,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:27,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:27,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:17:27,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:27,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:27,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:27,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:27,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:27,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:27,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:27,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:27,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:27,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666002991] [2020-10-15 00:17:27,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:27,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 00:17:27,298 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352878817] [2020-10-15 00:17:27,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 00:17:27,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:27,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 00:17:27,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-15 00:17:27,303 INFO L87 Difference]: Start difference. First operand 829 states and 1037 transitions. Second operand 10 states. [2020-10-15 00:17:29,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:29,366 INFO L93 Difference]: Finished difference Result 968 states and 1210 transitions. [2020-10-15 00:17:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 00:17:29,367 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-15 00:17:29,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:29,371 INFO L225 Difference]: With dead ends: 968 [2020-10-15 00:17:29,371 INFO L226 Difference]: Without dead ends: 964 [2020-10-15 00:17:29,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:17:29,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2020-10-15 00:17:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 826. [2020-10-15 00:17:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2020-10-15 00:17:29,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1032 transitions. [2020-10-15 00:17:29,457 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1032 transitions. Word has length 54 [2020-10-15 00:17:29,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:29,457 INFO L479 AbstractCegarLoop]: Abstraction has 826 states and 1032 transitions. [2020-10-15 00:17:29,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 00:17:29,458 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1032 transitions. [2020-10-15 00:17:29,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:17:29,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:29,459 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] [2020-10-15 00:17:29,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-15 00:17:29,460 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:29,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:29,460 INFO L82 PathProgramCache]: Analyzing trace with hash 496382199, now seen corresponding path program 1 times [2020-10-15 00:17:29,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:29,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172852775] [2020-10-15 00:17:29,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:29,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:29,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:29,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:29,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:29,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:17:29,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:29,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 505 [2020-10-15 00:17:29,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:29,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:29,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-15 00:17:29,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:30,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:30,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:30,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:30,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:30,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:30,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:30,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:30,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:30,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:30,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:30,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:30,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:30,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:30,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:30,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:30,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:30,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:17:30,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:30,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:30,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:30,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:30,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:30,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:30,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:30,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:30,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:30,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:30,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:30,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:30,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:30,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:30,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:30,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-15 00:17:30,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:30,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-15 00:17:30,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:30,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:17:30,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-15 00:17:30,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:30,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:17:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:30,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:30,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:30,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:17:30,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:30,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-15 00:17:30,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:30,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:30,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:30,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:17:30,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:17:30,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:30,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:30,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172852775] [2020-10-15 00:17:30,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:30,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:17:30,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696553070] [2020-10-15 00:17:30,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:17:30,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:30,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:17:30,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:17:30,326 INFO L87 Difference]: Start difference. First operand 826 states and 1032 transitions. Second operand 12 states. [2020-10-15 00:17:30,468 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-15 00:17:32,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:32,302 INFO L93 Difference]: Finished difference Result 1020 states and 1278 transitions. [2020-10-15 00:17:32,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 00:17:32,302 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-15 00:17:32,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:32,307 INFO L225 Difference]: With dead ends: 1020 [2020-10-15 00:17:32,307 INFO L226 Difference]: Without dead ends: 941 [2020-10-15 00:17:32,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=489, Unknown=0, NotChecked=0, Total=650 [2020-10-15 00:17:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2020-10-15 00:17:32,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 756. [2020-10-15 00:17:32,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2020-10-15 00:17:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 942 transitions. [2020-10-15 00:17:32,391 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 942 transitions. Word has length 54 [2020-10-15 00:17:32,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:32,392 INFO L479 AbstractCegarLoop]: Abstraction has 756 states and 942 transitions. [2020-10-15 00:17:32,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:17:32,392 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 942 transitions. [2020-10-15 00:17:32,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:17:32,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:32,396 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] [2020-10-15 00:17:32,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-15 00:17:32,396 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:32,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:32,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1073013810, now seen corresponding path program 1 times [2020-10-15 00:17:32,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:32,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213778683] [2020-10-15 00:17:32,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:32,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:32,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:32,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:17:32,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:32,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-15 00:17:32,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:32,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 00:17:32,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:17:32,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:32,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:32,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:32,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:32,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:32,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:32,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:32,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:32,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:32,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:32,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:32,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:32,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:32,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:32,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:32,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:32,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:32,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:32,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:32,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:32,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:32,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:32,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:32,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:32,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:32,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:32,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:32,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:32,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:32,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:32,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:32,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:32,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:32,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:32,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:32,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:32,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:32,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:17:32,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:32,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-15 00:17:32,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:32,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:32,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:32,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:32,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:17:32,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:32,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:17:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:32,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:32,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:32,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:32,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:32,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:32,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:32,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:32,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-15 00:17:32,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:32,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:32,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213778683] [2020-10-15 00:17:32,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:32,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-15 00:17:32,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888445912] [2020-10-15 00:17:32,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 00:17:32,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:32,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 00:17:32,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-15 00:17:32,727 INFO L87 Difference]: Start difference. First operand 756 states and 942 transitions. Second operand 8 states. [2020-10-15 00:17:33,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:33,593 INFO L93 Difference]: Finished difference Result 822 states and 1019 transitions. [2020-10-15 00:17:33,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 00:17:33,594 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-10-15 00:17:33,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:33,597 INFO L225 Difference]: With dead ends: 822 [2020-10-15 00:17:33,597 INFO L226 Difference]: Without dead ends: 809 [2020-10-15 00:17:33,598 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:17:33,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2020-10-15 00:17:33,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 753. [2020-10-15 00:17:33,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-10-15 00:17:33,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 935 transitions. [2020-10-15 00:17:33,678 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 935 transitions. Word has length 54 [2020-10-15 00:17:33,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:33,679 INFO L479 AbstractCegarLoop]: Abstraction has 753 states and 935 transitions. [2020-10-15 00:17:33,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 00:17:33,679 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 935 transitions. [2020-10-15 00:17:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 00:17:33,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:33,680 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] [2020-10-15 00:17:33,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-15 00:17:33,681 INFO L427 AbstractCegarLoop]: === Iteration 21 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:33,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:33,681 INFO L82 PathProgramCache]: Analyzing trace with hash 929734452, now seen corresponding path program 1 times [2020-10-15 00:17:33,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:33,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40784303] [2020-10-15 00:17:33,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:33,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:33,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:33,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-15 00:17:33,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:33,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-15 00:17:33,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:33,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:33,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:33,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:33,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-15 00:17:33,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:33,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:33,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:33,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:33,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:33,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:33,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:33,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:33,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:33,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:33,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:33,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:33,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:33,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:33,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:17:33,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:33,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:33,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:33,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:34,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:34,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:34,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:34,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:34,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:34,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:34,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:34,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:34,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:34,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:34,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:34,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:34,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:34,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:34,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:34,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:34,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:17:34,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:34,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-15 