/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 11:16:30,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 11:16:30,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 11:16:30,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 11:16:30,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 11:16:30,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 11:16:30,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 11:16:30,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 11:16:30,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 11:16:30,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 11:16:30,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 11:16:30,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 11:16:30,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 11:16:30,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 11:16:30,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 11:16:30,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 11:16:30,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 11:16:30,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 11:16:30,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 11:16:30,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 11:16:30,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 11:16:30,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 11:16:30,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 11:16:30,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 11:16:30,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 11:16:30,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 11:16:30,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 11:16:30,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 11:16:30,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 11:16:30,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 11:16:30,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 11:16:30,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 11:16:30,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 11:16:30,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 11:16:30,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 11:16:30,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 11:16:30,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 11:16:30,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 11:16:30,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 11:16:30,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 11:16:30,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 11:16:30,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 11:16:30,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 11:16:30,360 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 11:16:30,361 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 11:16:30,361 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 11:16:30,361 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 11:16:30,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 11:16:30,362 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 11:16:30,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 11:16:30,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 11:16:30,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 11:16:30,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 11:16:30,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 11:16:30,364 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 11:16:30,364 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 11:16:30,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 11:16:30,364 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 11:16:30,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 11:16:30,365 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 11:16:30,365 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 11:16:30,365 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 11:16:30,365 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 11:16:30,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 11:16:30,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 11:16:30,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 11:16:30,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 11:16:30,367 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 11:16:30,367 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 11:16:30,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 11:16:30,368 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 11:16:30,368 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 11:16:30,683 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 11:16:30,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 11:16:30,704 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 11:16:30,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 11:16:30,709 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 11:16:30,710 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-10-13 11:16:30,768 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5c71bbf8/077dd95048e64a11837af143c3c6a469/FLAG9b8ebe703 [2020-10-13 11:16:31,255 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 11:16:31,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-10-13 11:16:31,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5c71bbf8/077dd95048e64a11837af143c3c6a469/FLAG9b8ebe703 [2020-10-13 11:16:31,522 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5c71bbf8/077dd95048e64a11837af143c3c6a469 [2020-10-13 11:16:31,531 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 11:16:31,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 11:16:31,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 11:16:31,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 11:16:31,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 11:16:31,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:16:31" (1/1) ... [2020-10-13 11:16:31,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6165aa75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:31, skipping insertion in model container [2020-10-13 11:16:31,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:16:31" (1/1) ... [2020-10-13 11:16:31,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 11:16:31,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 11:16:31,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:16:31,920 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 11:16:32,100 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 11:16:32,119 INFO L208 MainTranslator]: Completed translation [2020-10-13 11:16:32,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:32 WrapperNode [2020-10-13 11:16:32,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 11:16:32,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 11:16:32,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 11:16:32,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 11:16:32,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:32" (1/1) ... [2020-10-13 11:16:32,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:32" (1/1) ... [2020-10-13 11:16:32,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:32" (1/1) ... [2020-10-13 11:16:32,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:32" (1/1) ... [2020-10-13 11:16:32,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:32" (1/1) ... [2020-10-13 11:16:32,178 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:32" (1/1) ... [2020-10-13 11:16:32,182 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:32" (1/1) ... [2020-10-13 11:16:32,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 11:16:32,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 11:16:32,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 11:16:32,190 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 11:16:32,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 11:16:32,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 11:16:32,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 11:16:32,257 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-10-13 11:16:32,257 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-10-13 11:16:32,258 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-10-13 11:16:32,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 11:16:32,258 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-10-13 11:16:32,258 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-10-13 11:16:32,258 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-10-13 11:16:32,258 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-10-13 11:16:32,259 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-10-13 11:16:32,259 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-10-13 11:16:32,259 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-10-13 11:16:32,259 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-10-13 11:16:32,259 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-10-13 11:16:32,259 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-10-13 11:16:32,260 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-10-13 11:16:32,260 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-10-13 11:16:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 11:16:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-13 11:16:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 11:16:32,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-13 11:16:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-10-13 11:16:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-10-13 11:16:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-10-13 11:16:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-10-13 11:16:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-10-13 11:16:32,261 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-10-13 11:16:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-10-13 11:16:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-10-13 11:16:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-10-13 11:16:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-10-13 11:16:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-10-13 11:16:32,262 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-10-13 11:16:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-10-13 11:16:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-10-13 11:16:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 11:16:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-10-13 11:16:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 11:16:32,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 11:16:32,530 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:32,605 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-10-13 11:16:32,605 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-10-13 11:16:32,640 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:32,765 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-10-13 11:16:32,765 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-10-13 11:16:32,768 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:32,809 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-13 11:16:32,809 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-13 11:16:32,816 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:32,856 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-10-13 11:16:32,857 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-10-13 11:16:32,949 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:32,967 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-10-13 11:16:32,968 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-10-13 11:16:32,990 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-13 11:16:33,083 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-10-13 11:16:33,083 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-10-13 11:16:33,102 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 11:16:33,103 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 11:16:33,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:16:33 BoogieIcfgContainer [2020-10-13 11:16:33,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 11:16:33,111 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 11:16:33,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 11:16:33,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 11:16:33,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:16:31" (1/3) ... [2020-10-13 11:16:33,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59877969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:16:33, skipping insertion in model container [2020-10-13 11:16:33,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:16:32" (2/3) ... [2020-10-13 11:16:33,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59877969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:16:33, skipping insertion in model container [2020-10-13 11:16:33,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:16:33" (3/3) ... [2020-10-13 11:16:33,119 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-10-13 11:16:33,131 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 11:16:33,139 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 11:16:33,154 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 11:16:33,182 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 11:16:33,182 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 11:16:33,183 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 11:16:33,183 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 11:16:33,183 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 11:16:33,183 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 11:16:33,184 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 11:16:33,184 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 11:16:33,209 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states. [2020-10-13 11:16:33,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 11:16:33,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:33,218 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:33,219 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:33,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:33,225 INFO L82 PathProgramCache]: Analyzing trace with hash -1129426977, now seen corresponding path program 1 times [2020-10-13 11:16:33,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:33,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317393172] [2020-10-13 11:16:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:33,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:33,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:33,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:33,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:33,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:33,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:34,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:34,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-13 11:16:34,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-13 11:16:34,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-10-13 11:16:34,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:34,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:34,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 11:16:34,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:16:34,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-13 11:16:34,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:34,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:34,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:34,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:34,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:34,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 11:16:34,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:34,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:34,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:34,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:34,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:34,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:34,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:34,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:34,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:34,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:34,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:34,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:16:34,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:34,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:34,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:34,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:34,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 