/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 --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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:25:16,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:25:16,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:25:16,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:25:16,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:25:16,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:25:16,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:25:16,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:25:16,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:25:16,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:25:16,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:25:16,953 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:25:16,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:25:16,956 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:25:16,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:25:16,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:25:16,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:25:16,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:25:16,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:25:16,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:25:16,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:25:16,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:25:16,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:25:16,978 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:25:16,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:25:16,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:25:16,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:25:16,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:25:16,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:25:16,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:25:17,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:25:17,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:25:17,003 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:25:17,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:25:17,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:25:17,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:25:17,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:25:17,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:25:17,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:25:17,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:25:17,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:25:17,011 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 [2020-09-21 12:25:17,055 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:25:17,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:25:17,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:25:17,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:25:17,058 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:25:17,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:25:17,058 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:25:17,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:25:17,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:25:17,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:25:17,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:25:17,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:25:17,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:25:17,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:25:17,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:25:17,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:25:17,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:25:17,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:25:17,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:25:17,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:25:17,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:25:17,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:25:17,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:25:17,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:25:17,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:25:17,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:25:17,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:25:17,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:25:17,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:25:17,064 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.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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:25:17,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:25:17,540 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:25:17,544 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:25:17,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:25:17,547 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:25:17,548 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-09-21 12:25:17,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26b31b986/f9a0592999804a14896e639acf57bb3b/FLAGc1d5fef99 [2020-09-21 12:25:18,262 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:25:18,263 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-09-21 12:25:18,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26b31b986/f9a0592999804a14896e639acf57bb3b/FLAGc1d5fef99 [2020-09-21 12:25:18,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/26b31b986/f9a0592999804a14896e639acf57bb3b [2020-09-21 12:25:18,565 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:25:18,572 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:25:18,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:18,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:25:18,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:25:18,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:18" (1/1) ... [2020-09-21 12:25:18,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a3fe00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:18, skipping insertion in model container [2020-09-21 12:25:18,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:25:18" (1/1) ... [2020-09-21 12:25:18,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:25:18,669 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:25:18,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:18,987 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:25:19,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:25:19,234 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:25:19,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:19 WrapperNode [2020-09-21 12:25:19,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:25:19,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:25:19,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:25:19,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:25:19,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:19" (1/1) ... [2020-09-21 12:25:19,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:19" (1/1) ... [2020-09-21 12:25:19,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:19" (1/1) ... [2020-09-21 12:25:19,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:19" (1/1) ... [2020-09-21 12:25:19,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:19" (1/1) ... [2020-09-21 12:25:19,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:19" (1/1) ... [2020-09-21 12:25:19,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:19" (1/1) ... [2020-09-21 12:25:19,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:25:19,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:25:19,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:25:19,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:25:19,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:19" (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 [2020-09-21 12:25:19,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:25:19,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:25:19,399 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-09-21 12:25:19,399 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-09-21 12:25:19,399 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-09-21 12:25:19,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:25:19,399 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-09-21 12:25:19,400 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-09-21 12:25:19,400 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-09-21 12:25:19,400 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-09-21 12:25:19,400 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-09-21 12:25:19,400 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-09-21 12:25:19,401 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-09-21 12:25:19,401 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-09-21 12:25:19,401 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-09-21 12:25:19,401 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-09-21 12:25:19,401 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-09-21 12:25:19,402 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-09-21 12:25:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:25:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-21 12:25:19,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:25:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-21 12:25:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-09-21 12:25:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-09-21 12:25:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-09-21 12:25:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-09-21 12:25:19,403 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-09-21 12:25:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-09-21 12:25:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-09-21 12:25:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-09-21 12:25:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-09-21 12:25:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-09-21 12:25:19,404 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-09-21 12:25:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-09-21 12:25:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-09-21 12:25:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-09-21 12:25:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:25:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-09-21 12:25:19,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:25:19,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:25:19,711 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-21 12:25:19,779 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-09-21 12:25:19,780 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-09-21 12:25:19,806 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-21 12:25:19,953 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-09-21 12:25:19,953 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-09-21 12:25:19,955 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-21 12:25:20,006 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-09-21 12:25:20,007 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-09-21 12:25:20,014 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-21 12:25:20,057 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-09-21 12:25:20,058 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-09-21 12:25:20,192 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-21 12:25:20,217 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-09-21 12:25:20,218 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-09-21 12:25:20,244 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-21 12:25:20,343 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-09-21 12:25:20,343 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-09-21 12:25:20,364 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:25:20,364 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:25:20,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:20 BoogieIcfgContainer [2020-09-21 12:25:20,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:25:20,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:25:20,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:25:20,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:25:20,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:25:18" (1/3) ... [2020-09-21 12:25:20,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6146a935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:20, skipping insertion in model container [2020-09-21 12:25:20,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:25:19" (2/3) ... [2020-09-21 12:25:20,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6146a935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:25:20, skipping insertion in model container [2020-09-21 12:25:20,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:25:20" (3/3) ... [2020-09-21 12:25:20,389 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-09-21 12:25:20,402 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:25:20,413 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:25:20,437 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:25:20,471 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:25:20,471 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:25:20,472 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:25:20,472 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:25:20,472 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:25:20,472 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:25:20,472 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:25:20,473 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:25:20,502 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-09-21 12:25:20,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 12:25:20,511 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:20,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:20,513 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:20,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:20,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-09-21 12:25:20,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:20,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833967813] [2020-09-21 12:25:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:20,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:21,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:21,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:21,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:21,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:21,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:21,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:25:21,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:25:21,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-21 12:25:21,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-21 12:25:21,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:25:21,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:25:21,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:21,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:21,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:21,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:21,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:21,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:25:21,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:21,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:21,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:21,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:22,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:22,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:22,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:22,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:22,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:22,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:22,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-21 