00:17:34,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:34,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 00:17:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 00:17:34,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:34,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:17:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:34,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:34,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:34,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:34,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-15 00:17:34,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:34,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:17:34,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:17:34,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:34,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40784303] [2020-10-15 00:17:34,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:34,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 00:17:34,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867432132] [2020-10-15 00:17:34,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:17:34,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:34,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:17:34,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:17:34,237 INFO L87 Difference]: Start difference. First operand 753 states and 935 transitions. Second operand 13 states. [2020-10-15 00:17:34,447 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2020-10-15 00:17:36,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:36,346 INFO L93 Difference]: Finished difference Result 814 states and 1008 transitions. [2020-10-15 00:17:36,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:17:36,347 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-15 00:17:36,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:36,350 INFO L225 Difference]: With dead ends: 814 [2020-10-15 00:17:36,350 INFO L226 Difference]: Without dead ends: 706 [2020-10-15 00:17:36,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2020-10-15 00:17:36,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-15 00:17:36,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 659. [2020-10-15 00:17:36,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-10-15 00:17:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 813 transitions. [2020-10-15 00:17:36,467 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 813 transitions. Word has length 54 [2020-10-15 00:17:36,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:36,467 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 813 transitions. [2020-10-15 00:17:36,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:17:36,467 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 813 transitions. [2020-10-15 00:17:36,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-15 00:17:36,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:36,469 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] [2020-10-15 00:17:36,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-15 00:17:36,469 INFO L427 AbstractCegarLoop]: === Iteration 22 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:36,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:36,469 INFO L82 PathProgramCache]: Analyzing trace with hash -643198618, now seen corresponding path program 1 times [2020-10-15 00:17:36,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:36,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495370588] [2020-10-15 00:17:36,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:36,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:36,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:36,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-15 00:17:36,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:36,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-15 00:17:36,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:36,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:36,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:17:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-15 00:17:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:17:36,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:36,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:36,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:36,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:36,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:36,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:36,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:36,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:36,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:36,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:36,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:36,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:36,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:36,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:36,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:36,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:36,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:36,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:36,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:36,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:36,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:36,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:36,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:36,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:36,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:36,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:36,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:36,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:36,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:36,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:36,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:36,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:36,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:36,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:36,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:36,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:36,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:36,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:36,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-15 00:17:36,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:36,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-15 00:17:36,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:36,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:17:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-15 00:17:36,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:36,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:17:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:36,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:36,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:36,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:36,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:36,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:17:36,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:36,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:36,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:17:36,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:36,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495370588] [2020-10-15 00:17:36,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:36,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 00:17:36,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161681929] [2020-10-15 00:17:36,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:17:36,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:36,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:17:36,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:17:36,965 INFO L87 Difference]: Start difference. First operand 659 states and 813 transitions. Second operand 13 states. [2020-10-15 00:17:39,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:39,135 INFO L93 Difference]: Finished difference Result 720 states and 884 transitions. [2020-10-15 00:17:39,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:17:39,136 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-10-15 00:17:39,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:39,141 INFO L225 Difference]: With dead ends: 720 [2020-10-15 00:17:39,141 INFO L226 Difference]: Without dead ends: 702 [2020-10-15 00:17:39,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:17:39,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2020-10-15 00:17:39,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 655. [2020-10-15 00:17:39,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-10-15 00:17:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 807 transitions. [2020-10-15 00:17:39,279 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 807 transitions. Word has length 55 [2020-10-15 00:17:39,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:39,279 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 807 transitions. [2020-10-15 00:17:39,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:17:39,280 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 807 transitions. [2020-10-15 00:17:39,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 00:17:39,283 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:39,284 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] [2020-10-15 00:17:39,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-15 00:17:39,284 INFO L427 AbstractCegarLoop]: === Iteration 23 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:39,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:39,285 INFO L82 PathProgramCache]: Analyzing trace with hash 475410832, now seen corresponding path program 1 times [2020-10-15 00:17:39,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:39,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732698823] [2020-10-15 00:17:39,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:39,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:39,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 00:17:39,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:39,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-15 00:17:39,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:39,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:39,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:39,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-15 00:17:39,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 00:17:39,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:39,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:39,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:39,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:39,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:39,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:17:39,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:39,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:39,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:39,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:39,809 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2020-10-15 00:17:39,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:39,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:39,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:39,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:39,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:39,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:39,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:39,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:39,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:39,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:39,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:39,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:39,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:39,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:39,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:39,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:39,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:39,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:39,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:39,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:39,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:39,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:39,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-15 00:17:39,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:39,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-15 00:17:39,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:39,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:39,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:17:39,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:40,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:17:40,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:40,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:40,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:40,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:40,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:40,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:40,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:40,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:40,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:40,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:40,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:40,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-15 00:17:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:40,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:40,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:40,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:40,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:40,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:40,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:40,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:40,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:40,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:40,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732698823] [2020-10-15 00:17:40,059 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:40,059 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:17:40,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257995066] [2020-10-15 00:17:40,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:17:40,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:40,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:17:40,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:17:40,061 INFO L87 Difference]: Start difference. First operand 655 states and 807 transitions. Second operand 12 states. [2020-10-15 00:17:41,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:41,891 INFO L93 Difference]: Finished difference Result 722 states and 884 transitions. [2020-10-15 00:17:41,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:17:41,892 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-10-15 00:17:41,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:41,896 INFO L225 Difference]: With dead ends: 722 [2020-10-15 00:17:41,896 INFO L226 Difference]: Without dead ends: 691 [2020-10-15 00:17:41,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:17:41,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-10-15 00:17:41,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 642. [2020-10-15 00:17:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-10-15 00:17:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 790 transitions. [2020-10-15 00:17:41,978 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 790 transitions. Word has length 57 [2020-10-15 00:17:41,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:41,978 INFO L479 AbstractCegarLoop]: Abstraction has 642 states and 790 transitions. [2020-10-15 00:17:41,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:17:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 790 transitions. [2020-10-15 00:17:41,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 00:17:41,980 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:41,980 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] [2020-10-15 00:17:41,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-15 00:17:41,980 INFO L427 AbstractCegarLoop]: === Iteration 24 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:41,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:41,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1066747129, now seen corresponding path program 1 times [2020-10-15 00:17:41,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:41,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713355729] [2020-10-15 00:17:41,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:42,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:42,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:42,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:42,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:42,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:42,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:42,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:42,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-15 00:17:42,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-15 00:17:42,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 850 [2020-10-15 00:17:42,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:42,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:42,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:42,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:42,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-15 00:17:42,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:42,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:42,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:42,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:42,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:42,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:42,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:42,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:42,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:42,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:42,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:42,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:42,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:42,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:43,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:43,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:43,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:43,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:43,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:43,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:43,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:43,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:17:43,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:43,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-15 