11:16:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:34,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317393172] [2020-10-13 11:16:34,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:34,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 11:16:34,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465229873] [2020-10-13 11:16:34,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 11:16:34,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:34,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 11:16:34,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 11:16:34,475 INFO L87 Difference]: Start difference. First operand 240 states. Second operand 5 states. [2020-10-13 11:16:35,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:35,456 INFO L93 Difference]: Finished difference Result 411 states and 618 transitions. [2020-10-13 11:16:35,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:16:35,458 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 11:16:35,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:35,475 INFO L225 Difference]: With dead ends: 411 [2020-10-13 11:16:35,475 INFO L226 Difference]: Without dead ends: 255 [2020-10-13 11:16:35,482 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:16:35,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-13 11:16:35,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 227. [2020-10-13 11:16:35,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-13 11:16:35,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 320 transitions. [2020-10-13 11:16:35,566 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 320 transitions. Word has length 20 [2020-10-13 11:16:35,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:35,567 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 320 transitions. [2020-10-13 11:16:35,567 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 11:16:35,567 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 320 transitions. [2020-10-13 11:16:35,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-13 11:16:35,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:35,568 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] [2020-10-13 11:16:35,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 11:16:35,569 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:35,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:35,569 INFO L82 PathProgramCache]: Analyzing trace with hash -644175699, now seen corresponding path program 1 times [2020-10-13 11:16:35,570 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:35,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434860438] [2020-10-13 11:16:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:35,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:35,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:35,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:35,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:35,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:35,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:35,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-13 11:16:35,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:16:35,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-13 11:16:35,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:16:35,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:16:35,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:36,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:36,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:36,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:36,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:36,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:36,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:16:36,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:36,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:36,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:36,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:36,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:36,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:36,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:36,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:36,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:36,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:36,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 11:16:36,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:36,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:36,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:36,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:16:36,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:36,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:36,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434860438] [2020-10-13 11:16:36,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:36,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-13 11:16:36,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392522954] [2020-10-13 11:16:36,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 11:16:36,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:36,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 11:16:36,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 11:16:36,090 INFO L87 Difference]: Start difference. First operand 227 states and 320 transitions. Second operand 5 states. [2020-10-13 11:16:36,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:36,994 INFO L93 Difference]: Finished difference Result 268 states and 375 transitions. [2020-10-13 11:16:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:16:37,000 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-13 11:16:37,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:37,004 INFO L225 Difference]: With dead ends: 268 [2020-10-13 11:16:37,005 INFO L226 Difference]: Without dead ends: 255 [2020-10-13 11:16:37,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:16:37,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-13 11:16:37,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 227. [2020-10-13 11:16:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-13 11:16:37,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 319 transitions. [2020-10-13 11:16:37,051 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 319 transitions. Word has length 21 [2020-10-13 11:16:37,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:37,052 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 319 transitions. [2020-10-13 11:16:37,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 11:16:37,052 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 319 transitions. [2020-10-13 11:16:37,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 11:16:37,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:37,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:37,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 11:16:37,054 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:37,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:37,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1811427322, now seen corresponding path program 1 times [2020-10-13 11:16:37,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:37,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316153618] [2020-10-13 11:16:37,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:37,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:37,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:37,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-13 11:16:37,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:37,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-13 11:16:37,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:16:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 11:16:37,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 11:16:37,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:37,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:37,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:37,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:37,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:37,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:37,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:37,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:37,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:37,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:37,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:37,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:37,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:37,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:37,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:37,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:37,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:37,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:37,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:37,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:37,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:37,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:37,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:37,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:37,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:37,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:37,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:37,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:37,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:37,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:16:37,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:37,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316153618] [2020-10-13 11:16:37,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:37,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:16:37,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933725580] [2020-10-13 11:16:37,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:16:37,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:37,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:16:37,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:16:37,459 INFO L87 Difference]: Start difference. First operand 227 states and 319 transitions. Second operand 6 states. [2020-10-13 11:16:38,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:38,549 INFO L93 Difference]: Finished difference Result 398 states and 544 transitions. [2020-10-13 11:16:38,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:16:38,550 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-13 11:16:38,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:38,553 INFO L225 Difference]: With dead ends: 398 [2020-10-13 11:16:38,554 INFO L226 Difference]: Without dead ends: 342 [2020-10-13 11:16:38,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:16:38,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-10-13 11:16:38,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 273. [2020-10-13 11:16:38,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 273 states. [2020-10-13 11:16:38,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 379 transitions. [2020-10-13 11:16:38,593 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 379 transitions. Word has length 28 [2020-10-13 11:16:38,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:38,593 INFO L479 AbstractCegarLoop]: Abstraction has 273 states and 379 transitions. [2020-10-13 11:16:38,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:16:38,593 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 379 transitions. [2020-10-13 11:16:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-13 11:16:38,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:38,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:38,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 11:16:38,595 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:38,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:38,596 INFO L82 PathProgramCache]: Analyzing trace with hash 439620198, now seen corresponding path program 1 times [2020-10-13 11:16:38,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:38,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [714993887] [2020-10-13 11:16:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:38,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:38,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:38,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-13 11:16:38,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:38,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-13 11:16:38,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 11:16:38,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:16:38,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:38,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:38,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:38,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:38,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:38,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:38,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:38,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:38,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:38,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:38,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:38,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:38,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:38,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:38,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:38,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:38,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:38,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:38,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:38,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:38,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:38,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:38,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:38,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:38,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:38,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:16:38,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:38,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:38,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:38,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:16:38,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:38,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [714993887] [2020-10-13 11:16:38,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:38,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:16:38,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43241501] [2020-10-13 11:16:38,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:16:38,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:38,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:16:38,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:16:38,902 INFO L87 Difference]: Start difference. First operand 273 states and 379 transitions. Second operand 6 states. [2020-10-13 11:16:39,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:39,670 INFO L93 Difference]: Finished difference Result 421 states and 568 transitions. [2020-10-13 11:16:39,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:16:39,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-13 11:16:39,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:39,675 INFO L225 Difference]: With dead ends: 421 [2020-10-13 11:16:39,676 INFO L226 Difference]: Without dead ends: 333 [2020-10-13 11:16:39,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:16:39,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2020-10-13 11:16:39,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 