/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 SingleStatement --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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl1.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:25:29,948 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:25:29,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:25:29,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:25:29,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:25:29,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:25:29,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:25:29,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:25:29,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:25:29,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:25:29,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:25:29,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:25:29,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:25:29,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:25:29,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:25:29,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:25:29,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:25:30,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:25:30,002 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:25:30,004 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:25:30,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:25:30,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:25:30,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:25:30,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:25:30,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:25:30,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:25:30,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:25:30,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:25:30,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:25:30,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:25:30,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:25:30,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:25:30,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:25:30,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:25:30,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:25:30,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:25:30,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:25:30,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:25:30,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:25:30,039 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:25:30,041 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:25:30,041 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 [2020-09-25 13:25:30,102 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:25:30,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:25:30,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:25:30,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:25:30,104 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:25:30,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:25:30,105 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:25:30,105 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:25:30,105 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:25:30,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:25:30,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:25:30,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:25:30,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:25:30,106 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:25:30,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:25:30,106 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:25:30,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:25:30,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:25:30,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:25:30,107 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:25:30,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:25:30,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:25:30,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:25:30,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:25:30,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:25:30,109 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:25:30,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:25:30,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:25:30,109 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:25:30,109 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 -> SingleStatement 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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=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=0.4;log-additional-information=true; [2020-09-25 13:25:30,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:25:30,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:25:30,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:25:30,629 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:25:30,630 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:25:30,632 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2020-09-25 13:25:30,711 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/931b76dd5/6354a22178654261b0a13965a8376baf/FLAG2008afdc2 [2020-09-25 13:25:31,326 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:25:31,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl1.cil.c [2020-09-25 13:25:31,349 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/931b76dd5/6354a22178654261b0a13965a8376baf/FLAG2008afdc2 [2020-09-25 13:25:31,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/931b76dd5/6354a22178654261b0a13965a8376baf [2020-09-25 13:25:31,607 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:25:31,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:25:31,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:25:31,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:25:31,619 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:25:31,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:25:31" (1/1) ... [2020-09-25 13:25:31,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d574d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:31, skipping insertion in model container [2020-09-25 13:25:31,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:25:31" (1/1) ... [2020-09-25 13:25:31,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:25:31,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:25:32,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:25:32,023 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:25:32,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:25:32,221 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:25:32,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:32 WrapperNode [2020-09-25 13:25:32,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:25:32,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:25:32,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:25:32,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:25:32,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:32" (1/1) ... [2020-09-25 13:25:32,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:32" (1/1) ... [2020-09-25 13:25:32,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:32" (1/1) ... [2020-09-25 13:25:32,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:32" (1/1) ... [2020-09-25 13:25:32,264 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:32" (1/1) ... [2020-09-25 13:25:32,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:32" (1/1) ... [2020-09-25 13:25:32,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:32" (1/1) ... [2020-09-25 13:25:32,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:25:32,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:25:32,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:25:32,283 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:25:32,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:32" (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 [2020-09-25 13:25:32,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:25:32,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:25:32,364 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-09-25 13:25:32,365 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-09-25 13:25:32,365 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-09-25 13:25:32,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:25:32,365 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-09-25 13:25:32,366 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-09-25 13:25:32,366 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-09-25 13:25:32,366 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-09-25 13:25:32,366 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-09-25 13:25:32,366 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-09-25 13:25:32,366 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-09-25 13:25:32,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:25:32,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 13:25:32,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:25:32,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 13:25:32,367 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-09-25 13:25:32,368 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-09-25 13:25:32,368 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-09-25 13:25:32,370 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-09-25 13:25:32,370 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-09-25 13:25:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-09-25 13:25:32,371 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-09-25 13:25:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-09-25 13:25:32,373 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-09-25 13:25:32,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:25:32,373 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-09-25 13:25:32,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:25:32,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:25:32,747 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 13:25:32,917 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume !false; [2020-09-25 13:25:32,917 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##13: assume false; [2020-09-25 13:25:32,919 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 13:25:32,974 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume false; [2020-09-25 13:25:32,974 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !false; [2020-09-25 13:25:33,000 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 13:25:33,038 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-09-25 13:25:33,038 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-09-25 13:25:33,054 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 13:25:33,224 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-09-25 13:25:33,224 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-09-25 13:25:33,245 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:25:33,245 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:25:33,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:25:33 BoogieIcfgContainer [2020-09-25 13:25:33,253 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:25:33,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:25:33,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:25:33,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:25:33,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:25:31" (1/3) ... [2020-09-25 13:25:33,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7494de1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:25:33, skipping insertion in model container [2020-09-25 13:25:33,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:25:32" (2/3) ... [2020-09-25 13:25:33,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7494de1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:25:33, skipping insertion in model container [2020-09-25 13:25:33,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:25:33" (3/3) ... [2020-09-25 13:25:33,264 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl1.cil.c [2020-09-25 13:25:33,276 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:25:33,288 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:25:33,312 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:25:33,346 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:25:33,346 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:25:33,346 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:25:33,346 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:25:33,347 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:25:33,347 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:25:33,347 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:25:33,347 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:25:33,379 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states. [2020-09-25 13:25:33,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 13:25:33,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:33,394 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] [2020-09-25 13:25:33,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:33,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:33,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1164793869, now seen corresponding path program 1 times [2020-09-25 13:25:33,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:33,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562696758] [2020-09-25 13:25:33,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:33,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:34,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:34,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:34,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:34,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:34,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:35,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:35,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 