00:17:43,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:43,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:17:43,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:17:43,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 00:17:43,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:43,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:43,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:43,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:43,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:43,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:43,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:43,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:43,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:43,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:43,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:43,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-15 00:17:43,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:43,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:43,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713355729] [2020-10-15 00:17:43,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:43,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-15 00:17:43,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428873656] [2020-10-15 00:17:43,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 00:17:43,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:43,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 00:17:43,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:17:43,266 INFO L87 Difference]: Start difference. First operand 642 states and 790 transitions. Second operand 13 states. [2020-10-15 00:17:44,738 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-10-15 00:17:45,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:45,426 INFO L93 Difference]: Finished difference Result 698 states and 855 transitions. [2020-10-15 00:17:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:17:45,427 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-15 00:17:45,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:45,430 INFO L225 Difference]: With dead ends: 698 [2020-10-15 00:17:45,430 INFO L226 Difference]: Without dead ends: 693 [2020-10-15 00:17:45,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:17:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-10-15 00:17:45,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 642. [2020-10-15 00:17:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-10-15 00:17:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 789 transitions. [2020-10-15 00:17:45,506 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 789 transitions. Word has length 57 [2020-10-15 00:17:45,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:45,507 INFO L479 AbstractCegarLoop]: Abstraction has 642 states and 789 transitions. [2020-10-15 00:17:45,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 00:17:45,507 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 789 transitions. [2020-10-15 00:17:45,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 00:17:45,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:45,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:45,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-15 00:17:45,509 INFO L427 AbstractCegarLoop]: === Iteration 25 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:45,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:45,509 INFO L82 PathProgramCache]: Analyzing trace with hash -119702348, now seen corresponding path program 1 times [2020-10-15 00:17:45,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:45,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192718657] [2020-10-15 00:17:45,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:45,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:45,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:45,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-15 00:17:45,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:45,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-15 00:17:45,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:45,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:45,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:45,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:17:45,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 00:17:45,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:45,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:45,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:45,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:45,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:45,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:45,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:45,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:45,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:45,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:45,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:45,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:45,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:45,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:45,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:45,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:45,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:45,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:45,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:45,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:45,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:45,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:45,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:45,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:45,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:45,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:45,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:45,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:45,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:45,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:45,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:45,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:45,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:45,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:45,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:45,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:17:45,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:45,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:45,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:45,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-15 00:17:45,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:45,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 00:17:45,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:45,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:45,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:45,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-15 00:17:45,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:17:45,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:45,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:17:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:45,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:45,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:45,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:17:45,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:45,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:45,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:45,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:45,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:45,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:45,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:45,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:17:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:45,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:45,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:45,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:45,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:45,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:45,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:45,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:45,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:45,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:17:45,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:45,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:45,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:45,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:45,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:45,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:45,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:45,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:45,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:45,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:45,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:45,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:45,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192718657] [2020-10-15 00:17:45,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:45,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:17:45,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366538652] [2020-10-15 00:17:45,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:17:45,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:45,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:17:45,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:17:45,935 INFO L87 Difference]: Start difference. First operand 642 states and 789 transitions. Second operand 11 states. [2020-10-15 00:17:47,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:47,576 INFO L93 Difference]: Finished difference Result 945 states and 1164 transitions. [2020-10-15 00:17:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-15 00:17:47,577 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-15 00:17:47,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:47,581 INFO L225 Difference]: With dead ends: 945 [2020-10-15 00:17:47,581 INFO L226 Difference]: Without dead ends: 667 [2020-10-15 00:17:47,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2020-10-15 00:17:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2020-10-15 00:17:47,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 614. [2020-10-15 00:17:47,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2020-10-15 00:17:47,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 744 transitions. [2020-10-15 00:17:47,662 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 744 transitions. Word has length 65 [2020-10-15 00:17:47,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:47,662 INFO L479 AbstractCegarLoop]: Abstraction has 614 states and 744 transitions. [2020-10-15 00:17:47,662 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:17:47,663 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 744 transitions. [2020-10-15 00:17:47,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-15 00:17:47,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:47,664 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] [2020-10-15 00:17:47,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-15 00:17:47,664 INFO L427 AbstractCegarLoop]: === Iteration 26 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:47,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:47,665 INFO L82 PathProgramCache]: Analyzing trace with hash 2029598960, now seen corresponding path program 1 times [2020-10-15 00:17:47,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:47,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530406101] [2020-10-15 00:17:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:47,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:47,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:47,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:47,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:47,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:48,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 00:17:48,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:17:48,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-15 00:17:48,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:48,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-15 00:17:48,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-15 00:17:48,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:48,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:48,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:48,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:48,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:48,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:48,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:48,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:48,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:48,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:48,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:48,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:48,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:48,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:48,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:48,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:48,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:48,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:48,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:48,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:48,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:48,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:48,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:48,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:48,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:48,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:48,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:48,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:48,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:48,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:48,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:48,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:48,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:48,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:48,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:17:48,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:48,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-15 00:17:48,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:48,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:48,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:48,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-15 00:17:48,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:48,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:17:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:48,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:48,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 00:17:48,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:48,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:17:48,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:48,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:48,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:48,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:48,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:48,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:48,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:48,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:48,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:48,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:48,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:48,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:48,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:48,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:48,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:48,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:48,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530406101] [2020-10-15 00:17:48,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:48,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:17:48,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994682062] [2020-10-15 00:17:48,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:17:48,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:48,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:17:48,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:17:48,418 INFO L87 Difference]: Start difference. First operand 614 states and 744 transitions. Second operand 9 states. [2020-10-15 00:17:49,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:49,590 INFO L93 Difference]: Finished difference Result 684 states and 826 transitions. [2020-10-15 00:17:49,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:17:49,591 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 59 [2020-10-15 00:17:49,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:49,594 INFO L225 Difference]: With dead ends: 684 [2020-10-15 00:17:49,594 INFO L226 Difference]: Without dead ends: 663 [2020-10-15 00:17:49,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:17:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2020-10-15 00:17:49,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 613. [2020-10-15 00:17:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 613 states. [2020-10-15 00:17:49,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 738 transitions. [2020-10-15 00:17:49,656 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 738 transitions. Word has length 59 [2020-10-15 00:17:49,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:49,656 INFO L479 AbstractCegarLoop]: Abstraction has 613 states and 738 transitions. [2020-10-15 00:17:49,656 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:17:49,656 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 738 transitions. [2020-10-15 00:17:49,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 00:17:49,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:49,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:49,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-15 00:17:49,658 INFO L427 