12:25:22,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-21 12:25:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:22,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833967813] [2020-09-21 12:25:22,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:22,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:25:22,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392511722] [2020-09-21 12:25:22,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:25:22,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:22,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:25:22,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:25:22,094 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 5 states. [2020-09-21 12:25:23,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:23,225 INFO L93 Difference]: Finished difference Result 411 states and 618 transitions. [2020-09-21 12:25:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:25:23,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-21 12:25:23,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:23,259 INFO L225 Difference]: With dead ends: 411 [2020-09-21 12:25:23,259 INFO L226 Difference]: Without dead ends: 255 [2020-09-21 12:25:23,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:25:23,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-09-21 12:25:23,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 227. [2020-09-21 12:25:23,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-21 12:25:23,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 320 transitions. [2020-09-21 12:25:23,428 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 320 transitions. Word has length 20 [2020-09-21 12:25:23,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:23,428 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 320 transitions. [2020-09-21 12:25:23,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:25:23,429 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 320 transitions. [2020-09-21 12:25:23,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 12:25:23,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:23,430 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] [2020-09-21 12:25:23,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:25:23,431 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:23,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:23,431 INFO L82 PathProgramCache]: Analyzing trace with hash -644175699, now seen corresponding path program 1 times [2020-09-21 12:25:23,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:23,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136477357] [2020-09-21 12:25:23,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:23,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:23,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:23,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:23,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-21 12:25:23,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:25:23,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-09-21 12:25:23,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:23,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 12:25:23,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:25:23,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:23,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:23,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:23,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:23,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:23,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:25:23,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:23,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:23,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:23,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:23,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:23,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:23,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:23,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:25:23,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:23,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:23,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:25:23,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:23,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136477357] [2020-09-21 12:25:23,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:23,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:25:23,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902162839] [2020-09-21 12:25:23,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:25:23,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:23,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:25:23,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:25:23,974 INFO L87 Difference]: Start difference. First operand 227 states and 320 transitions. Second operand 5 states. [2020-09-21 12:25:24,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:24,867 INFO L93 Difference]: Finished difference Result 268 states and 375 transitions. [2020-09-21 12:25:24,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:25:24,868 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-21 12:25:24,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:24,871 INFO L225 Difference]: With dead ends: 268 [2020-09-21 12:25:24,872 INFO L226 Difference]: Without dead ends: 255 [2020-09-21 12:25:24,873 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:25:24,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-09-21 12:25:24,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 227. [2020-09-21 12:25:24,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-09-21 12:25:24,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 319 transitions. [2020-09-21 12:25:24,903 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 319 transitions. Word has length 21 [2020-09-21 12:25:24,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:24,903 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 319 transitions. [2020-09-21 12:25:24,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:25:24,903 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 319 transitions. [2020-09-21 12:25:24,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 12:25:24,905 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:24,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:24,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:25:24,905 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:24,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:24,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-09-21 12:25:24,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:24,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301414703] [2020-09-21 12:25:24,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:24,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:24,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:25,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:25:25,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:25,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-09-21 12:25:25,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:25:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 12:25:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:25:25,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:25,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:25,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:25,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:25,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:25,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:25:25,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:25,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:25,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:25,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:25,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:25,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:25,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:25,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:25,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:25:25,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:25,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:25,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:25,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:25,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:25,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:25,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:25,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:25,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:25:25,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:25:25,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:25,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301414703] [2020-09-21 12:25:25,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:25,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:25:25,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027611918] [2020-09-21 12:25:25,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:25:25,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:25,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:25:25,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:25:25,597 INFO L87 Difference]: Start difference. First operand 227 states and 319 transitions. Second operand 6 states. [2020-09-21 12:25:26,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:26,939 INFO L93 Difference]: Finished difference Result 398 states and 544 transitions. [2020-09-21 12:25:26,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:25:26,941 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-21 12:25:26,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:26,945 INFO L225 Difference]: With dead ends: 398 [2020-09-21 12:25:26,945 INFO L226 Difference]: Without dead ends: 342 [2020-09-21 12:25:26,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:25:26,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-09-21 12:25:26,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 273. [2020-09-21 12:25:26,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-09-21 12:25:26,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 379 transitions. [2020-09-21 12:25:26,981 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 379 transitions. Word has length 28 [2020-09-21 12:25:26,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:26,981 INFO L479 AbstractCegarLoop]: Abstraction has 273 states and 379 transitions. [2020-09-21 12:25:26,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:25:26,982 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 379 transitions. [2020-09-21 12:25:26,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-21 12:25:26,983 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:26,983 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:26,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:25:26,984 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:26,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:26,984 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-09-21 12:25:26,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:26,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798993684] [2020-09-21 12:25:26,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:27,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:27,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:27,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 12:25:27,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:27,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-09-21 12:25:27,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:27,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-21 12:25:27,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:25:27,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:27,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:27,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:27,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:27,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:27,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:27,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:25:27,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:27,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:27,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:27,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:27,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:27,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:27,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:27,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:27,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:27,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:25:27,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:27,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:27,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:27,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:27,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:27,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:27,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:27,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:27,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:25:27,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:25:27,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:27,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798993684] [2020-09-21 12:25:27,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:27,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:25:27,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920862493] [2020-09-21 12:25:27,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:25:27,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:27,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:25:27,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:25:27,499 INFO L87 Difference]: Start difference. First operand 273 states and 379 transitions. Second operand 6 states. [2020-09-21 12:25:28,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:28,403 INFO L93 Difference]: Finished difference Result 421 states and 568 transitions. [2020-09-21 12:25:28,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:25:28,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-21 12:25:28,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:28,409 INFO L225 Difference]: With dead ends: 421 [2020-09-21 12:25:28,409 INFO L226 Difference]: Without dead ends: 333 [2020-09-21 12:25:28,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:25:28,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-09-21 12:25:28,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 313. [2020-09-21 12:25:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-09-21 12:25:28,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 430 transitions. [2020-09-21 12:25:28,445 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 430 transitions. Word has length 28 [2020-09-21 12:25:28,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:28,445 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 430 transitions. [2020-09-21 12:25:28,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:25:28,446 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 