13:25:35,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:25:35,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1670 [2020-09-25 13:25:35,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:35,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:35,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:25:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-25 13:25:35,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:25:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 13:25:35,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:35,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:35,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:35,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:25:35,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:35,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:25:35,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:35,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:35,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:35,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:25:35,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:25:35,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:35,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:35,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:35,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:25:35,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:35,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:25:35,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:35,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:35,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:25:35,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:35,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:25:35,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:35,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:25:35,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562696758] [2020-09-25 13:25:35,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:25:35,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:25:35,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888020250] [2020-09-25 13:25:35,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:25:35,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:35,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:25:35,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:25:35,744 INFO L87 Difference]: Start difference. First operand 366 states. Second operand 5 states. [2020-09-25 13:25:37,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:37,057 INFO L93 Difference]: Finished difference Result 666 states and 826 transitions. [2020-09-25 13:25:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:25:37,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-09-25 13:25:37,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:37,083 INFO L225 Difference]: With dead ends: 666 [2020-09-25 13:25:37,083 INFO L226 Difference]: Without dead ends: 382 [2020-09-25 13:25:37,094 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 [2020-09-25 13:25:37,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-09-25 13:25:37,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 351. [2020-09-25 13:25:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-09-25 13:25:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 401 transitions. [2020-09-25 13:25:37,191 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 401 transitions. Word has length 83 [2020-09-25 13:25:37,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:37,192 INFO L479 AbstractCegarLoop]: Abstraction has 351 states and 401 transitions. [2020-09-25 13:25:37,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:25:37,193 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 401 transitions. [2020-09-25 13:25:37,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 13:25:37,199 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:37,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:37,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:25:37,201 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:37,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:37,201 INFO L82 PathProgramCache]: Analyzing trace with hash 192642435, now seen corresponding path program 1 times [2020-09-25 13:25:37,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:37,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683783018] [2020-09-25 13:25:37,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:37,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:37,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 13:25:37,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:37,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-25 13:25:37,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:37,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:37,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:25:37,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-09-25 13:25:37,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 13:25:37,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:37,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:37,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:37,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:37,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:25:37,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:37,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:25:37,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:37,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:37,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:37,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:37,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:25:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:37,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:37,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:37,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:25:37,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:37,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:25:37,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:37,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:37,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:37,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:37,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:37,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:25:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:37,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:37,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:25:37,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:37,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:25:37,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:37,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:25:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:37,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 13:25:37,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:25:37,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683783018] [2020-09-25 13:25:37,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:25:37,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:25:37,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497678588] [2020-09-25 13:25:37,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:25:37,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:37,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:25:37,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:25:37,939 INFO L87 Difference]: Start difference. First operand 351 states and 401 transitions. Second operand 6 states. [2020-09-25 13:25:39,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:39,368 INFO L93 Difference]: Finished difference Result 588 states and 683 transitions. [2020-09-25 13:25:39,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:25:39,369 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 13:25:39,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:39,377 INFO L225 Difference]: With dead ends: 588 [2020-09-25 13:25:39,377 INFO L226 Difference]: Without dead ends: 502 [2020-09-25 13:25:39,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:25:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-09-25 13:25:39,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 463. [2020-09-25 13:25:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-09-25 13:25:39,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 527 transitions. [2020-09-25 13:25:39,424 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 527 transitions. Word has length 146 [2020-09-25 13:25:39,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:39,425 INFO L479 AbstractCegarLoop]: Abstraction has 463 states and 527 transitions. [2020-09-25 13:25:39,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:25:39,426 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 527 transitions. [2020-09-25 13:25:39,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-25 13:25:39,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:39,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:39,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:25:39,429 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:39,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:39,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1733953169, now seen corresponding path program 1 times [2020-09-25 13:25:39,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:39,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773290366] [2020-09-25 13:25:39,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:39,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:39,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:39,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 13:25:39,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-09-25 13:25:39,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:39,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:25:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-09-25 13:25:39,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 13:25:39,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:39,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:39,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:39,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:39,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:25:39,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:39,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:25:39,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:39,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:39,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:39,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:25:39,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:39,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:39,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:39,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:25:39,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:39,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:25:39,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:39,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:39,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:39,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:39,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:40,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:25:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:40,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:40,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:40,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:25:40,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:40,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:25:40,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:40,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:40,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:25:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:40,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:25:40,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:40,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:25:40,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773290366] [2020-09-25 13:25:40,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:25:40,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:25:40,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004752704] [2020-09-25 13:25:40,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:25:40,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:40,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:25:40,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:25:40,070 INFO L87 Difference]: Start difference. First operand 463 states and 527 transitions. Second operand 6 states. [2020-09-25 13:25:41,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:41,164 INFO L93 Difference]: Finished difference Result 665 states and 762 transitions. [2020-09-25 13:25:41,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:25:41,164 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2020-09-25 13:25:41,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:41,169 INFO L225 Difference]: With dead ends: 665 [2020-09-25 13:25:41,169 INFO L226 Difference]: Without dead ends: 556 [2020-09-25 13:25:41,171 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:25:41,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-09-25 13:25:41,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 502. [2020-09-25 13:25:41,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2020-09-25 13:25:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 574 transitions. [2020-09-25 