313. [2020-10-13 11:16:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2020-10-13 11:16:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 430 transitions. [2020-10-13 11:16:39,729 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 430 transitions. Word has length 28 [2020-10-13 11:16:39,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:39,732 INFO L479 AbstractCegarLoop]: Abstraction has 313 states and 430 transitions. [2020-10-13 11:16:39,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:16:39,733 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 430 transitions. [2020-10-13 11:16:39,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 11:16:39,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:39,743 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] [2020-10-13 11:16:39,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 11:16:39,743 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:39,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:39,744 INFO L82 PathProgramCache]: Analyzing trace with hash -1607848921, now seen corresponding path program 1 times [2020-10-13 11:16:39,744 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:39,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [832718228] [2020-10-13 11:16:39,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:39,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:39,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:39,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:39,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 11:16:39,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:39,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-13 11:16:39,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:39,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:39,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 11:16:39,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-13 11:16:39,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:40,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:40,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:40,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:40,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:40,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:40,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:40,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:40,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:40,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:40,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:40,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:40,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:40,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:40,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:40,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:40,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:40,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:40,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:40,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:40,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:40,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:40,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:40,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:40,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:40,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:40,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:40,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:40,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:40,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:40,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:40,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:40,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:40,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:40,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:40,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [832718228] [2020-10-13 11:16:40,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:40,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-13 11:16:40,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087118827] [2020-10-13 11:16:40,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 11:16:40,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:40,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 11:16:40,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 11:16:40,089 INFO L87 Difference]: Start difference. First operand 313 states and 430 transitions. Second operand 6 states. [2020-10-13 11:16:40,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:40,844 INFO L93 Difference]: Finished difference Result 316 states and 432 transitions. [2020-10-13 11:16:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:16:40,844 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-10-13 11:16:40,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:40,847 INFO L225 Difference]: With dead ends: 316 [2020-10-13 11:16:40,848 INFO L226 Difference]: Without dead ends: 312 [2020-10-13 11:16:40,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:16:40,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-10-13 11:16:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2020-10-13 11:16:40,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-10-13 11:16:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 427 transitions. [2020-10-13 11:16:40,888 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 427 transitions. Word has length 38 [2020-10-13 11:16:40,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:40,889 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 427 transitions. [2020-10-13 11:16:40,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 11:16:40,889 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 427 transitions. [2020-10-13 11:16:40,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 11:16:40,894 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:40,894 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] [2020-10-13 11:16:40,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 11:16:40,894 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:40,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:40,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1742109340, now seen corresponding path program 1 times [2020-10-13 11:16:40,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:40,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [673972593] [2020-10-13 11:16:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:40,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:40,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:41,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:41,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:42,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:42,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 11:16:42,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:16:42,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1496 [2020-10-13 11:16:42,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:42,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:42,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 11:16:42,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:16:42,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:42,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:42,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:42,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:42,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:42,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:42,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:42,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:42,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:42,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:42,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:42,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:42,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:42,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:42,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:42,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:42,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:42,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:42,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:42,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:42,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:42,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:42,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:42,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:42,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:42,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:42,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:42,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:42,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 11:16:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:42,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:42,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:42,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:16:42,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:42,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:16:42,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:42,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:42,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:42,579 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [673972593] [2020-10-13 11:16:42,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:42,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 11:16:42,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792965072] [2020-10-13 11:16:42,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 11:16:42,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:42,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 11:16:42,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 11:16:42,581 INFO L87 Difference]: Start difference. First operand 312 states and 427 transitions. Second operand 7 states. [2020-10-13 11:16:43,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:43,342 INFO L93 Difference]: Finished difference Result 343 states and 473 transitions. [2020-10-13 11:16:43,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 11:16:43,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-13 11:16:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:43,345 INFO L225 Difference]: With dead ends: 343 [2020-10-13 11:16:43,345 INFO L226 Difference]: Without dead ends: 340 [2020-10-13 11:16:43,346 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:16:43,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-10-13 11:16:43,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 318. [2020-10-13 11:16:43,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2020-10-13 11:16:43,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 436 transitions. [2020-10-13 11:16:43,377 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 436 transitions. Word has length 46 [2020-10-13 11:16:43,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:43,378 INFO L479 AbstractCegarLoop]: Abstraction has 318 states and 436 transitions. [2020-10-13 11:16:43,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 11:16:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 436 transitions. [2020-10-13 11:16:43,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 11:16:43,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:43,380 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] [2020-10-13 11:16:43,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 11:16:43,380 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:43,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:43,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1876426227, now seen corresponding path program 1 times [2020-10-13 11:16:43,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:43,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920716058] [2020-10-13 11:16:43,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:43,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:43,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-13 11:16:43,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:16:43,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-13 11:16:43,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 11:16:43,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:16:43,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:43,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:43,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:43,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:43,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:43,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:43,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:43,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:43,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:43,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:43,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:43,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:43,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:43,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:43,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:43,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:43,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:43,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:43,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:43,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:43,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:43,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:43,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:43,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:43,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:43,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:43,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:43,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:43,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 11:16:43,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:43,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:43,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:43,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:16:43,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:43,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 11:16:43,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:43,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:43,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-13 11:16:43,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 11:16:43,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:43,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:43,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920716058] [2020-10-13 11:16:43,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:43,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:16:43,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131643737] [2020-10-13 11:16:43,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:16:43,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:43,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:16:43,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:16:43,976 INFO L87 Difference]: Start difference. First operand 318 states and 436 transitions. Second operand 8 states. [2020-10-13 11:16:44,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:44,787 INFO L93 Difference]: Finished difference Result 361 states and 479 transitions. [2020-10-13 11:16:44,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 11:16:44,788 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-13 11:16:44,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:44,791 INFO L225 Difference]: With dead ends: 361 [2020-10-13 11:16:44,791 INFO L226 Difference]: Without dead ends: 294 [2020-10-13 11:16:44,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:16:44,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-13 11:16:44,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 274. [2020-10-13 11:16:44,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 