430 transitions. [2020-09-21 12:25:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 12:25:28,449 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:28,449 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] [2020-09-21 12:25:28,449 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:25:28,449 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:28,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:28,450 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-09-21 12:25:28,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:28,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1186851887] [2020-09-21 12:25:28,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:28,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:28,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:28,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-21 12:25:28,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:28,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-09-21 12:25:28,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-21 12:25:28,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 12:25:28,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:28,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:28,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:28,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:28,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:28,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:28,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:25:28,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:28,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:28,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:28,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:28,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:28,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:28,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:28,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:25:28,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:28,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:28,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:28,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:28,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:28,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:28,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:28,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:28,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:28,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:28,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:28,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:28,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:28,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:28,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:28,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1186851887] [2020-09-21 12:25:28,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:28,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 12:25:28,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458521326] [2020-09-21 12:25:28,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:25:28,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:28,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:25:28,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:25:28,960 INFO L87 Difference]: Start difference. First operand 313 states and 430 transitions. Second operand 6 states. [2020-09-21 12:25:29,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:29,823 INFO L93 Difference]: Finished difference Result 316 states and 432 transitions. [2020-09-21 12:25:29,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:25:29,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-21 12:25:29,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:29,826 INFO L225 Difference]: With dead ends: 316 [2020-09-21 12:25:29,827 INFO L226 Difference]: Without dead ends: 312 [2020-09-21 12:25:29,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:25:29,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-21 12:25:29,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2020-09-21 12:25:29,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-09-21 12:25:29,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 427 transitions. [2020-09-21 12:25:29,862 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 427 transitions. Word has length 38 [2020-09-21 12:25:29,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:29,862 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 427 transitions. [2020-09-21 12:25:29,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:25:29,863 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 427 transitions. [2020-09-21 12:25:29,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:25:29,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:29,867 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] [2020-09-21 12:25:29,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:25:29,867 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:29,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:29,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-09-21 12:25:29,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:29,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537545109] [2020-09-21 12:25:29,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:29,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:29,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:30,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:30,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:30,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-21 12:25:30,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:25:30,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:25:30,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:30,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:30,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-21 12:25:30,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:30,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:30,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:30,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:30,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:30,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:30,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:25:30,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:30,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:30,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:30,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:30,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:31,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:31,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:31,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:31,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:31,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:31,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:25:31,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:31,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:31,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:31,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:31,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:31,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:31,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:31,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:31,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:25:31,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:31,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:31,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:31,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:31,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:31,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 12:25:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:31,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:31,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:31,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:25:31,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:31,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:25:31,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:31,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:31,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:25:31,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:31,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:31,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537545109] [2020-09-21 12:25:31,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:31,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:25:31,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554944204] [2020-09-21 12:25:31,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:25:31,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:31,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:25:31,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:25:31,141 INFO L87 Difference]: Start difference. First operand 312 states and 427 transitions. Second operand 8 states. [2020-09-21 12:25:32,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:32,492 INFO L93 Difference]: Finished difference Result 355 states and 470 transitions. [2020-09-21 12:25:32,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:25:32,492 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-09-21 12:25:32,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:32,497 INFO L225 Difference]: With dead ends: 355 [2020-09-21 12:25:32,497 INFO L226 Difference]: Without dead ends: 290 [2020-09-21 12:25:32,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:25:32,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-09-21 12:25:32,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 270. [2020-09-21 12:25:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-09-21 12:25:32,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 364 transitions. [2020-09-21 12:25:32,537 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 364 transitions. Word has length 46 [2020-09-21 12:25:32,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:32,537 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 364 transitions. [2020-09-21 12:25:32,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:25:32,537 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 364 transitions. [2020-09-21 12:25:32,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-21 12:25:32,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:32,541 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] [2020-09-21 12:25:32,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:25:32,541 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:32,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:32,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-09-21 12:25:32,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:32,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200281504] [2020-09-21 12:25:32,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:32,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:32,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:32,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:33,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:33,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-21 12:25:33,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:33,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-09-21 12:25:33,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:33,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:33,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-21 12:25:33,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:25:33,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:33,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:33,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:33,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:33,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:33,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:33,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:25:33,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:33,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:33,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:33,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:33,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:33,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:33,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:33,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:33,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:25:33,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:33,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:33,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:33,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:33,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:33,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:33,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:33,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:33,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:33,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:33,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:33,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:33,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:33,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:33,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:33,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:33,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:25:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:33,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:33,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:33,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 12:25:33,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:33,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-21 12:25:33,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:33,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:33,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:33,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 12:25:33,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:33,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-21 12:25:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:33,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:33,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:33,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:25:33,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:33,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:25:33,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:33,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-21 12:25:33,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:33,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:33,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200281504] [2020-09-21 12:25:33,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:33,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:25:33,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22362180] [2020-09-21 12:25:33,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:25:33,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:33,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:25:33,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:25:33,410 INFO L87 Difference]: Start difference. First operand 270 states and 364 transitions. Second operand 8 states. [2020-09-21 12:25:34,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:34,401 INFO L93 