AbstractCegarLoop]: === Iteration 27 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:49,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:49,659 INFO L82 PathProgramCache]: Analyzing trace with hash 629978639, now seen corresponding path program 1 times [2020-10-15 00:17:49,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:49,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563823452] [2020-10-15 00:17:49,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:49,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:49,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:49,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:49,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 00:17:49,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:49,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-15 00:17:49,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:49,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:49,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:17:49,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-15 00:17:49,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:49,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:49,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:49,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:50,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:17:50,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:50,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:50,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:50,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:50,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:50,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:50,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:50,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:50,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:17:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:17:50,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:50,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-15 00:17:50,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:17:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:17:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:17:50,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:50,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:50,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:17:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:50,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:50,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:50,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:50,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:17:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:50,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:50,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:50,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:50,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:50,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:50,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:50,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:50,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:50,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:50,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563823452] [2020-10-15 00:17:50,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:50,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:17:50,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696563156] [2020-10-15 00:17:50,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:17:50,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:50,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:17:50,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:17:50,262 INFO L87 Difference]: Start difference. First operand 613 states and 738 transitions. Second operand 12 states. [2020-10-15 00:17:52,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:52,206 INFO L93 Difference]: Finished difference Result 923 states and 1123 transitions. [2020-10-15 00:17:52,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 00:17:52,212 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 67 [2020-10-15 00:17:52,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:52,215 INFO L225 Difference]: With dead ends: 923 [2020-10-15 00:17:52,215 INFO L226 Difference]: Without dead ends: 700 [2020-10-15 00:17:52,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:17:52,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-10-15 00:17:52,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 616. [2020-10-15 00:17:52,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 616 states. [2020-10-15 00:17:52,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 740 transitions. [2020-10-15 00:17:52,298 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 740 transitions. Word has length 67 [2020-10-15 00:17:52,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:52,299 INFO L479 AbstractCegarLoop]: Abstraction has 616 states and 740 transitions. [2020-10-15 00:17:52,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:17:52,299 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 740 transitions. [2020-10-15 00:17:52,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 00:17:52,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:52,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:52,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-15 00:17:52,301 INFO L427 AbstractCegarLoop]: === Iteration 28 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:52,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:52,301 INFO L82 PathProgramCache]: Analyzing trace with hash -795076974, now seen corresponding path program 1 times [2020-10-15 00:17:52,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:52,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115832923] [2020-10-15 00:17:52,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:52,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:52,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:52,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:52,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-15 00:17:52,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:52,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-15 00:17:52,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:52,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:52,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:52,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-15 00:17:52,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:52,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:52,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:52,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:52,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:52,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:52,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:52,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:52,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:52,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:52,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:52,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:52,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:52,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:52,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:52,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:52,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:52,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:52,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:52,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:17:52,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:52,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:52,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:52,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:52,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:52,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:52,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:52,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:52,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:52,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:52,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:52,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:52,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:52,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:52,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:52,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:52,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:52,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:52,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:52,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:17:52,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:52,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 00:17:52,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:52,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:52,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-15 00:17:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:52,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:17:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:52,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:52,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:52,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-15 00:17:52,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:52,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-15 00:17:52,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:52,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:52,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 00:17:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:52,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 00:17:52,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:52,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:52,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:52,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:52,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:52,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:17:52,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:52,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:52,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:52,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:52,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:52,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 00:17:52,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:52,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:52,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:52,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115832923] [2020-10-15 00:17:52,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:52,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:17:52,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832933492] [2020-10-15 00:17:52,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:17:52,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:52,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:17:52,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:17:52,833 INFO L87 Difference]: Start difference. First operand 616 states and 740 transitions. Second operand 11 states. [2020-10-15 00:17:54,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:54,386 INFO L93 Difference]: Finished difference Result 673 states and 807 transitions. [2020-10-15 00:17:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:17:54,386 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 61 [2020-10-15 00:17:54,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:54,390 INFO L225 Difference]: With dead ends: 673 [2020-10-15 00:17:54,390 INFO L226 Difference]: Without dead ends: 641 [2020-10-15 00:17:54,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:17:54,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2020-10-15 00:17:54,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 589. [2020-10-15 00:17:54,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2020-10-15 00:17:54,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 710 transitions. [2020-10-15 00:17:54,464 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 710 transitions. Word has length 61 [2020-10-15 00:17:54,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:54,465 INFO L479 AbstractCegarLoop]: Abstraction has 589 states and 710 transitions. [2020-10-15 00:17:54,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:17:54,465 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 710 transitions. [2020-10-15 00:17:54,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-15 00:17:54,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:54,466 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] [2020-10-15 00:17:54,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-15 00:17:54,467 INFO L427 AbstractCegarLoop]: === Iteration 29 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:54,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:54,467 INFO L82 PathProgramCache]: Analyzing trace with hash -718007398, now seen corresponding path program 1 times [2020-10-15 00:17:54,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:54,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777365816] [2020-10-15 00:17:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:54,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:54,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:54,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-15 00:17:54,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:54,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-15 00:17:54,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:54,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:17:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-15 00:17:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:17:54,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:54,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:54,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:54,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:54,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:54,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:54,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:54,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:54,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:54,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:54,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:54,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:54,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:54,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:54,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:54,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:54,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:54,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 00:17:54,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:54,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:54,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:54,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:54,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:54,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:54,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:54,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:54,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:54,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:54,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:54,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:54,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:54,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:54,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:54,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:54,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:54,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:54,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:17:54,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:54,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-15 00:17:54,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:54,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:54,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:17:54,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:54,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:17:54,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:54,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:54,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:54,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:54,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:54,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:54,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:17:54,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:54,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:54,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:54,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:17:54,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:55,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:55,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777365816] [2020-10-15 00:17:55,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:55,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:17:55,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766031341] [2020-10-15 00:17:55,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:17:55,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:55,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:17:55,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:17:55,068 INFO L87 Difference]: Start difference. First operand 589 states and 710 transitions. Second operand 14 states. [2020-10-15 00:17:56,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:56,761 INFO L93 Difference]: Finished difference Result 653 states and 784 transitions. [2020-10-15 00:17:56,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:17:56,763 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-10-15 00:17:56,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:56,766 INFO L225 Difference]: With dead ends: 653 [2020-10-15 00:17:56,766 INFO L226 Difference]: Without dead ends: 632 [2020-10-15 00:17:56,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:17:56,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2020-10-15 00:17:56,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 585. [2020-10-15 00:17:56,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-10-15 00:17:56,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 704 transitions. [2020-10-15 00:17:56,817 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 704 transitions. Word has length 60 [2020-10-15 00:17:56,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:56,817 