274 states. [2020-10-13 11:16:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 370 transitions. [2020-10-13 11:16:44,821 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 370 transitions. Word has length 46 [2020-10-13 11:16:44,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:44,822 INFO L479 AbstractCegarLoop]: Abstraction has 274 states and 370 transitions. [2020-10-13 11:16:44,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:16:44,822 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 370 transitions. [2020-10-13 11:16:44,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-13 11:16:44,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:44,825 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] [2020-10-13 11:16:44,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 11:16:44,825 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:44,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:44,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1784783245, now seen corresponding path program 1 times [2020-10-13 11:16:44,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:44,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694431463] [2020-10-13 11:16:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:44,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:44,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:45,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:45,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-13 11:16:45,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:16:45,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-13 11:16:45,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 11:16:45,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 11:16:45,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:45,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:45,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:45,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:45,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:45,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:45,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:16:45,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:45,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:45,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:45,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:45,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:45,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:45,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:45,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:45,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:45,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:45,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:45,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:45,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:45,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:45,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:45,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:45,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:45,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:45,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:45,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:45,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:45,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:45,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:45,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:45,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:45,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:45,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:45,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 11:16:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:45,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:45,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:45,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-13 11:16:45,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:45,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 11:16:45,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:45,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:45,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:45,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:16:45,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:45,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:16:45,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:45,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:45,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:45,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 11:16:45,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:45,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:45,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:45,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:45,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:45,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-13 11:16:45,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:45,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694431463] [2020-10-13 11:16:45,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:45,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:16:45,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464342280] [2020-10-13 11:16:45,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:16:45,392 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:45,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:16:45,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:16:45,393 INFO L87 Difference]: Start difference. First operand 274 states and 370 transitions. Second operand 8 states. [2020-10-13 11:16:46,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:46,024 INFO L93 Difference]: Finished difference Result 294 states and 391 transitions. [2020-10-13 11:16:46,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 11:16:46,024 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-10-13 11:16:46,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:46,026 INFO L225 Difference]: With dead ends: 294 [2020-10-13 11:16:46,027 INFO L226 Difference]: Without dead ends: 244 [2020-10-13 11:16:46,027 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 [2020-10-13 11:16:46,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-13 11:16:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2020-10-13 11:16:46,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-10-13 11:16:46,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 322 transitions. [2020-10-13 11:16:46,046 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 322 transitions. Word has length 46 [2020-10-13 11:16:46,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:46,046 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 322 transitions. [2020-10-13 11:16:46,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:16:46,046 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 322 transitions. [2020-10-13 11:16:46,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 11:16:46,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:46,048 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:46,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 11:16:46,048 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:46,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:46,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1852297644, now seen corresponding path program 1 times [2020-10-13 11:16:46,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:46,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471633261] [2020-10-13 11:16:46,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:46,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:46,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:46,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-13 11:16:46,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:46,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-13 11:16:46,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-10-13 11:16:46,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 11:16:46,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:46,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:46,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:46,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:46,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:46,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:46,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:46,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:46,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:46,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:46,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:46,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:46,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:46,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:46,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:46,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:46,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:46,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:46,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:46,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:46,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:46,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:46,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:46,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:46,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:46,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:46,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:46,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:46,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-13 11:16:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:46,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:46,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:46,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:16:46,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:46,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:16:46,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:46,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:46,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:46,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:16:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:46,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:46,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:46,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:46,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:46,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:46,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:46,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:46,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:46,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:46,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 11:16:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:46,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:46,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:46,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:46,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:46,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:46,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:46,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:46,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:46,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:16:46,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:46,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471633261] [2020-10-13 11:16:46,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:46,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:16:46,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224413342] [2020-10-13 11:16:46,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:16:46,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:46,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:16:46,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:16:46,336 INFO L87 Difference]: Start difference. First operand 244 states and 322 transitions. Second operand 8 states. [2020-10-13 11:16:47,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:47,088 INFO L93 Difference]: Finished difference Result 274 states and 357 transitions. [2020-10-13 11:16:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 11:16:47,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-10-13 11:16:47,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:47,094 INFO L225 Difference]: With dead ends: 274 [2020-10-13 11:16:47,094 INFO L226 Difference]: Without dead ends: 242 [2020-10-13 11:16:47,095 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 [2020-10-13 11:16:47,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-13 11:16:47,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-13 11:16:47,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-13 11:16:47,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 318 transitions. [2020-10-13 11:16:47,114 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 318 transitions. Word has length 53 [2020-10-13 11:16:47,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:47,115 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 318 transitions. [2020-10-13 11:16:47,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:16:47,115 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 318 transitions. [2020-10-13 11:16:47,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-13 11:16:47,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:47,117 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] [2020-10-13 11:16:47,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 11:16:47,117 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:47,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:47,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1745163498, now seen corresponding path program 1 times [2020-10-13 11:16:47,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:47,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260324529] [2020-10-13 11:16:47,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:47,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:47,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:47,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:47,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:47,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:47,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-13 11:16:47,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:16:47,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-13 11:16:47,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:47,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:16:47,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 11:16:47,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-13 11:16:47,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:47,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:47,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:47,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:47,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:47,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:47,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:47,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:47,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:47,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:47,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:47,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:47,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:47,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:47,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:48,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:48,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:48,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:48,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:48,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:48,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:48,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:48,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:48,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:48,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:48,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:48,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:48,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:16:48,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:48,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:48,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:48,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-13 