13:25:41,209 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 574 transitions. Word has length 148 [2020-09-25 13:25:41,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:41,210 INFO L479 AbstractCegarLoop]: Abstraction has 502 states and 574 transitions. [2020-09-25 13:25:41,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:25:41,210 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 574 transitions. [2020-09-25 13:25:41,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 13:25:41,222 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:41,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:41,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:25:41,223 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:41,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:41,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1023389875, now seen corresponding path program 1 times [2020-09-25 13:25:41,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:41,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294339602] [2020-09-25 13:25:41,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:41,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:41,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 13:25:41,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:41,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-09-25 13:25:41,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:41,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:41,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:25:41,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-09-25 13:25:41,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:25:41,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:41,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:41,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:41,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:41,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:25:41,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:41,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:25:41,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:41,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:41,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:41,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:25:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:41,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:41,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:41,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:25:41,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:41,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:25:41,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:41,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:41,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:41,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:41,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:41,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:25:41,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:41,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:41,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:41,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:25:41,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:41,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:25:41,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:41,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:41,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:41,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:42,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:25:42,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294339602] [2020-09-25 13:25:42,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:25:42,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 13:25:42,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558968571] [2020-09-25 13:25:42,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:25:42,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:42,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:25:42,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:25:42,026 INFO L87 Difference]: Start difference. First operand 502 states and 574 transitions. Second operand 6 states. [2020-09-25 13:25:43,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:43,048 INFO L93 Difference]: Finished difference Result 506 states and 577 transitions. [2020-09-25 13:25:43,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:25:43,048 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-09-25 13:25:43,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:43,052 INFO L225 Difference]: With dead ends: 506 [2020-09-25 13:25:43,052 INFO L226 Difference]: Without dead ends: 503 [2020-09-25 13:25:43,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:25:43,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2020-09-25 13:25:43,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 502. [2020-09-25 13:25:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 502 states. [2020-09-25 13:25:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 573 transitions. [2020-09-25 13:25:43,080 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 573 transitions. Word has length 172 [2020-09-25 13:25:43,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:43,081 INFO L479 AbstractCegarLoop]: Abstraction has 502 states and 573 transitions. [2020-09-25 13:25:43,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:25:43,081 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 573 transitions. [2020-09-25 13:25:43,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-09-25 13:25:43,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:43,085 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:43,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:25:43,086 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:43,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:43,086 INFO L82 PathProgramCache]: Analyzing trace with hash -734364592, now seen corresponding path program 1 times [2020-09-25 13:25:43,087 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:43,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446093994] [2020-09-25 13:25:43,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:43,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:43,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:43,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:43,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-09-25 13:25:43,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:25:43,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-09-25 13:25:43,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:43,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:43,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:25:43,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-09-25 13:25:43,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 13:25:43,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:43,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:43,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:44,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:44,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:25:44,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:44,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:25:44,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:44,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:44,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:44,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:44,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:25:44,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:44,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:44,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:44,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:25:44,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:44,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:25:44,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:44,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:44,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:44,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:44,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:44,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:44,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:25:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:44,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:44,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:44,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:25:44,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:44,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:25:44,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:44,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:44,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:44,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:44,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 13:25:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:44,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:44,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:44,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:25:44,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:44,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:25:44,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:44,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:44,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:25:44,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:25:44,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:25:44,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:25:44,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446093994] [2020-09-25 13:25:44,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:25:44,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:25:44,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398045948] [2020-09-25 13:25:44,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:25:44,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:44,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:25:44,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:25:44,225 INFO L87 Difference]: Start difference. First operand 502 states and 573 transitions. Second operand 8 states. [2020-09-25 13:25:45,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:45,500 INFO L93 Difference]: Finished difference Result 580 states and 662 transitions. [2020-09-25 13:25:45,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:25:45,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 186 [2020-09-25 13:25:45,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:45,504 INFO L225 Difference]: With dead ends: 580 [2020-09-25 13:25:45,504 INFO L226 Difference]: Without dead ends: 471 [2020-09-25 13:25:45,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:25:45,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-09-25 13:25:45,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 451. [2020-09-25 13:25:45,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 451 states. [2020-09-25 13:25:45,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 511 transitions. [2020-09-25 13:25:45,539 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 511 transitions. Word has length 186 [2020-09-25 13:25:45,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:45,540 INFO L479 AbstractCegarLoop]: Abstraction has 451 states and 511 transitions. [2020-09-25 13:25:45,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:25:45,540 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 511 transitions. [2020-09-25 13:25:45,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 13:25:45,543 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:45,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:45,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:25:45,544 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:45,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:45,544 INFO L82 PathProgramCache]: Analyzing trace with hash -617767856, now seen corresponding path program 1 times [2020-09-25 13:25:45,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:45,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583008853] [2020-09-25 13:25:45,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:45,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:45,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:46,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:46,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:47,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:48,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:48,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 13:25:48,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:25:48,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3054 [2020-09-25 13:25:48,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:48,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:48,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:25:48,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 13:25:48,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-09-25 