INFO L479 AbstractCegarLoop]: Abstraction has 585 states and 704 transitions. [2020-10-15 00:17:56,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:17:56,818 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 704 transitions. [2020-10-15 00:17:56,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-15 00:17:56,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:56,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:17:56,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-15 00:17:56,820 INFO L427 AbstractCegarLoop]: === Iteration 30 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:56,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:56,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1731151643, now seen corresponding path program 1 times [2020-10-15 00:17:56,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:56,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085267589] [2020-10-15 00:17:56,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:56,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:56,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:56,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:57,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:57,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 00:17:57,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:17:57,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-10-15 00:17:57,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:57,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:57,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:57,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-15 00:17:57,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:17:57,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:57,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:57,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:57,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:57,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:57,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:57,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:57,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:57,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:57,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:57,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:57,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:57,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:57,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:57,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:57,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:57,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:57,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:57,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:57,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:57,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:57,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:57,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:57,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:57,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:57,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:57,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:57,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:57,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:57,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:57,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:57,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:57,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:57,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:57,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:17:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:57,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:57,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:57,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:57,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:17:57,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:17:57,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-15 00:17:57,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:57,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:57,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:57,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:57,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:17:57,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:57,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:17:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:57,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:57,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:57,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:17:57,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:57,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:57,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:57,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:57,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:17:57,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:57,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:17:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:57,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:57,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:57,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:57,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:57,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:57,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:57,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:57,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:57,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:57,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:17:57,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:57,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:17:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:57,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:57,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:57,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:57,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:57,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:17:57,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:57,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:17:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:57,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 00:17:57,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:57,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085267589] [2020-10-15 00:17:57,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:57,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 00:17:57,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311590608] [2020-10-15 00:17:57,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 00:17:57,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:57,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 00:17:57,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-15 00:17:57,524 INFO L87 Difference]: Start difference. First operand 585 states and 704 transitions. Second operand 9 states. [2020-10-15 00:17:58,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:17:58,646 INFO L93 Difference]: Finished difference Result 1029 states and 1255 transitions. [2020-10-15 00:17:58,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-15 00:17:58,647 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-10-15 00:17:58,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:17:58,650 INFO L225 Difference]: With dead ends: 1029 [2020-10-15 00:17:58,651 INFO L226 Difference]: Without dead ends: 776 [2020-10-15 00:17:58,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-15 00:17:58,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-10-15 00:17:58,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 706. [2020-10-15 00:17:58,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-15 00:17:58,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 853 transitions. [2020-10-15 00:17:58,722 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 853 transitions. Word has length 69 [2020-10-15 00:17:58,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:17:58,722 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 853 transitions. [2020-10-15 00:17:58,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 00:17:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 853 transitions. [2020-10-15 00:17:58,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 00:17:58,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:17:58,724 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] [2020-10-15 00:17:58,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-15 00:17:58,725 INFO L427 AbstractCegarLoop]: === Iteration 31 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:17:58,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:17:58,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1378187680, now seen corresponding path program 1 times [2020-10-15 00:17:58,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:17:58,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1111598464] [2020-10-15 00:17:58,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:17:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:58,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:58,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:58,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 00:17:58,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:58,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-15 00:17:58,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:58,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:17:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-15 00:17:58,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:17:58,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:59,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:17:59,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:59,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:17:59,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:59,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:59,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:59,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:59,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:17:59,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:59,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:17:59,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:59,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:59,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:59,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:59,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:17:59,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:17:59,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:17:59,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:17:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:17:59,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:59,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:17:59,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:17:59,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-15 00:17:59,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:17:59,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:59,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:17:59,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:17:59,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:17:59,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:17:59,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:17:59,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:17:59,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:17:59,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:17:59,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:17:59,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:17:59,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:17:59,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:17:59,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:17:59,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:17:59,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:17:59,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:17:59,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1111598464] [2020-10-15 00:17:59,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:17:59,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:17:59,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787133852] [2020-10-15 00:17:59,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:17:59,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:17:59,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:17:59,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:17:59,311 INFO L87 Difference]: Start difference. First operand 706 states and 853 transitions. Second operand 14 states. [2020-10-15 00:18:00,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:00,957 INFO L93 Difference]: Finished difference Result 770 states and 928 transitions. [2020-10-15 00:18:00,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:18:00,958 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-10-15 00:18:00,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:00,961 INFO L225 Difference]: With dead ends: 770 [2020-10-15 00:18:00,961 INFO L226 Difference]: Without dead ends: 748 [2020-10-15 00:18:00,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:18:00,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-10-15 00:18:01,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 701. [2020-10-15 00:18:01,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-10-15 00:18:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 846 transitions. [2020-10-15 00:18:01,039 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 846 transitions. Word has length 61 [2020-10-15 00:18:01,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:01,039 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 846 transitions. [2020-10-15 00:18:01,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:18:01,039 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 846 transitions. [2020-10-15 00:18:01,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 00:18:01,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:01,040 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] [2020-10-15 00:18:01,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-15 00:18:01,041 INFO L427 AbstractCegarLoop]: === Iteration 32 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:01,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:01,041 INFO L82 PathProgramCache]: Analyzing trace with hash 448076210, now seen corresponding path program 1 times [2020-10-15 00:18:01,041 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:01,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428032704] [2020-10-15 00:18:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:01,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:01,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-15 00:18:01,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:01,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-15 00:18:01,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:01,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-15 00:18:01,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:18:01,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:01,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:01,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:01,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:01,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:01,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:01,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:01,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:01,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:01,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:01,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:01,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:01,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:01,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:01,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:01,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:01,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:01,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:01,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:01,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:01,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:01,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:01,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:01,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:01,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:01,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:01,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:01,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:01,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:01,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:01,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:01,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:01,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 00:18:01,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:01,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-15 00:18:01,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:01,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:01,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-15 00:18:01,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:01,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:18:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:01,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:01,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:01,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:18:01,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:01,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:18:01,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:01,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:01,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:18:01,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:01,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428032704] [2020-10-15 00:18:01,531 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:01,531 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:18:01,531 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060927067] [2020-10-15 00:18:01,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:18:01,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:01,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:18:01,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:18:01,532 INFO L87 Difference]: Start difference. First operand 701 states