11:16:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:48,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:48,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 11:16:48,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:48,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 11:16:48,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:48,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:16:48,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:48,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 11:16:48,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:48,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 11:16:48,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:48,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:48,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:48,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:16:48,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:48,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 11:16:48,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:48,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:48,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:48,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:16:48,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:48,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:48,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260324529] [2020-10-13 11:16:48,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:48,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:16:48,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894808361] [2020-10-13 11:16:48,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:16:48,201 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:48,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:16:48,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:16:48,202 INFO L87 Difference]: Start difference. First operand 242 states and 318 transitions. Second operand 12 states. [2020-10-13 11:16:49,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:49,332 INFO L93 Difference]: Finished difference Result 254 states and 330 transitions. [2020-10-13 11:16:49,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 11:16:49,332 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-13 11:16:49,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:49,335 INFO L225 Difference]: With dead ends: 254 [2020-10-13 11:16:49,335 INFO L226 Difference]: Without dead ends: 213 [2020-10-13 11:16:49,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:16:49,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-10-13 11:16:49,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-10-13 11:16:49,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-10-13 11:16:49,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 278 transitions. [2020-10-13 11:16:49,353 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 278 transitions. Word has length 51 [2020-10-13 11:16:49,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:49,353 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 278 transitions. [2020-10-13 11:16:49,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:16:49,354 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 278 transitions. [2020-10-13 11:16:49,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-13 11:16:49,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:49,355 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] [2020-10-13 11:16:49,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 11:16:49,355 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:49,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:49,356 INFO L82 PathProgramCache]: Analyzing trace with hash 143486070, now seen corresponding path program 1 times [2020-10-13 11:16:49,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:49,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688639338] [2020-10-13 11:16:49,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:49,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:49,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:50,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:50,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-13 11:16:50,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:16:50,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-13 11:16:50,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:50,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:16:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 11:16:50,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 11:16:50,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:50,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:50,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:50,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:50,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:50,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:50,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:50,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:50,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:50,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:50,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:50,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:50,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:50,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:50,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:50,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:50,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:50,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:50,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:50,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 11:16:50,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:50,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:50,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:50,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:50,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:50,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:50,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:50,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:50,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:50,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:16:50,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:50,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:50,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:50,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-13 11:16:50,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:50,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-13 11:16:50,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:50,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:16:50,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:50,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 11:16:50,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:50,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:50,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:50,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:50,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:50,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:16:50,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:50,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 11:16:50,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:50,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:50,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:50,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:16:50,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:50,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:50,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688639338] [2020-10-13 11:16:50,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:50,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 11:16:50,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044431562] [2020-10-13 11:16:50,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 11:16:50,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:50,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 11:16:50,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:16:50,724 INFO L87 Difference]: Start difference. First operand 213 states and 278 transitions. Second operand 14 states. [2020-10-13 11:16:51,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:51,684 INFO L93 Difference]: Finished difference Result 229 states and 294 transitions. [2020-10-13 11:16:51,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 11:16:51,685 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 52 [2020-10-13 11:16:51,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:51,687 INFO L225 Difference]: With dead ends: 229 [2020-10-13 11:16:51,688 INFO L226 Difference]: Without dead ends: 208 [2020-10-13 11:16:51,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:16:51,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-13 11:16:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 208. [2020-10-13 11:16:51,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-13 11:16:51,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 271 transitions. [2020-10-13 11:16:51,705 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 271 transitions. Word has length 52 [2020-10-13 11:16:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:51,706 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 271 transitions. [2020-10-13 11:16:51,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 11:16:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 271 transitions. [2020-10-13 11:16:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-13 11:16:51,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:51,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:51,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 11:16:51,708 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:51,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:51,708 INFO L82 PathProgramCache]: Analyzing trace with hash -429340253, now seen corresponding path program 1 times [2020-10-13 11:16:51,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:51,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99362306] [2020-10-13 11:16:51,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:51,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:51,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:51,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:52,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:52,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 11:16:52,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:16:52,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 947 [2020-10-13 11:16:52,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 11:16:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-13 11:16:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:16:52,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:52,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:52,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:52,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:52,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:52,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:52,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:52,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:52,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:52,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:52,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:52,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:52,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:52,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:52,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:52,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:52,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:52,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:52,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:52,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:52,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:52,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:52,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:52,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:52,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:52,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:52,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:52,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:52,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:52,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:52,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 11:16:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:52,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:52,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:52,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 11:16:52,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:52,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-13 11:16:52,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:52,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:16:52,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:52,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 11:16:52,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:16:52,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:16:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:52,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:53,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:53,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 11:16:53,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:53,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 11:16:53,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:53,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:16:53,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:53,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:16:53,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:53,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:53,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:53,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:53,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:16:53,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:53,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:16:53,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:53,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:53,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:53,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:16:53,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:53,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:53,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99362306] [2020-10-13 11:16:53,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:53,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-13 11:16:53,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642934638] [2020-10-13 11:16:53,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 11:16:53,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:53,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 11:16:53,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-13 11:16:53,090 INFO L87 Difference]: Start difference. First operand 208 states and 271 transitions. Second operand 15 states. [2020-10-13 11:16:54,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:54,038 INFO L93 Difference]: Finished difference Result 220 states and 283 transitions. [2020-10-13 