13:25:48,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:48,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:48,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:48,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:48,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:25:48,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:48,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:25:48,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:48,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:48,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:48,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:48,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:48,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:48,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:25:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:48,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:48,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:48,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:25:48,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:48,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:25:48,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:48,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:48,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:48,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:25:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:48,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:48,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:48,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:25:48,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:48,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:25:48,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:48,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:48,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:25:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:48,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:25:48,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:25:48,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 13:25:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:48,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:48,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:48,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:25:48,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:48,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 13:25:48,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:48,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:25:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 13:25:48,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:49,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-25 13:25:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:49,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:49,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:49,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:25:49,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:49,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:25:49,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:49,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:49,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:49,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:49,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:49,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:25:49,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583008853] [2020-09-25 13:25:49,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:25:49,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:25:49,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028324941] [2020-09-25 13:25:49,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:25:49,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:49,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:25:49,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:25:49,075 INFO L87 Difference]: Start difference. First operand 451 states and 511 transitions. Second operand 8 states. [2020-09-25 13:25:50,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:50,427 INFO L93 Difference]: Finished difference Result 460 states and 522 transitions. [2020-09-25 13:25:50,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 13:25:50,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 191 [2020-09-25 13:25:50,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:50,431 INFO L225 Difference]: With dead ends: 460 [2020-09-25 13:25:50,432 INFO L226 Difference]: Without dead ends: 280 [2020-09-25 13:25:50,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:25:50,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-09-25 13:25:50,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2020-09-25 13:25:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-09-25 13:25:50,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 293 transitions. [2020-09-25 13:25:50,454 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 293 transitions. Word has length 191 [2020-09-25 13:25:50,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:50,455 INFO L479 AbstractCegarLoop]: Abstraction has 280 states and 293 transitions. [2020-09-25 13:25:50,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:25:50,455 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 293 transitions. [2020-09-25 13:25:50,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-25 13:25:50,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:50,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:50,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:25:50,461 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:50,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:50,462 INFO L82 PathProgramCache]: Analyzing trace with hash -836248096, now seen corresponding path program 1 times [2020-09-25 13:25:50,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:50,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531465304] [2020-09-25 13:25:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:50,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:50,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-09-25 13:25:50,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:50,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-25 13:25:50,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:50,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:50,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:25:50,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-09-25 13:25:50,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:25:50,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:50,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:50,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:50,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:50,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:25:50,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:50,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:25:50,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:50,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:50,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:50,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:50,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:51,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:25:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:51,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:51,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:51,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:25:51,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:51,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:25:51,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:51,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:51,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:51,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:51,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:25:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:51,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:51,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:51,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:25:51,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:51,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:25:51,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:51,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:51,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:51,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:51,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-25 13:25:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:51,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:51,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:51,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:25:51,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:51,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:25:51,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:51,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:51,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:51,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:51,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:51,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:51,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:25:51,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:51,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:51,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:51,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 13:25:51,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:51,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:25:51,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:51,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:51,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:51,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:51,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:51,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:51,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-09-25 13:25:51,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:51,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:51,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:51,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:25:51,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:51,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:25:51,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:51,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:51,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:25:51,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:51,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:25:51,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:51,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:25:51,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531465304] [2020-09-25 13:25:51,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:25:51,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:25:51,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69799735] [2020-09-25 13:25:51,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:25:51,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:51,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:25:51,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:25:51,178 INFO L87 Difference]: Start difference. First operand 280 states and 293 transitions. Second operand 8 states. [2020-09-25 13:25:51,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:51,557 INFO L93 Difference]: Finished difference Result 325 states and 343 transitions. [2020-09-25 13:25:51,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:25:51,557 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 200 [2020-09-25 13:25:51,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:51,560 INFO L225 Difference]: With dead ends: 325 [2020-09-25 13:25:51,560 INFO L226 Difference]: Without dead ends: 276 [2020-09-25 13:25:51,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:25:51,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-09-25 13:25:51,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2020-09-25 13:25:51,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 276 states. [2020-09-25 13:25:51,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 287 transitions. [2020-09-25 13:25:51,576 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 287 transitions. Word has length 200 [2020-09-25 13:25:51,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:51,577 INFO L479 AbstractCegarLoop]: Abstraction has 276 states and 287 transitions. [2020-09-25 13:25:51,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:25:51,577 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 287 transitions. [2020-09-25 13:25:51,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 13:25:51,579 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:51,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:51,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:25:51,580 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:51,581 INFO L82 PathProgramCache]: Analyzing trace with hash -602224561, now seen corresponding path program 1 times [2020-09-25 13:25:51,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:51,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292754578] [2020-09-25 13:25:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:51,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:51,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:53,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:53,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-09-25 13:25:53,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:25:53,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1398 [2020-09-25 13:25:53,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:53,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:53,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:25:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 13:25:53,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 