and 846 transitions. Second operand 14 states. [2020-10-15 00:18:03,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:03,168 INFO L93 Difference]: Finished difference Result 765 states and 921 transitions. [2020-10-15 00:18:03,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:18:03,169 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 61 [2020-10-15 00:18:03,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:03,173 INFO L225 Difference]: With dead ends: 765 [2020-10-15 00:18:03,173 INFO L226 Difference]: Without dead ends: 744 [2020-10-15 00:18:03,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:18:03,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2020-10-15 00:18:03,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 697. [2020-10-15 00:18:03,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-15 00:18:03,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 840 transitions. [2020-10-15 00:18:03,255 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 840 transitions. Word has length 61 [2020-10-15 00:18:03,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:03,255 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 840 transitions. [2020-10-15 00:18:03,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:18:03,256 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 840 transitions. [2020-10-15 00:18:03,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-15 00:18:03,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:03,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:03,257 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-15 00:18:03,257 INFO L427 AbstractCegarLoop]: === Iteration 33 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:03,258 INFO L82 PathProgramCache]: Analyzing trace with hash -2008782879, now seen corresponding path program 1 times [2020-10-15 00:18:03,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:03,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1525581394] [2020-10-15 00:18:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:03,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:03,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:03,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-15 00:18:03,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:03,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-15 00:18:03,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:03,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-15 00:18:03,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 00:18:03,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:03,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:03,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:03,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:03,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:03,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:03,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:18:03,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:03,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:03,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:03,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:03,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:03,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:03,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:03,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:03,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:03,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:03,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:03,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:03,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:03,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:03,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:03,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:03,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:03,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:03,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:03,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:03,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:03,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:03,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:03,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:03,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:03,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-15 00:18:03,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:03,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-15 00:18:03,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:03,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:03,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-15 00:18:03,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:03,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-15 00:18:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:03,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:03,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:03,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:18:03,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:03,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:18:03,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:03,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:03,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:03,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:03,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:18:03,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:03,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1525581394] [2020-10-15 00:18:03,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:03,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:18:03,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830745514] [2020-10-15 00:18:03,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:18:03,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:03,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:18:03,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:18:03,766 INFO L87 Difference]: Start difference. First operand 697 states and 840 transitions. Second operand 14 states. [2020-10-15 00:18:05,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:05,410 INFO L93 Difference]: Finished difference Result 761 states and 915 transitions. [2020-10-15 00:18:05,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-15 00:18:05,411 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 65 [2020-10-15 00:18:05,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:05,414 INFO L225 Difference]: With dead ends: 761 [2020-10-15 00:18:05,415 INFO L226 Difference]: Without dead ends: 718 [2020-10-15 00:18:05,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:18:05,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-10-15 00:18:05,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 671. [2020-10-15 00:18:05,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-15 00:18:05,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 808 transitions. [2020-10-15 00:18:05,476 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 808 transitions. Word has length 65 [2020-10-15 00:18:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:05,476 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 808 transitions. [2020-10-15 00:18:05,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:18:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 808 transitions. [2020-10-15 00:18:05,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 00:18:05,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:05,478 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:05,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-15 00:18:05,478 INFO L427 AbstractCegarLoop]: === Iteration 34 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:05,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:05,478 INFO L82 PathProgramCache]: Analyzing trace with hash -511620335, now seen corresponding path program 1 times [2020-10-15 00:18:05,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:05,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849929302] [2020-10-15 00:18:05,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:05,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:05,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 00:18:05,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 00:18:05,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-15 00:18:05,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:05,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:05,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:05,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-15 00:18:05,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-15 00:18:05,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:05,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:05,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:05,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:05,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:05,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:05,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:05,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:05,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:05,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:05,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:05,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:06,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:06,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:06,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:06,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:06,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:06,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:06,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:06,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:06,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:06,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:06,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:06,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:06,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:06,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:06,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:06,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:06,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:06,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:06,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:06,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 00:18:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:06,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:06,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:18:06,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-15 00:18:06,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:06,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:06,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:06,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:06,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:18:06,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:06,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:06,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:06,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:18:06,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:06,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:06,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:06,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:06,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:06,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:18:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:06,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:06,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:06,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:06,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:18:06,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:06,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:06,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:06,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:06,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:06,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:18:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:06,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:06,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:06,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:06,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:06,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:06,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:06,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:06,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:06,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:06,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:06,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-15 00:18:06,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:06,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:06,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:06,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:18:06,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:06,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-15 00:18:06,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:06,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:06,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:06,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:18:06,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-15 00:18:06,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:06,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:06,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849929302] [2020-10-15 00:18:06,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:06,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-15 00:18:06,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211739806] [2020-10-15 00:18:06,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-15 00:18:06,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:06,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-15 00:18:06,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-15 00:18:06,137 INFO L87 Difference]: Start difference. First operand 671 states and 808 transitions. Second operand 11 states. [2020-10-15 00:18:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:07,362 INFO L93 Difference]: Finished difference Result 1023 states and 1241 transitions. [2020-10-15 00:18:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 00:18:07,362 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-10-15 00:18:07,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:07,366 INFO L225 Difference]: With dead ends: 1023 [2020-10-15 00:18:07,367 INFO L226 Difference]: Without dead ends: 706 [2020-10-15 00:18:07,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:18:07,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-15 00:18:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 653. [2020-10-15 00:18:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 653 states. [2020-10-15 00:18:07,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 778 transitions. [2020-10-15 00:18:07,429 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 778 transitions. Word has length 78 [2020-10-15 00:18:07,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:07,430 INFO L479 AbstractCegarLoop]: Abstraction has 653 states and 778 transitions. [2020-10-15 00:18:07,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-15 00:18:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 778 transitions. [2020-10-15 00:18:07,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-15 00:18:07,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:07,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:07,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-15 00:18:07,431 INFO L427 AbstractCegarLoop]: === Iteration 35 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:07,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:07,431 INFO L82 PathProgramCache]: Analyzing trace with hash 351199929, now seen corresponding path program 1 times [2020-10-15 00:18:07,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:07,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185907553] [2020-10-15 00:18:07,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 00:18:07,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:07,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-15 00:18:07,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-15 00:18:07,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:07,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:07,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:07,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:07,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:07,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:07,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:07,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:07,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:07,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:07,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:18:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:18:07,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 00:18:07,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-15 00:18:07,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:18:07,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:07,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:07,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:07,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:18:07,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:07,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:18:07,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:18:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:07,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:07,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:07,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-15 00:18:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-15 00:18:07,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:07,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 00:18:07,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:07,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:18:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:07,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:07,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:07,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 