11:16:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:16:54,038 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-13 11:16:54,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:54,040 INFO L225 Difference]: With dead ends: 220 [2020-10-13 11:16:54,040 INFO L226 Difference]: Without dead ends: 206 [2020-10-13 11:16:54,041 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 [2020-10-13 11:16:54,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-13 11:16:54,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-10-13 11:16:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-13 11:16:54,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 267 transitions. [2020-10-13 11:16:54,058 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 267 transitions. Word has length 55 [2020-10-13 11:16:54,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:54,058 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 267 transitions. [2020-10-13 11:16:54,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 11:16:54,058 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 267 transitions. [2020-10-13 11:16:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-13 11:16:54,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:54,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:54,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 11:16:54,060 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:54,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1278878233, now seen corresponding path program 1 times [2020-10-13 11:16:54,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:54,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582871758] [2020-10-13 11:16:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:54,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:54,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:54,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:54,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:56,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:56,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-13 11:16:56,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 11:16:56,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2071 [2020-10-13 11:16:56,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:56,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:56,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 11:16:56,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:16:56,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:56,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:56,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:56,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:56,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:56,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:56,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:16:56,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:56,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:56,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:56,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:56,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:56,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:56,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:56,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:56,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:56,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:56,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:16:56,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:56,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:56,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:56,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:56,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:56,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:56,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:56,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:56,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:56,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:56,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:56,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:56,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:56,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:56,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:56,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 11:16:56,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:56,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:56,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:56,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 11:16:56,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:56,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-13 11:16:56,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:56,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:16:56,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-13 11:16:56,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:16:56,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:56,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:16:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:56,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:56,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:56,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 11:16:56,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:56,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:16:56,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:56,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-13 11:16:56,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:56,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:56,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:56,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:56,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:56,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:16:56,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:56,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:56,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:56,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:56,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:56,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:56,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:56,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582871758] [2020-10-13 11:16:56,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:56,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 11:16:56,378 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682029623] [2020-10-13 11:16:56,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 11:16:56,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:56,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 11:16:56,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-13 11:16:56,379 INFO L87 Difference]: Start difference. First operand 206 states and 267 transitions. Second operand 8 states. [2020-10-13 11:16:56,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:56,985 INFO L93 Difference]: Finished difference Result 246 states and 312 transitions. [2020-10-13 11:16:56,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 11:16:56,985 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-10-13 11:16:56,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:56,987 INFO L225 Difference]: With dead ends: 246 [2020-10-13 11:16:56,987 INFO L226 Difference]: Without dead ends: 205 [2020-10-13 11:16:56,988 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 [2020-10-13 11:16:56,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-10-13 11:16:57,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2020-10-13 11:16:57,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-10-13 11:16:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 262 transitions. [2020-10-13 11:16:57,011 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 262 transitions. Word has length 58 [2020-10-13 11:16:57,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:57,012 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 262 transitions. [2020-10-13 11:16:57,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 11:16:57,015 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 262 transitions. [2020-10-13 11:16:57,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-13 11:16:57,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:57,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:57,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 11:16:57,016 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:57,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:57,018 INFO L82 PathProgramCache]: Analyzing trace with hash 85703434, now seen corresponding path program 1 times [2020-10-13 11:16:57,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:57,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411545149] [2020-10-13 11:16:57,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:57,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:57,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:57,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:57,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:58,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:58,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-13 11:16:58,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:16:58,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1073 [2020-10-13 11:16:58,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:58,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 11:16:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 11:16:58,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:16:58,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:58,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:16:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:58,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:58,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:58,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:58,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:58,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:58,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:58,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:58,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:58,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:16:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:58,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:58,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:58,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:58,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:58,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:58,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:58,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:58,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:58,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:58,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:16:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:58,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:58,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:58,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:16:58,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:58,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:16:58,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:16:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:58,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:16:58,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:58,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-13 11:16:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:58,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:58,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:58,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-13 11:16:58,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:58,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-13 11:16:58,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:16:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-13 11:16:58,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:58,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-13 11:16:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:58,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:58,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:58,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 11:16:58,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:58,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 11:16:58,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:16:58,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:58,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:16:58,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:58,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:16:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:58,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:58,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:16:58,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:16:58,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:16:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 11:16:58,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:16:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:16:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:16:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:16:58,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:16:58,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:16:58,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411545149] [2020-10-13 11:16:58,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:16:58,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-13 11:16:58,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690310710] [2020-10-13 11:16:58,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 11:16:58,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:16:58,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 11:16:58,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-13 11:16:58,511 INFO L87 Difference]: Start difference. First operand 205 states and 262 transitions. Second operand 15 states. [2020-10-13 11:16:59,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:16:59,512 INFO L93 Difference]: Finished difference Result 217 states and 274 transitions. [2020-10-13 11:16:59,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:16:59,512 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 59 [2020-10-13 11:16:59,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:16:59,514 INFO L225 Difference]: With dead ends: 217 [2020-10-13 11:16:59,514 INFO L226 Difference]: Without dead ends: 179 [2020-10-13 11:16:59,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:16:59,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-13 11:16:59,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-10-13 11:16:59,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-13 11:16:59,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 224 transitions. [2020-10-13 11:16:59,528 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 224 transitions. Word has length 59 [2020-10-13 11:16:59,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:16:59,530 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 224 transitions. [2020-10-13 11:16:59,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 11:16:59,530 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 224 transitions. [2020-10-13 11:16:59,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 11:16:59,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:16:59,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:16:59,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 11:16:59,531 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:16:59,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:16:59,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1933570889, now seen corresponding path program 1 times [2020-10-13 11:16:59,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:16:59,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333750482] [2020-10-13 