13:25:53,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:53,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:53,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:53,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:53,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:25:53,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:53,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:25:53,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:53,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:53,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:53,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:53,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:53,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:25:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:53,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:53,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:53,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:25:53,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:53,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 13:25:53,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:53,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:25:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:25:53,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:53,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:25:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:53,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:53,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:53,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:25:53,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:53,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:25:53,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:53,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:53,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:25:53,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:53,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:25:53,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:53,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 13:25:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:53,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:53,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:53,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-25 13:25:53,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:53,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 13:25:53,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:53,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:53,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:25:53,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 13:25:53,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:25:53,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:53,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:25:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:53,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:53,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:53,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:25:53,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:53,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:25:53,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:53,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:53,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:53,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:53,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:53,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:53,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:25:53,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:53,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:53,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:53,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 13:25:53,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:53,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:25:53,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:53,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:53,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:53,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:53,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:53,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:53,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:25:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:53,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:53,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:53,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:25:53,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:53,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:25:53,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:53,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:25:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:53,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 13:25:53,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:25:53,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292754578] [2020-09-25 13:25:53,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:25:53,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 13:25:53,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560276965] [2020-09-25 13:25:53,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:25:53,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:53,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:25:53,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:25:53,701 INFO L87 Difference]: Start difference. First operand 276 states and 287 transitions. Second operand 12 states. [2020-09-25 13:25:54,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:54,654 INFO L93 Difference]: Finished difference Result 321 states and 337 transitions. [2020-09-25 13:25:54,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 13:25:54,654 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 216 [2020-09-25 13:25:54,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:54,657 INFO L225 Difference]: With dead ends: 321 [2020-09-25 13:25:54,657 INFO L226 Difference]: Without dead ends: 274 [2020-09-25 13:25:54,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-09-25 13:25:54,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2020-09-25 13:25:54,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 274. [2020-09-25 13:25:54,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-25 13:25:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 284 transitions. [2020-09-25 13:25:54,674 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 284 transitions. Word has length 216 [2020-09-25 13:25:54,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:54,675 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 284 transitions. [2020-09-25 13:25:54,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:25:54,675 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 284 transitions. [2020-09-25 13:25:54,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-25 13:25:54,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:54,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:54,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:25:54,678 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:54,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:54,679 INFO L82 PathProgramCache]: Analyzing trace with hash -2077149002, now seen corresponding path program 1 times [2020-09-25 13:25:54,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:54,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256192530] [2020-09-25 13:25:54,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:54,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:54,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:55,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:56,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:56,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:56,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 13:25:56,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:25:56,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1775 [2020-09-25 13:25:56,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:56,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:56,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:25:56,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 218 [2020-09-25 13:25:56,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:25:56,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:56,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:25:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:56,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:56,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:56,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:25:56,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:25:56,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:56,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:56,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:56,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:56,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:25:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:56,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:56,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:25:56,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:56,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:25:56,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:56,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:56,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:56,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:56,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:56,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:56,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:25:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:56,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:56,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:56,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:25:56,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:56,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:25:56,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:56,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:56,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:25:56,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 13:25:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:56,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:56,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:56,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:56,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:25:56,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:25:56,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 13:25:56,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:56,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:25:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:56,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 13:25:56,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:56,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:25:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:56,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:56,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:56,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:25:56,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:56,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:25:56,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:56,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:56,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:56,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:56,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:56,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:56,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:25:56,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:56,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:56,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:56,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 13:25:56,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:56,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:25:56,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:56,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:56,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:56,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:56,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:25:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:56,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:56,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:25:56,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:25:56,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:25:56,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:25:56,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:25:56,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:25:56,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:25:56,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:25:56,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:25:56,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:25:56,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:25:57,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256192530] [2020-09-25 13:25:57,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:25:57,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-25 13:25:57,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306444455] [2020-09-25 13:25:57,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:25:57,006 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:25:57,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:25:57,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:25:57,006 INFO L87 Difference]: Start difference. First operand 274 states and 284 transitions. Second operand 12 states. [2020-09-25 13:25:57,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:25:57,787 INFO L93 Difference]: Finished difference Result 308 states and 319 transitions. [2020-09-25 13:25:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:25:57,788 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 