00:18:07,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:07,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:07,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:07,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:07,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:07,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:07,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:07,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:07,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185907553] [2020-10-15 00:18:07,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:07,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:18:07,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133776684] [2020-10-15 00:18:07,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:18:07,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:07,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:18:07,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:18:07,966 INFO L87 Difference]: Start difference. First operand 653 states and 778 transitions. Second operand 14 states. [2020-10-15 00:18:09,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:09,287 INFO L93 Difference]: Finished difference Result 1058 states and 1301 transitions. [2020-10-15 00:18:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 00:18:09,287 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 79 [2020-10-15 00:18:09,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:09,291 INFO L225 Difference]: With dead ends: 1058 [2020-10-15 00:18:09,292 INFO L226 Difference]: Without dead ends: 804 [2020-10-15 00:18:09,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2020-10-15 00:18:09,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2020-10-15 00:18:09,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 617. [2020-10-15 00:18:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2020-10-15 00:18:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 732 transitions. [2020-10-15 00:18:09,370 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 732 transitions. Word has length 79 [2020-10-15 00:18:09,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:09,370 INFO L479 AbstractCegarLoop]: Abstraction has 617 states and 732 transitions. [2020-10-15 00:18:09,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:18:09,370 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 732 transitions. [2020-10-15 00:18:09,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-15 00:18:09,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:09,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:09,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-15 00:18:09,372 INFO L427 AbstractCegarLoop]: === Iteration 36 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:09,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:09,372 INFO L82 PathProgramCache]: Analyzing trace with hash -1758083560, now seen corresponding path program 1 times [2020-10-15 00:18:09,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:09,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74015850] [2020-10-15 00:18:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:09,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:09,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:09,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-15 00:18:11,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:11,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1836 [2020-10-15 00:18:11,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:11,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-15 00:18:11,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-15 00:18:11,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:11,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:11,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:11,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:11,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:11,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:11,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:11,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:11,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:11,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:11,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:11,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:11,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:11,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:11,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:11,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:11,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:11,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:11,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 00:18:11,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:11,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:11,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-15 00:18:11,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:11,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-15 00:18:11,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 00:18:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:18:11,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-15 00:18:11,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:11,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:18:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:11,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:11,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:18:11,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:11,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:11,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:11,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:11,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-15 00:18:11,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-15 00:18:11,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:11,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:18:11,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 00:18:11,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:18:11,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:11,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-15 00:18:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:11,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:11,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:11,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:18:11,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:11,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 00:18:11,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:11,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-15 00:18:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:11,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:11,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74015850] [2020-10-15 00:18:11,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:11,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-15 00:18:11,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174361346] [2020-10-15 00:18:11,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-15 00:18:11,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:11,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-15 00:18:11,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-15 00:18:11,780 INFO L87 Difference]: Start difference. First operand 617 states and 732 transitions. Second operand 12 states. [2020-10-15 00:18:13,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:13,297 INFO L93 Difference]: Finished difference Result 1169 states and 1370 transitions. [2020-10-15 00:18:13,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:18:13,298 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 77 [2020-10-15 00:18:13,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:13,302 INFO L225 Difference]: With dead ends: 1169 [2020-10-15 00:18:13,302 INFO L226 Difference]: Without dead ends: 769 [2020-10-15 00:18:13,303 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:18:13,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2020-10-15 00:18:13,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 738. [2020-10-15 00:18:13,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-10-15 00:18:13,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 864 transitions. [2020-10-15 00:18:13,373 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 864 transitions. Word has length 77 [2020-10-15 00:18:13,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:13,373 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 864 transitions. [2020-10-15 00:18:13,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-15 00:18:13,373 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 864 transitions. [2020-10-15 00:18:13,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-15 00:18:13,374 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:13,375 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:13,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-15 00:18:13,375 INFO L427 AbstractCegarLoop]: === Iteration 37 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:13,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:13,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1922250088, now seen corresponding path program 1 times [2020-10-15 00:18:13,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:13,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744335983] [2020-10-15 00:18:13,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:13,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-15 00:18:13,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:13,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 390 [2020-10-15 00:18:13,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:13,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:13,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-15 00:18:13,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-15 00:18:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:13,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:13,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:13,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:13,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:13,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:13,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:13,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:13,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:13,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:13,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:13,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:13,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:13,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:13,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:13,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:13,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:13,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:13,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:13,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:13,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:13,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:13,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:13,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:13,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:13,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:13,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:13,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:13,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:13,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:13,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:13,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:13,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:13,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:13,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:13,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:14,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:14,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:18:14,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 00:18:14,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-15 00:18:14,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:14,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:14,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 00:18:14,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:14,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 00:18:14,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:14,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-15 00:18:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:14,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:14,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:14,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:14,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:14,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:14,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:14,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:14,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:14,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:14,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-15 00:18:14,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:14,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:14,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:14,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-15 00:18:14,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:14,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:14,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:14,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:14,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:14,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:14,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 00:18:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:14,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:14,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:14,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-15 00:18:14,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 00:18:14,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:14,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 00:18:14,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:14,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-15 00:18:14,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:18:14,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:14,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744335983] [2020-10-15 00:18:14,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:14,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-15 00:18:14,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271184636] [2020-10-15 00:18:14,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-15 00:18:14,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:14,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-15 00:18:14,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-10-15 00:18:14,227 INFO L87 Difference]: Start difference. First operand 738 states and 864 transitions. Second operand 16 states. [2020-10-15 00:18:16,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:16,030 INFO L93 Difference]: Finished difference Result 743 states and 868 transitions. [2020-10-15 00:18:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:18:16,031 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 78 [2020-10-15 00:18:16,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:16,033 INFO L225 Difference]: With dead ends: 743 [2020-10-15 00:18:16,033 INFO L226 Difference]: Without dead ends: 649 [2020-10-15 00:18:16,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2020-10-15 00:18:16,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-10-15 00:18:16,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 646. [2020-10-15 00:18:16,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-10-15 00:18:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 757 transitions. [2020-10-15 00:18:16,087 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 757 transitions. Word has length 78 [2020-10-15 00:18:16,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:16,087 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 757 transitions. [2020-10-15 00:18:16,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-15 00:18:16,087 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 757 transitions. [2020-10-15 00:18:16,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-15 00:18:16,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:16,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:16,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-15 00:18:16,089 INFO L427 AbstractCegarLoop]: === Iteration 38 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:16,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:16,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1578123954, now seen corresponding path program 1 times [2020-10-15 00:18:16,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:16,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613690863] [2020-10-15 00:18:16,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:16,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:16,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:16,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:16,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:16,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-15 00:18:16,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:16,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-15 00:18:16,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:16,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:16,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 00:18:16,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-15 00:18:16,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-15 00:18:16,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:16,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:18:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:16,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:16,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:16,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:16,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:16,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 00:18:16,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:16,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:16,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:16,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:16,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:16,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:16,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 