Difference]: Finished difference Result 290 states and 385 transitions. [2020-09-21 12:25:34,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:25:34,401 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-09-21 12:25:34,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:34,403 INFO L225 Difference]: With dead ends: 290 [2020-09-21 12:25:34,404 INFO L226 Difference]: Without dead ends: 242 [2020-09-21 12:25:34,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:25:34,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-21 12:25:34,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-09-21 12:25:34,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-09-21 12:25:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2020-09-21 12:25:34,428 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 46 [2020-09-21 12:25:34,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:34,429 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2020-09-21 12:25:34,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:25:34,429 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2020-09-21 12:25:34,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 12:25:34,432 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:34,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:34,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:25:34,433 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:34,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:34,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-09-21 12:25:34,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:34,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9194258] [2020-09-21 12:25:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:34,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:34,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-21 12:25:34,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:34,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-21 12:25:34,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:34,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:34,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-21 12:25:34,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:25:34,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:34,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:34,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:34,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:34,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:34,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:34,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:25:34,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:34,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:34,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:34,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:34,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:34,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:34,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:34,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:34,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:25:34,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:34,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:34,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:34,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:34,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:34,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:34,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:34,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:34,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:34,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:34,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:34,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:34,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:34,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:34,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:34,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:34,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-21 12:25:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:34,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:34,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:34,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:25:34,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:34,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:25:34,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:34,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:34,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:34,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:25:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:34,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:34,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:34,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:34,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:34,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:34,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:34,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:34,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 12:25:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:34,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:34,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:34,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:34,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:34,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:25:34,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:34,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:25:34,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:34,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:34,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9194258] [2020-09-21 12:25:34,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:34,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:25:34,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924138112] [2020-09-21 12:25:34,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:25:34,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:34,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:25:34,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:25:34,890 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand 8 states. [2020-09-21 12:25:35,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:35,886 INFO L93 Difference]: Finished difference Result 270 states and 354 transitions. [2020-09-21 12:25:35,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:25:35,886 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-09-21 12:25:35,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:35,889 INFO L225 Difference]: With dead ends: 270 [2020-09-21 12:25:35,889 INFO L226 Difference]: Without dead ends: 240 [2020-09-21 12:25:35,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-09-21 12:25:35,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-09-21 12:25:35,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2020-09-21 12:25:35,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-09-21 12:25:35,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 317 transitions. [2020-09-21 12:25:35,914 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 317 transitions. Word has length 53 [2020-09-21 12:25:35,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:35,915 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 317 transitions. [2020-09-21 12:25:35,915 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:25:35,916 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 317 transitions. [2020-09-21 12:25:35,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-21 12:25:35,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:35,918 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] [2020-09-21 12:25:35,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:25:35,918 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:35,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:35,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-09-21 12:25:35,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:35,919 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637535509] [2020-09-21 12:25:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:35,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:36,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:36,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-21 12:25:36,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:25:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-09-21 12:25:36,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:25:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:25:36,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:25:36,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:37,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:37,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:37,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:37,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:37,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:37,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:37,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:37,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:37,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:37,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:37,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:37,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:37,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:37,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:25:37,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:37,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:37,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:37,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:25:37,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:37,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:37,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:37,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:37,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:37,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:25:37,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:37,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:37,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:37,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:25:37,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:37,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 12:25:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:37,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:37,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:37,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:37,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-21 12:25:37,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:37,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:25:37,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:37,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-21 12:25:37,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:37,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:37,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:37,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:37,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:25:37,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:37,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:25:37,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:37,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:37,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:37,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:25:37,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:37,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:37,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637535509] [2020-09-21 12:25:37,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:37,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 12:25:37,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112944484] [2020-09-21 12:25:37,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:25:37,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:37,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:25:37,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:25:37,361 INFO L87 Difference]: Start difference. First operand 240 states and 317 transitions. Second operand 10 states. [2020-09-21 12:25:38,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:38,646 INFO L93 Difference]: Finished difference Result 313 states and 400 transitions. [2020-09-21 12:25:38,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:25:38,646 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-09-21 12:25:38,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:38,650 INFO L225 Difference]: With dead ends: 313 [2020-09-21 12:25:38,650 INFO L226 Difference]: Without dead ends: 307 [2020-09-21 12:25:38,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:25:38,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2020-09-21 12:25:38,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 274. [2020-09-21 12:25:38,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-09-21 12:25:38,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 356 transitions. [2020-09-21 12:25:38,682 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 356 transitions. Word has length 51 [2020-09-21 12:25:38,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:38,683 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 356 transitions. [2020-09-21 12:25:38,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:25:38,683 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 356 transitions. [2020-09-21 12:25:38,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 12:25:38,685 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:38,685 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] [2020-09-21 12:25:38,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:25:38,686 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:38,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:38,686 INFO L82 PathProgramCache]: Analyzing trace with hash -855964733, now seen corresponding path program 1 times [2020-09-21 12:25:38,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:38,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386789417] [2020-09-21 12:25:38,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:38,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:38,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:39,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-21 12:25:39,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:39,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1022 [2020-09-21 12:25:39,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:25:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:25:39,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-21 