218 [2020-09-25 13:25:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:25:57,790 INFO L225 Difference]: With dead ends: 308 [2020-09-25 13:25:57,790 INFO L226 Difference]: Without dead ends: 277 [2020-09-25 13:25:57,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:25:57,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-09-25 13:25:57,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2020-09-25 13:25:57,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-09-25 13:25:57,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 286 transitions. [2020-09-25 13:25:57,804 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 286 transitions. Word has length 218 [2020-09-25 13:25:57,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:25:57,804 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 286 transitions. [2020-09-25 13:25:57,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:25:57,805 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 286 transitions. [2020-09-25 13:25:57,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 13:25:57,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:25:57,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:25:57,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:25:57,808 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:25:57,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:25:57,809 INFO L82 PathProgramCache]: Analyzing trace with hash 1018616121, now seen corresponding path program 1 times [2020-09-25 13:25:57,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:25:57,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714953514] [2020-09-25 13:25:57,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:25:57,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:25:57,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:58,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:58,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:25:58,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:00,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:00,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 13:26:00,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:26:00,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2436 [2020-09-25 13:26:00,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:00,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:00,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:26:00,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 219 [2020-09-25 13:26:00,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:26:00,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:00,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:00,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:00,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:00,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:26:00,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:00,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:26:00,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:00,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:00,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:00,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:00,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:26:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:00,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:00,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:00,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:26:00,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:00,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:26:00,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:00,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:00,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:00,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:00,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:00,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:00,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:26:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:00,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:00,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:00,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:26:00,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:00,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:00,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:00,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:00,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:00,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:00,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 13:26:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:00,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:00,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:00,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:26:00,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:26:00,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 13:26:00,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:00,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:00,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:00,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:00,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:26:00,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:00,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:26:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:00,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:00,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:00,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:26:00,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:00,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:26:00,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:00,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:00,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:00,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:00,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:00,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:00,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:26:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:00,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:00,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:00,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 13:26:00,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:00,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:26:00,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:00,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:00,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:00,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:00,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:00,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:26:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:00,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:00,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:00,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:26:00,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:00,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:00,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:00,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:00,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:00,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:00,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:00,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714953514] [2020-09-25 13:26:00,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:00,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:26:00,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256036176] [2020-09-25 13:26:00,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:26:00,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:00,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:26:00,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:26:00,691 INFO L87 Difference]: Start difference. First operand 277 states and 286 transitions. Second operand 9 states. [2020-09-25 13:26:01,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:01,427 INFO L93 Difference]: Finished difference Result 297 states and 307 transitions. [2020-09-25 13:26:01,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:26:01,427 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2020-09-25 13:26:01,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:01,429 INFO L225 Difference]: With dead ends: 297 [2020-09-25 13:26:01,430 INFO L226 Difference]: Without dead ends: 268 [2020-09-25 13:26:01,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:26:01,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-09-25 13:26:01,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 263. [2020-09-25 13:26:01,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-09-25 13:26:01,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 269 transitions. [2020-09-25 13:26:01,449 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 269 transitions. Word has length 219 [2020-09-25 13:26:01,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:01,450 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 269 transitions. [2020-09-25 13:26:01,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:26:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 269 transitions. [2020-09-25 13:26:01,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 13:26:01,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:01,454 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:01,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:26:01,455 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:01,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:01,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1070789190, now seen corresponding path program 1 times [2020-09-25 13:26:01,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:01,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581383884] [2020-09-25 13:26:01,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:01,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:01,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:01,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:03,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:03,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 13:26:03,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:26:03,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1533 [2020-09-25 13:26:03,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:03,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:03,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:26:03,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-09-25 13:26:03,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 13:26:03,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:03,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:03,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:03,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:26:03,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:03,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:26:03,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:03,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:03,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:03,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:26:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:03,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:03,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:03,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:26:03,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:03,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:26:03,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:03,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:03,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:03,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:03,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:03,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:03,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:26:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:03,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:03,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:03,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:26:03,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:03,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:26:03,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:03,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:26:03,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:03,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 13:26:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:03,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:03,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:03,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:03,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:26:03,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:26:03,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 13:26:03,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:03,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 13:26:03,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:03,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:26:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:03,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:03,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:03,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:26:03,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:03,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:26:03,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:03,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:03,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:03,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:03,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:26:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:03,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:03,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:03,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 