11:16:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:16:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:16:59,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:59,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:16:59,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-13 11:17:00,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:17:00,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 843 [2020-10-13 11:17:00,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 11:17:00,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 11:17:00,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:17:00,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:00,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:00,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:00,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:00,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 11:17:00,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:00,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:00,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:00,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:00,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:00,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:00,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:00,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:00,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:00,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:00,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:00,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:00,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:00,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:00,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:00,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:00,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-13 11:17:00,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:00,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 11:17:00,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:00,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-13 11:17:00,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:17:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:00,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 11:17:00,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:00,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-13 11:17:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:00,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 11:17:00,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:00,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 11:17:00,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:17:00,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:00,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-13 11:17:00,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:00,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-13 11:17:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:00,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:00,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:00,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:17:00,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:00,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-13 11:17:00,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:00,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:17:00,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:00,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:00,787 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333750482] [2020-10-13 11:17:00,787 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:00,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-10-13 11:17:00,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526010375] [2020-10-13 11:17:00,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 11:17:00,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:00,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 11:17:00,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-13 11:17:00,789 INFO L87 Difference]: Start difference. First operand 179 states and 224 transitions. Second operand 15 states. [2020-10-13 11:17:01,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:01,726 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-10-13 11:17:01,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:17:01,726 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-10-13 11:17:01,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:01,728 INFO L225 Difference]: With dead ends: 191 [2020-10-13 11:17:01,728 INFO L226 Difference]: Without dead ends: 160 [2020-10-13 11:17:01,729 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 [2020-10-13 11:17:01,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-13 11:17:01,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2020-10-13 11:17:01,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-13 11:17:01,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 200 transitions. [2020-10-13 11:17:01,745 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 200 transitions. Word has length 54 [2020-10-13 11:17:01,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:01,745 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 200 transitions. [2020-10-13 11:17:01,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 11:17:01,745 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 200 transitions. [2020-10-13 11:17:01,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 11:17:01,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:01,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:01,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 11:17:01,747 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:01,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:01,747 INFO L82 PathProgramCache]: Analyzing trace with hash -309007876, now seen corresponding path program 1 times [2020-10-13 11:17:01,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:01,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110246124] [2020-10-13 11:17:01,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:01,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:01,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:01,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:02,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:02,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 11:17:02,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:17:02,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-10-13 11:17:02,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:02,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:17:02,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 11:17:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 11:17:02,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:02,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:02,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:02,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:02,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:02,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:02,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:02,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:02,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:02,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:02,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:02,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:02,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:02,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:02,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:02,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:02,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:02,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:02,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:02,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:02,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:02,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:02,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:02,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:02,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:02,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:02,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:02,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:02,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:02,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:02,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:02,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:02,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 11:17:02,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:02,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-13 11:17:02,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 11:17:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 11:17:02,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:02,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 11:17:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:02,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:02,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:02,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:17:02,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:02,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:17:02,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:02,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 11:17:02,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:02,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:02,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110246124] [2020-10-13 11:17:02,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:02,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-13 11:17:02,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83095634] [2020-10-13 11:17:02,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 11:17:02,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:02,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 11:17:02,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-13 11:17:02,747 INFO L87 Difference]: Start difference. First operand 160 states and 200 transitions. Second operand 13 states. [2020-10-13 11:17:03,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:03,648 INFO L93 Difference]: Finished difference Result 290 states and 350 transitions. [2020-10-13 11:17:03,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:17:03,649 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-13 11:17:03,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:03,651 INFO L225 Difference]: With dead ends: 290 [2020-10-13 11:17:03,651 INFO L226 Difference]: Without dead ends: 227 [2020-10-13 11:17:03,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2020-10-13 11:17:03,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2020-10-13 11:17:03,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 170. [2020-10-13 11:17:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-13 11:17:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 213 transitions. [2020-10-13 11:17:03,666 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 213 transitions. Word has length 53 [2020-10-13 11:17:03,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:03,666 INFO L479 AbstractCegarLoop]: Abstraction has 170 states and 213 transitions. [2020-10-13 11:17:03,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 11:17:03,666 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 213 transitions. [2020-10-13 11:17:03,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 11:17:03,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:03,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:03,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 11:17:03,668 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:03,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:03,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1433722057, now seen corresponding path program 1 times [2020-10-13 11:17:03,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:03,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605579648] [2020-10-13 11:17:03,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:03,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:03,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:03,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:04,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:04,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-13 11:17:04,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 11:17:04,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-13 11:17:04,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 11:17:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 11:17:04,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 11:17:04,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:04,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:04,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:04,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:04,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:04,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:04,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:04,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:04,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:04,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:04,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:04,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:04,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:04,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:04,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:04,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:04,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:04,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:04,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:04,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:04,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:04,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:04,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:04,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:04,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:04,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:04,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:04,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:04,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:04,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:04,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:04,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:04,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 11:17:04,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:04,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-13 11:17:04,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:04,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 11:17:04,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:04,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-13 11:17:04,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:04,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 11:17:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:04,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:04,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:04,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-13 11:17:04,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:04,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 11:17:04,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:04,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-13 11:17:04,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:04,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:04,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605579648] [2020-10-13 11:17:04,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:04,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-13 11:17:04,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085669163] [2020-10-13 11:17:04,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 