00:18:16,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:16,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:16,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:16,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:16,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:16,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:16,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:16,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:16,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 00:18:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:16,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:16,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:16,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:16,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:16,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:16,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:16,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:16,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:16,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:16,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:16,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:18:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:16,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:16,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:17,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:17,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-15 00:18:17,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 00:18:17,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-15 00:18:17,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:17,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:17,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:18:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:17,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 00:18:17,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:17,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:18:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:17,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:17,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-15 00:18:17,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:17,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:18:17,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:17,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:17,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:17,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:17,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-15 00:18:17,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:17,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:17,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:17,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-15 00:18:17,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:17,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:17,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:17,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:17,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:17,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:17,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:17,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-15 00:18:17,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:17,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:17,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:17,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:17,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:17,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:18:17,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:17,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:17,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:17,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:17,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:18:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:17,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:17,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:17,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:18:17,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:17,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 00:18:17,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:17,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:17,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:18:17,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:17,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:18:17,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:17,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-15 00:18:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:18:17,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:18:17,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:18:17,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:18:17,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:18:17,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:18:17,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:18:17,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:18:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:18:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:18:17,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:18:17,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:18:17,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 00:18:17,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613690863] [2020-10-15 00:18:17,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:18:17,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-15 00:18:17,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869585051] [2020-10-15 00:18:17,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 00:18:17,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:18:17,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 00:18:17,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-15 00:18:17,212 INFO L87 Difference]: Start difference. First operand 646 states and 757 transitions. Second operand 14 states. [2020-10-15 00:18:18,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:18:18,461 INFO L93 Difference]: Finished difference Result 670 states and 781 transitions. [2020-10-15 00:18:18,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-15 00:18:18,461 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-15 00:18:18,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:18:18,464 INFO L225 Difference]: With dead ends: 670 [2020-10-15 00:18:18,464 INFO L226 Difference]: Without dead ends: 649 [2020-10-15 00:18:18,465 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-10-15 00:18:18,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-10-15 00:18:18,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 646. [2020-10-15 00:18:18,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 646 states. [2020-10-15 00:18:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 756 transitions. [2020-10-15 00:18:18,555 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 756 transitions. Word has length 85 [2020-10-15 00:18:18,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:18:18,555 INFO L479 AbstractCegarLoop]: Abstraction has 646 states and 756 transitions. [2020-10-15 00:18:18,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 00:18:18,555 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 756 transitions. [2020-10-15 00:18:18,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-15 00:18:18,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:18:18,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:18:18,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-15 00:18:18,557 INFO L427 AbstractCegarLoop]: === Iteration 39 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:18:18,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:18:18,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1664445418, now seen corresponding path program 1 times [2020-10-15 00:18:18,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:18:18,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005232182] [2020-10-15 00:18:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:18:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 00:18:18,581 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 00:18:18,582 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 00:18:18,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-15 00:18:18,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 12:18:18 BoogieIcfgContainer [2020-10-15 00:18:18,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 00:18:18,619 INFO L168 Benchmark]: Toolchain (without parser) took 97465.67 ms. Allocated memory was 148.4 MB in the beginning and 1.0 GB in the end (delta: 872.4 MB). Free memory was 104.0 MB in the beginning and 945.2 MB in the end (delta: -841.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 7.1 GB. [2020-10-15 00:18:18,620 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-15 00:18:18,620 INFO L168 Benchmark]: CACSL2BoogieTranslator took 595.76 ms. Allocated memory was 148.4 MB in the beginning and 206.0 MB in the end (delta: 57.7 MB). Free memory was 103.6 MB in the beginning and 177.5 MB in the end (delta: -74.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-10-15 00:18:18,620 INFO L168 Benchmark]: Boogie Preprocessor took 77.59 ms. Allocated memory is still 206.0 MB. Free memory was 177.5 MB in the beginning and 173.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-10-15 00:18:18,621 INFO L168 Benchmark]: RCFGBuilder took 1014.80 ms. Allocated memory was 206.0 MB in the beginning and 234.9 MB in the end (delta: 28.8 MB). Free memory was 173.3 MB in the beginning and 195.5 MB in the end (delta: -22.2 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-10-15 00:18:18,621 INFO L168 Benchmark]: TraceAbstraction took 95772.82 ms. Allocated memory was 234.9 MB in the beginning and 1.0 GB in the end (delta: 785.9 MB). Free memory was 193.9 MB in the beginning and 945.2 MB in the end (delta: -751.3 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2020-10-15 00:18:18,623 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 595.76 ms. Allocated memory was 148.4 MB in the beginning and 206.0 MB in the end (delta: 57.7 MB). Free memory was 103.6 MB in the beginning and 177.5 MB in the end (delta: -74.0 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.59 ms. Allocated memory is still 206.0 MB. Free memory was 177.5 MB in the beginning and 173.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1014.80 ms. Allocated memory was 206.0 MB in the beginning and 234.9 MB in the end (delta: 28.8 MB). Free memory was 173.3 MB in the beginning and 195.5 MB in the end (delta: -22.2 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 95772.82 ms. Allocated memory was 234.9 MB in the beginning and 1.0 GB in the end (delta: 785.9 MB). Free memory was 193.9 MB in the beginning and 945.2 MB in the end (delta: -751.3 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 63]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L34] int FloppyThread ; [L35] int KernelMode ; [L36] int Suspended ; [L37] int Executive ; [L38] int DiskController ; [L39] int FloppyDiskPeripheral ; [L40] int FlConfigCallBack ; [L41] int MaximumInterfaceType ; [L42] int MOUNTDEV_MOUNTED_DEVICE_GUID ; [L43] int myStatus ; [L44] int s ; [L45] int UNLOADED ; [L46] int NP ; [L47] int DC ; [L48] int SKIP1 ; [L49] int SKIP2 ; [L50] int MPR1 ; [L51] int MPR3 ; [L52] int IPC ; [L53] int pended ; [L54] int compRegistered ; [L55] int lowerDriverReturn ; [L56] int setEventCalled ; [L57] int customIrp ; [L89] int PagingReferenceCount = 0; [L90] int PagingMutex = 0; [L669] int status ; [L670] int irp = __VERIFIER_nondet_int() ; [L671] int pirp ; [L672] int pirp__IoStatus__Status ; [L673] int irp_choice = __VERIFIER_nondet_int() ; [L674] int devobj = __VERIFIER_nondet_int() ; [L675] int __cil_tmp8 ; [L677] FloppyThread = 0 [L678] KernelMode = 0 [L679] Suspended = 0 [L680] Executive = 0 [L681] DiskController = 0 [L682] FloppyDiskPeripheral = 0 [L683] FlConfigCallBack = 0 [L684] MaximumInterfaceType = 0 [L685] MOUNTDEV_MOUNTED_DEVICE_GUID = 0 [L686] myStatus = 0 [L687] s = 0 [L688] UNLOADED = 0 [L689] NP = 0 [L690] DC = 0 [L691] SKIP1 = 0 [L692] SKIP2 = 0 [L693] MPR1 = 0 [L694] MPR3 = 0 [L695] IPC = 0 [L696] pended = 0 [L697] compRegistered = 0 [L698] lowerDriverReturn = 0 [L699] setEventCalled = 0 [L700] customIrp = 0 [L704] status = 0 [L705] pirp = irp [L706] CALL _BLAST_init() [L72] UNLOADED = 0 [L73] NP = 1 [L74] DC = 2 [L75] SKIP1 = 3 [L76] SKIP2 = 4 [L77] MPR1 = 5 [L78] MPR3 = 6 [L79] IPC = 7 [L80] s = UNLOADED [L81] pended = 0 [L82] compRegistered = 0 [L83] lowerDriverReturn = 0 [L84] setEventCalled = 0 [L85] customIrp = 0 [L706] RET _BLAST_init() [L708] COND TRUE status >= 0 [L709] s = NP [L710] customIrp = 0 [L711] setEventCalled = customIrp [L712] lowerDriverReturn = setEventCalled [L713] compRegistered = lowerDriverReturn [L714] pended = compRegistered [L715] pirp__IoStatus__Status = 0 [L716] myStatus = 0 [L717] COND TRUE irp_choice == 0 [L718] pirp__IoStatus__Status = -1073741637 [L719] myStatus = -1073741637 [L722] CALL stub_driver_init() [L659] s = NP [L660] pended = 0 [L661] compRegistered = 0 [L662] lowerDriverReturn = 0 [L663] setEventCalled = 0 [L664] customIrp = 0 [L722] RET stub_driver_init() [L725] COND FALSE !(status < 0) [L729] int tmp_ndt_1; [L730] tmp_ndt_1 = __VERIFIER_nondet_int() [L731] COND TRUE tmp_ndt_1 == 3 [L738] CALL, EXPR FloppyPnp(devobj, pirp) [L162] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L163] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L164] int Irp__IoStatus__Information ; [L165] int Irp__IoStatus__Status ; [L166] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L167] int disketteExtension__IsRemoved = __VERIFIER_nondet_int() ; [L168] int disketteExtension__IsStarted = __VERIFIER_nondet_int() ; [L169] int disketteExtension__TargetObject = __VERIFIER_nondet_int() ; [L170] int disketteExtension__HoldNewRequests ; [L171] int disketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L172] int disketteExtension__InterfaceString__Buffer = __VERIFIER_nondet_int() ; [L173] int disketteExtension__InterfaceString = __VERIFIER_nondet_int() ; [L174] int disketteExtension__ArcName__Length = __VERIFIER_nondet_int() ; [L175] int disketteExtension__ArcName = __VERIFIER_nondet_int() ; [L176] int irpSp__MinorFunction = __VERIFIER_nondet_int() ; [L177] int IoGetConfigurationInformation__FloppyCount = __VERIFIER_nondet_int() ; [L178] int irpSp ; [L179] int disketteExtension ; [L180] int ntStatus ; [L181] int doneEvent = __VERIFIER_nondet_int() ; [L182] int irpSp___0 ; [L183] int nextIrpSp ; [L184] int nextIrpSp__Control ; [L185] int irpSp___1 ; [L186] int irpSp__Context ; [L187] int irpSp__Control ; [L188] long __cil_tmp29 ; [L189] long __cil_tmp30 ; [L192] ntStatus = 0 [L193] PagingReferenceCount ++ [L194] COND TRUE PagingReferenceCount == 1 [L197] disketteExtension = DeviceObject__DeviceExtension [L198] irpSp = Irp__Tail__Overlay__CurrentStackLocation [L199] COND FALSE !(\read(disketteExtension__IsRemoved)) [L208] COND FALSE !(irpSp__MinorFunction == 0) [L211] COND TRUE irpSp__MinorFunction == 5 [L237] COND TRUE irpSp__MinorFunction == 5 [L240] COND FALSE !(! disketteExtension__IsStarted) [L256] disketteExtension__HoldNewRequests = 1 [L257] CALL, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L99] int status ; [L100] int threadHandle = __VERIFIER_nondet_int() ; [L101] int DisketteExtension__PoweringDown = __VERIFIER_nondet_int() ; [L102] int DisketteExtension__ThreadReferenceCount = __VERIFIER_nondet_int() ; [L103] int DisketteExtension__FloppyThread = __VERIFIER_nondet_int() ; [L104] int Irp__IoStatus__Status ; [L105] int Irp__IoStatus__Information ; [L106] int Irp__Tail__Overlay__CurrentStackLocation__Control ; [L107] int ObjAttributes = __VERIFIER_nondet_int() ; [L108] int __cil_tmp12 ; [L109] int __cil_tmp13 ; [L112] COND FALSE !(DisketteExtension__PoweringDown == 1) [L118] DisketteExtension__ThreadReferenceCount ++ [L119] COND FALSE !(DisketteExtension__ThreadReferenceCount == 0) [L151] COND TRUE pended == 0 [L152] pended = 1 [L158] return (259); [L257] RET, EXPR FlQueueIrpToThread(Irp, disketteExtension) [L257] ntStatus = FlQueueIrpToThread(Irp, disketteExtension) [L260] __cil_tmp29 = (long )ntStatus [L261] COND TRUE __cil_tmp29 == 259L [L263-L264] CALL KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L1034] COND FALSE !(s == MPR3) [L1043] COND FALSE !(customIrp == 1) [L1047] COND FALSE !(s == MPR3) [L1054] int tmp_ndt_8; [L1055] tmp_ndt_8 = __VERIFIER_nondet_int() [L1056] COND TRUE tmp_ndt_8 == 0 [L1062] return (0); [L263-L264] RET KeWaitForSingleObject(disketteExtension__FloppyThread, Executive, KernelMode, 0, 0) [L266] COND FALSE !(disketteExtension__FloppyThread != 0) [L269] disketteExtension__FloppyThread = 0 [L270] Irp__IoStatus__Status = 0 [L271] myStatus = 0 [L272] COND TRUE s == NP [L273] s = SKIP1 [L280] Irp__CurrentLocation ++ [L281] Irp__Tail__Overlay__CurrentStackLocation ++ [L282] CALL, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L936] int returnVal2 ; [L937] int compRetStatus1 ; [L938] int lcontext = __VERIFIER_nondet_int() ; [L939] unsigned long __cil_tmp7 ; [L942] COND FALSE !(\read(compRegistered)) [L955] int tmp_ndt_12; [L956] tmp_ndt_12 = __VERIFIER_nondet_int() [L957] COND TRUE tmp_ndt_12 == 0 [L968] returnVal2 = 0 [L981] COND FALSE !(s == NP) [L985] COND FALSE !(s == MPR1) [L994] COND TRUE s == SKIP1 [L995] s = SKIP2 [L996] lowerDriverReturn = returnVal2 [L1004] return (returnVal2); [L282] RET, EXPR IofCallDriver(disketteExtension__TargetObject, Irp) [L282] ntStatus = IofCallDriver(disketteExtension__TargetObject, Irp) [L428] PagingReferenceCount -- [L429] COND TRUE PagingReferenceCount == 0 [L432] return (ntStatus); [L738] RET, EXPR FloppyPnp(devobj, pirp) [L738] status = FloppyPnp(devobj, pirp) [L748] COND TRUE pended == 1 [L749] COND FALSE !(s == NP) [L756] COND TRUE pended == 1 [L757] COND FALSE !(s == MPR3) [L764] COND TRUE s != UNLOADED [L765] COND TRUE status != -1 [L766] COND FALSE !(s != SKIP2) [L780] COND TRUE pended == 1 [L781] COND TRUE status != 259 [L782] CALL errorFn() [L63] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 26 procedures, 305 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 95.6s, OverallIterations: 39, TraceHistogramMax: 1, AutomataDifference: 63.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13210 SDtfs, 20035 SDslu, 21202 SDs, 0 SdLazy, 46001 SolverSat, 6397 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 864 GetRequests, 363 SyntacticMatches, 2 SemanticMatches, 499 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 12.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1219occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.1s AutomataMinimizationTime, 38 MinimizatonAttempts, 3305 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 27.6s InterpolantComputationTime, 2114 NumberOfCodeBlocks, 2114 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1994 ConstructedInterpolants, 0 QuantifiedInterpolants, 538580 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...