12:25:39,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:39,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:39,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:39,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:39,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:39,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:25:39,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:39,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:39,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:39,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:39,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:39,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:39,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:39,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:39,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:25:39,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:39,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:39,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:39,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:25:39,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:39,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:39,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:39,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:39,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:39,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:39,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:25:39,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:39,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:39,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:39,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:25:39,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:40,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 12:25:40,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:40,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:40,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:40,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:40,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-09-21 12:25:40,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:25:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:25:40,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:25:40,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:40,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:40,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:40,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:40,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:40,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-21 12:25:40,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:40,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:25:40,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:40,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:25:40,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:25:40,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:25:40,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:40,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:40,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386789417] [2020-09-21 12:25:40,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:40,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 12:25:40,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513476784] [2020-09-21 12:25:40,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 12:25:40,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:40,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 12:25:40,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:25:40,208 INFO L87 Difference]: Start difference. First operand 274 states and 356 transitions. Second operand 12 states. [2020-09-21 12:25:40,403 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-09-21 12:25:41,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:41,753 INFO L93 Difference]: Finished difference Result 284 states and 364 transitions. [2020-09-21 12:25:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 12:25:41,758 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-21 12:25:41,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:41,760 INFO L225 Difference]: With dead ends: 284 [2020-09-21 12:25:41,760 INFO L226 Difference]: Without dead ends: 243 [2020-09-21 12:25:41,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-09-21 12:25:41,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-09-21 12:25:41,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 240. [2020-09-21 12:25:41,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-09-21 12:25:41,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 315 transitions. [2020-09-21 12:25:41,781 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 315 transitions. Word has length 52 [2020-09-21 12:25:41,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:41,781 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 315 transitions. [2020-09-21 12:25:41,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 12:25:41,781 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 315 transitions. [2020-09-21 12:25:41,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 12:25:41,783 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:41,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:41,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:25:41,783 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:41,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:41,784 INFO L82 PathProgramCache]: Analyzing trace with hash 240184037, now seen corresponding path program 1 times [2020-09-21 12:25:41,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:41,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515532766] [2020-09-21 12:25:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:41,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:42,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-21 12:25:42,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:42,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-09-21 12:25:42,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:42,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-21 12:25:42,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-21 12:25:42,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:42,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:42,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:42,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:42,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:42,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:42,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:25:42,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:42,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:42,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:42,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:42,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:42,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:42,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:42,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:25:42,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:42,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:42,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:42,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:42,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:42,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:42,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:42,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:42,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:42,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:42,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:42,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 12:25:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:42,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:42,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:25:42,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:42,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-21 12:25:42,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:25:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:42,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-21 12:25:42,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:42,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:42,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:42,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:42,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:42,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:25:42,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:42,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:25:42,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:42,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:42,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:42,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:25:42,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:42,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515532766] [2020-09-21 12:25:42,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:42,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 12:25:42,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548334744] [2020-09-21 12:25:42,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 12:25:42,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:42,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 12:25:42,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:25:42,795 INFO L87 Difference]: Start difference. First operand 240 states and 315 transitions. Second operand 12 states. [2020-09-21 12:25:44,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:44,128 INFO L93 Difference]: Finished difference Result 252 states and 327 transitions. [2020-09-21 12:25:44,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 12:25:44,128 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-21 12:25:44,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:44,130 INFO L225 Difference]: With dead ends: 252 [2020-09-21 12:25:44,130 INFO L226 Difference]: Without dead ends: 211 [2020-09-21 12:25:44,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:25:44,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-09-21 12:25:44,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2020-09-21 12:25:44,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-21 12:25:44,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 276 transitions. [2020-09-21 12:25:44,151 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 276 transitions. Word has length 53 [2020-09-21 12:25:44,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:44,151 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 276 transitions. [2020-09-21 12:25:44,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 12:25:44,151 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 276 transitions. [2020-09-21 12:25:44,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-21 12:25:44,153 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:44,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:44,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:25:44,153 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:44,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:44,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1569125, now seen corresponding path program 1 times [2020-09-21 12:25:44,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:44,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854777818] [2020-09-21 12:25:44,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:44,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:44,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-21 12:25:44,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:44,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 636 [2020-09-21 12:25:44,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:44,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:25:44,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-09-21 12:25:44,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:25:44,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:44,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:44,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:44,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:44,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:44,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:44,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:25:44,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:44,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:44,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:44,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:44,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:44,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:44,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:44,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:44,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:25:44,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:44,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:44,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:44,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:45,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:45,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:45,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:45,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:45,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:45,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:45,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:45,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:25:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:45,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:45,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:45,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:25:45,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:45,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-21 12:25:45,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:45,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:45,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:25:45,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:45,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:45,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:45,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:45,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:25:45,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:45,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:25:45,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:45,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:45,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:45,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:25:45,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:45,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:45,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854777818] [2020-09-21 12:25:45,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:45,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-21 12:25:45,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926910581] [2020-09-21 12:25:45,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-21 12:25:45,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:45,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-21 12:25:45,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:25:45,337 INFO L87 Difference]: Start difference. First operand 211 states and 276 transitions. Second operand 14 states. [2020-09-21 12:25:46,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:46,665 INFO L93 Difference]: Finished difference Result 227 states and 292 transitions. [2020-09-21 12:25:46,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:25:46,666 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-09-21 12:25:46,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:46,667 INFO L225 Difference]: With dead ends: 227 [2020-09-21 12:25:46,668 INFO L226 Difference]: Without dead ends: 206 [2020-09-21 12:25:46,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:25:46,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-09-21 