13:26:03,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:03,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:26:03,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:03,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:03,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:03,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:03,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:03,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:03,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:26:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:03,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:03,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:03,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:26:03,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:03,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:03,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:03,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:03,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:03,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:03,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:03,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581383884] [2020-09-25 13:26:03,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:03,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:26:03,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055049432] [2020-09-25 13:26:03,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:26:03,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:03,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:26:03,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:26:03,424 INFO L87 Difference]: Start difference. First operand 263 states and 269 transitions. Second operand 9 states. [2020-09-25 13:26:04,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:04,433 INFO L93 Difference]: Finished difference Result 445 states and 455 transitions. [2020-09-25 13:26:04,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:26:04,434 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 219 [2020-09-25 13:26:04,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:04,437 INFO L225 Difference]: With dead ends: 445 [2020-09-25 13:26:04,437 INFO L226 Difference]: Without dead ends: 435 [2020-09-25 13:26:04,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=129, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:26:04,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-09-25 13:26:04,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 405. [2020-09-25 13:26:04,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 405 states. [2020-09-25 13:26:04,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 415 transitions. [2020-09-25 13:26:04,454 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 415 transitions. Word has length 219 [2020-09-25 13:26:04,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:04,455 INFO L479 AbstractCegarLoop]: Abstraction has 405 states and 415 transitions. [2020-09-25 13:26:04,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:26:04,455 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 415 transitions. [2020-09-25 13:26:04,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 13:26:04,457 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:04,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:04,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 13:26:04,458 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:04,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:04,458 INFO L82 PathProgramCache]: Analyzing trace with hash 666432309, now seen corresponding path program 1 times [2020-09-25 13:26:04,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:04,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328960896] [2020-09-25 13:26:04,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:04,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:04,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:04,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:05,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:07,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 13:26:07,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:26:07,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2970 [2020-09-25 13:26:07,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:07,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:26:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 13:26:07,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:26:07,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:07,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:07,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:07,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:26:07,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:07,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:26:07,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:07,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:07,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:07,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:07,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:26:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:07,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:07,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:26:07,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:07,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 13:26:07,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:07,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:07,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:26:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:07,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:26:07,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:07,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:26:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:07,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:07,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:26:07,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:07,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:26:07,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:07,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:07,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:07,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:07,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:26:07,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:07,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 13:26:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:07,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:07,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:26:07,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:07,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 13:26:07,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:07,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:07,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:26:07,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:07,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 13:26:07,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:07,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:26:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:07,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:07,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:26:07,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:07,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:26:07,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:07,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:07,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:07,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:26:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:07,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:07,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 13:26:07,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:07,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:26:07,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:07,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:07,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:26:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:07,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:07,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:07,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:26:07,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:07,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:07,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:07,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:07,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:07,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:07,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:07,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:08,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:08,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328960896] [2020-09-25 13:26:08,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:08,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 13:26:08,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103734124] [2020-09-25 13:26:08,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:26:08,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:08,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:26:08,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:26:08,045 INFO L87 Difference]: Start difference. First operand 405 states and 415 transitions. Second operand 13 states. [2020-09-25 13:26:08,652 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-09-25 13:26:09,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:09,189 INFO L93 Difference]: Finished difference Result 413 states and 422 transitions. [2020-09-25 13:26:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 13:26:09,190 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 219 [2020-09-25 13:26:09,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:09,193 INFO L225 Difference]: With dead ends: 413 [2020-09-25 13:26:09,193 INFO L226 Difference]: Without dead ends: 383 [2020-09-25 13:26:09,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=177, Invalid=423, Unknown=0, NotChecked=0, Total=600 [2020-09-25 13:26:09,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-09-25 13:26:09,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 377. [2020-09-25 13:26:09,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-09-25 13:26:09,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 384 transitions. [2020-09-25 13:26:09,211 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 384 transitions. Word has length 219 [2020-09-25 13:26:09,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:09,212 INFO L479 AbstractCegarLoop]: Abstraction has 377 states and 384 transitions. [2020-09-25 13:26:09,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:26:09,212 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 384 transitions. [2020-09-25 13:26:09,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 13:26:09,214 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:09,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:09,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 13:26:09,214 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:09,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:09,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1215507752, now seen corresponding path program 1 times [2020-09-25 13:26:09,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:09,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590535966] [2020-09-25 13:26:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:09,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:09,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:10,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:10,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-09-25 13:26:10,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:26:10,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1637 [2020-09-25 13:26:10,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:10,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:10,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:26:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-09-25 13:26:10,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 13:26:10,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:10,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:10,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:10,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:10,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:26:10,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:10,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:26:10,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:10,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:11,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:26:11,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:11,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:11,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:26:11,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:26:11,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:11,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:11,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 