12:25:46,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-09-21 12:25:46,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-09-21 12:25:46,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 269 transitions. [2020-09-21 12:25:46,690 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 269 transitions. Word has length 54 [2020-09-21 12:25:46,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:46,690 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 269 transitions. [2020-09-21 12:25:46,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-21 12:25:46,691 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 269 transitions. [2020-09-21 12:25:46,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:25:46,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:46,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:46,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:25:46,692 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:46,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:46,693 INFO L82 PathProgramCache]: Analyzing trace with hash -1204113239, now seen corresponding path program 1 times [2020-09-21 12:25:46,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:46,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279380212] [2020-09-21 12:25:46,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:46,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:46,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:46,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:47,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:47,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-21 12:25:47,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:47,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-21 12:25:47,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-21 12:25:47,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:25:47,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:47,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:47,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:47,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:47,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:47,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:25:47,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:47,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:47,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:47,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:47,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:47,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:47,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:47,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:47,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:47,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:47,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:25:47,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:47,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:47,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:47,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:47,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:47,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:47,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:47,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:47,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:47,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:47,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:47,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:47,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:47,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:47,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 12:25:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:47,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:47,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:48,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 12:25:48,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:48,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-21 12:25:48,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:48,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:48,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 12:25:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:25:48,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:48,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 12:25:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:48,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:48,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:48,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-21 12:25:48,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:48,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:25:48,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:25:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:48,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:25:48,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:48,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:25:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:48,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:48,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:48,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:48,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:48,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:25:48,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:48,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:48,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:48,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:48,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:48,174 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279380212] [2020-09-21 12:25:48,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:48,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 12:25:48,175 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971434752] [2020-09-21 12:25:48,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:25:48,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:48,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:25:48,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:25:48,176 INFO L87 Difference]: Start difference. First operand 206 states and 269 transitions. Second operand 10 states. [2020-09-21 12:25:48,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:48,859 INFO L93 Difference]: Finished difference Result 234 states and 302 transitions. [2020-09-21 12:25:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:25:48,860 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-09-21 12:25:48,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:48,861 INFO L225 Difference]: With dead ends: 234 [2020-09-21 12:25:48,861 INFO L226 Difference]: Without dead ends: 199 [2020-09-21 12:25:48,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:25:48,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-09-21 12:25:48,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 199. [2020-09-21 12:25:48,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-09-21 12:25:48,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 259 transitions. [2020-09-21 12:25:48,883 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 259 transitions. Word has length 57 [2020-09-21 12:25:48,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:48,884 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 259 transitions. [2020-09-21 12:25:48,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:25:48,885 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 259 transitions. [2020-09-21 12:25:48,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-21 12:25:48,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:48,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:48,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 12:25:48,888 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:48,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:48,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1045578754, now seen corresponding path program 1 times [2020-09-21 12:25:48,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:48,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [446554039] [2020-09-21 12:25:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:48,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:49,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:49,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:49,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-21 12:25:49,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:25:49,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-21 12:25:49,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:49,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:49,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-21 12:25:49,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:25:49,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:50,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:25:50,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:50,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:50,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:25:50,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:50,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:50,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:50,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:50,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:50,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:25:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 12:25:50,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-21 12:25:50,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:25:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-21 12:25:50,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:25:50,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-21 12:25:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:50,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:25:50,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:50,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:25:50,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:50,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:25:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:50,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:50,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:50,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:25:50,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:50,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:25:50,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:50,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:50,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:50,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:50,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:50,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [446554039] [2020-09-21 12:25:50,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:50,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:25:50,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449793199] [2020-09-21 12:25:50,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:25:50,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:50,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:25:50,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:25:50,293 INFO L87 Difference]: Start difference. First operand 199 states and 259 transitions. Second operand 8 states. [2020-09-21 12:25:51,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:51,035 INFO L93 Difference]: Finished difference Result 239 states and 303 transitions. [2020-09-21 12:25:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:25:51,035 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 60 [2020-09-21 12:25:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:51,038 INFO L225 Difference]: With dead ends: 239 [2020-09-21 12:25:51,038 INFO L226 Difference]: Without dead ends: 198 [2020-09-21 12:25:51,039 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:25:51,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-09-21 12:25:51,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-09-21 12:25:51,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-21 12:25:51,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 254 transitions. [2020-09-21 12:25:51,055 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 254 transitions. Word has length 60 [2020-09-21 12:25:51,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:51,055 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 254 transitions. [2020-09-21 12:25:51,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:25:51,056 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 254 transitions. [2020-09-21 12:25:51,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 12:25:51,057 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:51,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:51,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 12:25:51,057 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:51,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:51,058 INFO L82 PathProgramCache]: Analyzing trace with hash -930292561, now seen corresponding path program 1 times [2020-09-21 12:25:51,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:51,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120534496] [2020-09-21 12:25:51,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-21 12:25:51,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:51,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-09-21 12:25:51,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:25:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-21 12:25:51,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 12:25:51,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:51,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:51,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:51,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:25:51,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:51,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:51,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:51,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:51,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:51,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:51,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:51,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:51,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:25:51,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:51,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:51,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:51,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:51,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:52,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:52,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:52,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:52,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:52,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:52,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:52,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:52,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:52,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:52,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:25:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:52,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:52,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-21 12:25:52,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:52,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-09-21 