13:26:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:11,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:11,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:26:11,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:11,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:11,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:11,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:11,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:11,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:11,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-25 13:26:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:11,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:11,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:26:11,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:26:11,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 13:26:11,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:11,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:26:11,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:11,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:26:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:11,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:11,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:26:11,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:11,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:26:11,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:11,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:11,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:26:11,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:11,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:26:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:11,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:11,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 13:26:11,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:11,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:26:11,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:11,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:11,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:11,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:11,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:26:11,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:11,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:26:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:11,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:11,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:11,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:26:11,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:11,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 13:26:11,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:11,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:11,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:26:11,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:11,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:26:11,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:11,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590535966] [2020-09-25 13:26:11,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:11,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-25 13:26:11,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512216357] [2020-09-25 13:26:11,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 13:26:11,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:11,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 13:26:11,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-25 13:26:11,327 INFO L87 Difference]: Start difference. First operand 377 states and 384 transitions. Second operand 9 states. [2020-09-25 13:26:12,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:12,059 INFO L93 Difference]: Finished difference Result 379 states and 385 transitions. [2020-09-25 13:26:12,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:26:12,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 220 [2020-09-25 13:26:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:12,063 INFO L225 Difference]: With dead ends: 379 [2020-09-25 13:26:12,063 INFO L226 Difference]: Without dead ends: 366 [2020-09-25 13:26:12,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:26:12,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-09-25 13:26:12,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2020-09-25 13:26:12,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 366 states. [2020-09-25 13:26:12,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 371 transitions. [2020-09-25 13:26:12,080 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 371 transitions. Word has length 220 [2020-09-25 13:26:12,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:12,080 INFO L479 AbstractCegarLoop]: Abstraction has 366 states and 371 transitions. [2020-09-25 13:26:12,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 13:26:12,081 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 371 transitions. [2020-09-25 13:26:12,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 13:26:12,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:26:12,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:26:12,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 13:26:12,083 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:26:12,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:26:12,083 INFO L82 PathProgramCache]: Analyzing trace with hash -347861693, now seen corresponding path program 1 times [2020-09-25 13:26:12,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:26:12,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988325148] [2020-09-25 13:26:12,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:26:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:12,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:12,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:12,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:12,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-09-25 13:26:12,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:26:12,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 756 [2020-09-25 13:26:12,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:12,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:26:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-09-25 13:26:12,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:26:12,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:12,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:26:12,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:12,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:12,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:12,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:26:12,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:12,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:26:12,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:12,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:12,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:12,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:12,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:12,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:13,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 13:26:13,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:13,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:13,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 13:26:13,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:13,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:26:13,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:13,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:13,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:13,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:13,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:13,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 13:26:13,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:13,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:13,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 13:26:13,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:13,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:26:13,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:13,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:13,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:13,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:13,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-25 13:26:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:13,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:13,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 13:26:13,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:26:13,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 13:26:13,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:13,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:13,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:26:13,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:13,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-25 13:26:13,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:26:13,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 13:26:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:13,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:13,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:26:13,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:13,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:26:13,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:13,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:13,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:13,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:13,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:13,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:13,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 13:26:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:13,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:13,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 13:26:13,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:13,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:26:13,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:13,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:13,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:13,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:13,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:13,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:13,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-25 13:26:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:26:13,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:26:13,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:26:13,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 13:26:13,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:26:13,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:26:13,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:26:13,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:26:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:26:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:26:13,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:26:13,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:26:13,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:26:13,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988325148] [2020-09-25 13:26:13,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:26:13,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 13:26:13,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452681066] [2020-09-25 13:26:13,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:26:13,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:26:13,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:26:13,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:26:13,355 INFO L87 Difference]: Start difference. First operand 366 states and 371 transitions. Second operand 13 states. [2020-09-25 13:26:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:26:14,167 INFO L93 Difference]: Finished difference Result 372 states and 377 transitions. [2020-09-25 13:26:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:26:14,168 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 221 [2020-09-25 13:26:14,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:26:14,169 INFO L225 Difference]: With dead ends: 372 [2020-09-25 13:26:14,169 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 13:26:14,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:26:14,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 13:26:14,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 13:26:14,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 13:26:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 13:26:14,171 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 221 [2020-09-25 13:26:14,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:26:14,171 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 13:26:14,171 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:26:14,172 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 13:26:14,172 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 13:26:14,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 13:26:14,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 13:26:15,890 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-09-25 13:26:16,380 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 38 [2020-09-25 13:26:16,513 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2020-09-25 13:26:16,725 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 38 [2020-09-25 13:26:16,924 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 44 [2020-09-25 13:26:17,094 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2020-09-25 13:26:17,397 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 47 [2020-09-25 13:26:17,552 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 27 [2020-09-25 13:26:17,848 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 41