12:25:52,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:25:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:52,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-21 12:25:52,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:52,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:25:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:52,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:52,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:52,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:52,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-21 12:25:52,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:25:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:52,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:25:52,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:52,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:25:52,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:52,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:52,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:52,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:25:52,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:52,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:25:52,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:25:52,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:52,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120534496] [2020-09-21 12:25:52,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:52,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-21 12:25:52,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876723104] [2020-09-21 12:25:52,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 12:25:52,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:52,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 12:25:52,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:25:52,532 INFO L87 Difference]: Start difference. First operand 198 states and 254 transitions. Second operand 15 states. [2020-09-21 12:25:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:53,952 INFO L93 Difference]: Finished difference Result 210 states and 266 transitions. [2020-09-21 12:25:53,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:25:53,956 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 61 [2020-09-21 12:25:53,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:53,957 INFO L225 Difference]: With dead ends: 210 [2020-09-21 12:25:53,958 INFO L226 Difference]: Without dead ends: 172 [2020-09-21 12:25:53,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:25:53,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-21 12:25:53,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-09-21 12:25:53,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-21 12:25:53,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 216 transitions. [2020-09-21 12:25:53,973 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 216 transitions. Word has length 61 [2020-09-21 12:25:53,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:53,973 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 216 transitions. [2020-09-21 12:25:53,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-21 12:25:53,974 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 216 transitions. [2020-09-21 12:25:53,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-21 12:25:53,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:53,975 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] [2020-09-21 12:25:53,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 12:25:53,975 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:53,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:53,976 INFO L82 PathProgramCache]: Analyzing trace with hash 1127735086, now seen corresponding path program 1 times [2020-09-21 12:25:53,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:53,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1656590535] [2020-09-21 12:25:53,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:54,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:54,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:54,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:54,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:25:54,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-09-21 12:25:54,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:25:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-21 12:25:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 12:25:54,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:54,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:54,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:54,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:54,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:54,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:54,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:25:54,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:54,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:54,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:54,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:54,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:54,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:54,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:54,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:54,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:54,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:54,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:25:54,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:54,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:54,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:54,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:54,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:54,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:54,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:54,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:54,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:54,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:54,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:54,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:25:54,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:54,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:54,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:54,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:54,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:54,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 12:25:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:54,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:55,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:55,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-21 12:25:55,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:55,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-21 12:25:55,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:55,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:25:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:55,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:25:55,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:55,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-21 12:25:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:55,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:55,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:55,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:25:55,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:55,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-21 12:25:55,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:55,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:25:55,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:55,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:25:55,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:55,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:25:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:55,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:55,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:55,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:25:55,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:55,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-21 12:25:55,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:25:55,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:55,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1656590535] [2020-09-21 12:25:55,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:55,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-21 12:25:55,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224849157] [2020-09-21 12:25:55,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 12:25:55,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:55,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 12:25:55,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:25:55,295 INFO L87 Difference]: Start difference. First operand 172 states and 216 transitions. Second operand 15 states. [2020-09-21 12:25:56,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:56,214 INFO L93 Difference]: Finished difference Result 184 states and 228 transitions. [2020-09-21 12:25:56,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:25:56,215 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-21 12:25:56,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:56,217 INFO L225 Difference]: With dead ends: 184 [2020-09-21 12:25:56,217 INFO L226 Difference]: Without dead ends: 170 [2020-09-21 12:25:56,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:25:56,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-09-21 12:25:56,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-09-21 12:25:56,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-09-21 12:25:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 212 transitions. [2020-09-21 12:25:56,234 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 212 transitions. Word has length 56 [2020-09-21 12:25:56,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:56,234 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 212 transitions. [2020-09-21 12:25:56,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-21 12:25:56,234 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 212 transitions. [2020-09-21 12:25:56,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-21 12:25:56,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:56,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:56,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 12:25:56,236 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:56,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:56,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1554463583, now seen corresponding path program 1 times [2020-09-21 12:25:56,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:56,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [374970192] [2020-09-21 12:25:56,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:56,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:56,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:56,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:25:56,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:56,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-09-21 12:25:56,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:56,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-21 12:25:56,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-21 12:25:56,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:56,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:56,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:56,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:56,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:56,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:25:56,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:56,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:56,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:56,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:56,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:56,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:56,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:56,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:56,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:25:56,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:56,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:56,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:56,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:56,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:56,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:56,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:56,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:56,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:56,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:25:56,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:56,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:56,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:56,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:56,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:25:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:56,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:57,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:57,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:25:57,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-21 12:25:57,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:25:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:57,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:25:57,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:57,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 12:25:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:57,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:57,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:57,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:25:57,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:57,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 12:25:57,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:25:57,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:57,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:25:57,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:57,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:57,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [374970192] [2020-09-21 12:25:57,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:57,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-21 12:25:57,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862058701] [2020-09-21 12:25:57,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-21 12:25:57,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:57,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-21 12:25:57,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-09-21 12:25:57,174 INFO L87 Difference]: Start difference. First operand 170 states and 212 transitions. Second operand 13 states. [2020-09-21 12:25:58,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:25:58,688 INFO L93 Difference]: Finished difference Result 309 states and 373 transitions. [2020-09-21 12:25:58,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-21 12:25:58,688 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-09-21 12:25:58,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:25:58,690 INFO L225 Difference]: With dead ends: 309 [2020-09-21 12:25:58,690 INFO L226 Difference]: Without dead ends: 241 [2020-09-21 12:25:58,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2020-09-21 12:25:58,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-21 12:25:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 180. [2020-09-21 12:25:58,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-09-21 12:25:58,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 225 transitions. [2020-09-21 12:25:58,707 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 225 transitions. Word has length 55 [2020-09-21 12:25:58,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:25:58,708 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 225 transitions. [2020-09-21 12:25:58,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-21 12:25:58,708 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 225 transitions. [2020-09-21 12:25:58,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-21 12:25:58,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:25:58,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:25:58,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-21 12:25:58,709 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:25:58,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:25:58,710 INFO L82 PathProgramCache]: Analyzing trace with hash -725184292, now seen corresponding path program 1 times [2020-09-21 12:25:58,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:25:58,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124014361] [2020-09-21 12:25:58,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:25:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:58,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:59,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-21 12:25:59,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:59,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-09-21 12:25:59,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:25:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-21 12:25:59,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-21 12:25:59,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:59,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:25:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:59,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:59,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:59,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:59,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:25:59,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:59,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:59,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:59,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:25:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:59,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:59,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:59,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:59,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:25:59,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:59,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:59,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:59,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 12:25:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:59,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:59,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:25:59,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:59,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:25:59,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:59,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:25:59,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:59,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:25:59,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:59,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-21 12:25:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:59,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:59,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-21 12:25:59,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:59,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-21 12:25:59,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:25:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:59,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-21 12:25:59,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:25:59,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-21 12:25:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:25:59,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:25:59,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:25:59,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-21 12:25:59,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:25:59,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:25:59,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:25:59,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:25:59,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:25:59,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 12:25:59,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:25:59,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:25:59,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124014361] [2020-09-21 12:25:59,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:25:59,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-21 12:25:59,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501987827] [2020-09-21 12:25:59,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-21 12:25:59,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:25:59,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-21 12:25:59,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:25:59,754 INFO L87 Difference]: Start difference. First operand 180 states and 225 transitions. Second operand 14 states. [2020-09-21 12:26:00,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:00,747 INFO L93 Difference]: Finished difference Result 196 states and 241 transitions. [2020-09-21 12:26:00,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:26:00,748 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-09-21 12:26:00,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:00,750 INFO L225 Difference]: With dead ends: 196 [2020-09-21 12:26:00,750 INFO L226 Difference]: Without dead ends: 158 [2020-09-21 12:26:00,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-09-21 12:26:00,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-21 12:26:00,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-21 12:26:00,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-21 12:26:00,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 182 transitions. [2020-09-21 12:26:00,766 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 182 transitions. Word has length 55 [2020-09-21 12:26:00,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:00,766 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 182 transitions. [2020-09-21 12:26:00,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-21 12:26:00,767 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 182 transitions. [2020-09-21 12:26:00,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-21 12:26:00,767 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:00,768 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] [2020-09-21 12:26:00,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-21 12:26:00,768 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:00,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:00,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-09-21 12:26:00,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:00,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466572589] [2020-09-21 12:26:00,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:26:00,806 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:26:00,807 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:26:00,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-21 12:26:00,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:26:00 BoogieIcfgContainer [2020-09-21 12:26:00,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:26:00,851 INFO L168 Benchmark]: Toolchain (without parser) took 42284.02 ms. Allocated memory was 140.5 MB in the beginning and 598.2 MB in the end (delta: 457.7 MB). Free memory was 103.0 MB in the beginning and 405.5 MB in the end (delta: -302.4 MB). Peak memory consumption was 155.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:00,852 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:26:00,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.67 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 176.7 MB in the end (delta: -74.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:00,853 INFO L168 Benchmark]: Boogie Preprocessor took 89.73 ms. Allocated memory is still 204.5 MB. Free memory was 176.7 MB in the beginning and 174.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:00,854 INFO L168 Benchmark]: RCFGBuilder took 1045.28 ms. Allocated memory is still 204.5 MB. Free memory was 174.0 MB in the beginning and 102.9 MB in the end (delta: 71.2 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:00,854 INFO L168 Benchmark]: TraceAbstraction took 40475.62 ms. Allocated memory was 204.5 MB in the beginning and 598.2 MB in the end (delta: 393.7 MB). Free memory was 102.2 MB in the beginning and 405.5 MB in the end (delta: -303.3 MB). Peak memory consumption was 90.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:00,857 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.67 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 176.7 MB in the end (delta: -74.4 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.73 ms. Allocated memory is still 204.5 MB. Free memory was 176.7 MB in the beginning and 174.0 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1045.28 ms. Allocated memory is still 204.5 MB. Free memory was 174.0 MB in the beginning and 102.9 MB in the end (delta: 71.2 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 40475.62 ms. Allocated memory was 204.5 MB in the beginning and 598.2 MB in the end (delta: 393.7 MB). Free memory was 102.2 MB in the beginning and 405.5 MB in the end (delta: -303.3 MB). Peak memory consumption was 90.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1011]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int KernelMode ; [L22] int Executive ; [L23] int DevicePowerState ; [L24] int s ; [L25] int UNLOADED ; [L26] int NP ; [L27] int DC ; [L28] int SKIP1 ; [L29] int SKIP2 ; [L30] int MPR1 ; [L31] int MPR3 ; [L32] int IPC ; [L33] int pended ; [L34] int compFptr ; [L35] int compRegistered ; [L36] int lowerDriverReturn ; [L37] int setEventCalled ; [L38] int customIrp ; [L39] int myStatus ; [L292] int status ; [L293] int irp = __VERIFIER_nondet_int() ; [L294] int pirp ; [L295] int pirp__IoStatus__Status ; [L296] int irp_choice = __VERIFIER_nondet_int() ; [L297] int devobj = __VERIFIER_nondet_int() ; [L298] int __cil_tmp8 ; [L300] KernelMode = 0 [L301] Executive = 0 [L302] DevicePowerState = 1 [L303] s = 0 [L304] UNLOADED = 0 [L305] NP = 0 [L306] DC = 0 [L307] SKIP1 = 0 [L308] SKIP2 = 0 [L309] MPR1 = 0 [L310] MPR3 = 0 [L311] IPC = 0 [L312] pended = 0 [L313] compFptr = 0 [L314] compRegistered = 0 [L315] lowerDriverReturn = 0 [L316] setEventCalled = 0 [L317] customIrp = 0 [L318] myStatus = 0 [L322] status = 0 [L323] pirp = irp [L324] CALL _BLAST_init() [L59] UNLOADED = 0 [L60] NP = 1 [L61] DC = 2 [L62] SKIP1 = 3 [L63] SKIP2 = 4 [L64] MPR1 = 5 [L65] MPR3 = 6 [L66] IPC = 7 [L67] s = UNLOADED [L68] pended = 0 [L69] compFptr = 0 [L70] compRegistered = 0 [L71] lowerDriverReturn = 0 [L72] setEventCalled = 0 [L73] customIrp = 0 [L324] RET _BLAST_init() [L326] COND TRUE status >= 0 [L327] s = NP [L328] customIrp = 0 [L329] setEventCalled = customIrp [L330] lowerDriverReturn = setEventCalled [L331] compRegistered = lowerDriverReturn [L332] pended = compRegistered [L333] pirp__IoStatus__Status = 0 [L334] myStatus = 0 [L335] COND FALSE !(irp_choice == 0) [L340] CALL stub_driver_init() [L45] s = NP [L46] pended = 0 [L47] compFptr = 0 [L48] compRegistered = 0 [L49] lowerDriverReturn = 0 [L50] setEventCalled = 0 [L51] customIrp = 0 [L340] RET stub_driver_init() [L343] COND FALSE !(status < 0) [L347] int tmp_ndt_1; [L348] tmp_ndt_1 = __VERIFIER_nondet_int() [L349] COND FALSE !(tmp_ndt_1 == 0) [L352] int tmp_ndt_2; [L353] tmp_ndt_2 = __VERIFIER_nondet_int() [L354] COND FALSE !(tmp_ndt_2 == 1) [L357] int tmp_ndt_3; [L358] tmp_ndt_3 = __VERIFIER_nondet_int() [L359] COND TRUE tmp_ndt_3 == 3 [L386] CALL, EXPR KbFilter_PnP(devobj, pirp) [L78] int devExt ; [L79] int irpStack ; [L80] int status ; [L81] int event = __VERIFIER_nondet_int() ; [L82] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L83] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L84] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L85] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L86] int devExt__Started ; [L87] int devExt__Removed ; [L88] int devExt__SurpriseRemoved ; [L89] int Irp__IoStatus__Status ; [L90] int Irp__IoStatus__Information ; [L91] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L92] int irpSp ; [L93] int nextIrpSp ; [L94] int nextIrpSp__Control ; [L95] int irpSp___0 ; [L96] int irpSp__Context ; [L97] int irpSp__Control ; [L98] long __cil_tmp23 ; [L101] status = 0 [L102] devExt = DeviceObject__DeviceExtension [L103] irpStack = Irp__Tail__Overlay__CurrentStackLocation [L104] COND FALSE !(irpStack__MinorFunction == 0) [L107] COND FALSE !(irpStack__MinorFunction == 23) [L110] COND TRUE irpStack__MinorFunction == 2 [L234] devExt__Removed = 1 [L235] COND TRUE s == NP [L236] s = SKIP1 [L243] Irp__CurrentLocation ++ [L244] Irp__Tail__Overlay__CurrentStackLocation ++ [L245] CALL IofCallDriver(devExt__TopOfStack, Irp) [L481] int returnVal2 ; [L482] int compRetStatus ; [L483] int lcontext = __VERIFIER_nondet_int() ; [L484] long long __cil_tmp7 ; [L487] COND FALSE !(\read(compRegistered)) [L500] int tmp_ndt_6; [L501] tmp_ndt_6 = __VERIFIER_nondet_int() [L502] COND FALSE !(tmp_ndt_6 == 0) [L505] int tmp_ndt_7; [L506] tmp_ndt_7 = __VERIFIER_nondet_int() [L507] COND TRUE tmp_ndt_7 == 1 [L516] returnVal2 = -1073741823 [L526] COND FALSE !(s == NP) [L530] COND FALSE !(s == MPR1) [L539] COND TRUE s == SKIP1 [L540] s = SKIP2 [L541] lowerDriverReturn = returnVal2 [L549] return (returnVal2); [L245] RET IofCallDriver(devExt__TopOfStack, Irp) [L246] status = 0 [L288] return (status); [L386] RET, EXPR KbFilter_PnP(devobj, pirp) [L386] status = KbFilter_PnP(devobj, pirp) [L410] COND FALSE !(pended == 1) [L418] COND FALSE !(pended == 1) [L426] COND TRUE s != UNLOADED [L427] COND TRUE status != -1 [L428] COND FALSE !(s != SKIP2) [L438] COND FALSE !(pended == 1) [L445] COND FALSE !(s == DC) [L450] COND TRUE status != lowerDriverReturn [L451] CALL errorFn() [L1011] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 240 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 40.3s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 20.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4256 SDtfs, 5375 SDslu, 6486 SDs, 0 SdLazy, 14662 SolverSat, 1088 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 338 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 4.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=313occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 18 MinimizatonAttempts, 262 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 18.2s InterpolantComputationTime, 890 NumberOfCodeBlocks, 890 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 816 ConstructedInterpolants, 0 QuantifiedInterpolants, 179409 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...