11:17:04,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:04,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 11:17:04,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-13 11:17:04,647 INFO L87 Difference]: Start difference. First operand 170 states and 213 transitions. Second operand 14 states. [2020-10-13 11:17:05,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:05,291 INFO L93 Difference]: Finished difference Result 186 states and 229 transitions. [2020-10-13 11:17:05,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 11:17:05,292 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-13 11:17:05,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:05,293 INFO L225 Difference]: With dead ends: 186 [2020-10-13 11:17:05,293 INFO L226 Difference]: Without dead ends: 140 [2020-10-13 11:17:05,294 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-13 11:17:05,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-13 11:17:05,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-13 11:17:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 11:17:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 160 transitions. [2020-10-13 11:17:05,306 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 160 transitions. Word has length 53 [2020-10-13 11:17:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:05,306 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 160 transitions. [2020-10-13 11:17:05,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 11:17:05,306 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 160 transitions. [2020-10-13 11:17:05,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-13 11:17:05,307 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:05,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:05,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 11:17:05,308 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:05,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:05,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1317699651, now seen corresponding path program 1 times [2020-10-13 11:17:05,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:05,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593978703] [2020-10-13 11:17:05,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:05,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:05,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:05,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:05,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:05,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-13 11:17:05,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:17:05,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-13 11:17:05,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:17:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 11:17:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 11:17:05,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:05,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:05,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:05,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:05,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:05,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:05,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 11:17:05,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:05,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:05,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:05,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:05,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:05,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:05,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:05,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:05,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:17:05,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 11:17:05,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:05,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:05,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:05,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:05,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:05,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:05,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 11:17:05,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:05,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 11:17:05,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:05,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:05,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:05,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-13 11:17:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:05,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:05,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:05,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 11:17:05,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:05,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-13 11:17:05,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:05,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:17:05,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-13 11:17:05,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 11:17:05,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:05,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-13 11:17:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:05,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:05,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:05,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:17:05,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:05,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 11:17:05,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 11:17:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 11:17:05,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 11:17:05,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:05,828 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593978703] [2020-10-13 11:17:05,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:05,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-13 11:17:05,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319138006] [2020-10-13 11:17:05,829 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 11:17:05,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:05,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 11:17:05,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-13 11:17:05,830 INFO L87 Difference]: Start difference. First operand 140 states and 160 transitions. Second operand 12 states. [2020-10-13 11:17:06,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:06,560 INFO L93 Difference]: Finished difference Result 163 states and 182 transitions. [2020-10-13 11:17:06,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 11:17:06,564 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-13 11:17:06,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:06,565 INFO L225 Difference]: With dead ends: 163 [2020-10-13 11:17:06,565 INFO L226 Difference]: Without dead ends: 143 [2020-10-13 11:17:06,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2020-10-13 11:17:06,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-13 11:17:06,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2020-10-13 11:17:06,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 11:17:06,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 159 transitions. [2020-10-13 11:17:06,578 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 159 transitions. Word has length 54 [2020-10-13 11:17:06,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:06,578 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 159 transitions. [2020-10-13 11:17:06,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 11:17:06,579 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 159 transitions. [2020-10-13 11:17:06,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 11:17:06,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:06,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 11:17:06,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 11:17:06,580 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:06,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:06,580 INFO L82 PathProgramCache]: Analyzing trace with hash -527681510, now seen corresponding path program 1 times [2020-10-13 11:17:06,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:06,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491640419] [2020-10-13 11:17:06,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:06,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:06,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:07,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:07,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-13 11:17:07,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 11:17:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-13 11:17:07,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-13 11:17:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:07,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:07,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 11:17:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:07,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:07,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:07,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:07,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:07,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:07,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:07,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:07,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:07,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 11:17:07,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 11:17:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:07,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:07,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:07,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:07,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:07,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:07,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:07,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-13 11:17:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:07,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:07,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:07,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:07,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:07,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 11:17:07,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:07,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:07,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:07,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:07,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:07,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-13 11:17:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:07,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:07,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:07,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-13 11:17:07,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:07,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-13 11:17:07,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:07,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 11:17:07,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-13 11:17:07,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 11:17:07,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:07,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-13 11:17:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:07,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:07,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:07,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-13 11:17:07,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:07,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 11:17:07,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:07,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 11:17:07,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:07,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 11:17:07,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:07,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 11:17:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 11:17:07,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 11:17:07,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 11:17:07,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 11:17:07,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 11:17:07,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 11:17:07,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 11:17:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 11:17:07,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 11:17:07,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 11:17:07,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 11:17:07,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 11:17:07,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491640419] [2020-10-13 11:17:07,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 11:17:07,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-13 11:17:07,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910313938] [2020-10-13 11:17:07,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 11:17:07,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 11:17:07,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 11:17:07,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:17:07,358 INFO L87 Difference]: Start difference. First operand 140 states and 159 transitions. Second operand 10 states. [2020-10-13 11:17:07,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 11:17:07,650 INFO L93 Difference]: Finished difference Result 170 states and 194 transitions. [2020-10-13 11:17:07,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 11:17:07,651 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-13 11:17:07,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 11:17:07,653 INFO L225 Difference]: With dead ends: 170 [2020-10-13 11:17:07,653 INFO L226 Difference]: Without dead ends: 133 [2020-10-13 11:17:07,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-13 11:17:07,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-13 11:17:07,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2020-10-13 11:17:07,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-13 11:17:07,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 149 transitions. [2020-10-13 11:17:07,684 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 149 transitions. Word has length 57 [2020-10-13 11:17:07,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 11:17:07,685 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 149 transitions. [2020-10-13 11:17:07,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 11:17:07,685 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 149 transitions. [2020-10-13 11:17:07,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-13 11:17:07,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 11:17:07,689 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] [2020-10-13 11:17:07,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 11:17:07,690 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 11:17:07,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 11:17:07,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1656625880, now seen corresponding path program 1 times [2020-10-13 11:17:07,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 11:17:07,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1610047204] [2020-10-13 11:17:07,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 11:17:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 11:17:07,727 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 11:17:07,728 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 11:17:07,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 11:17:07,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:17:07 BoogieIcfgContainer [2020-10-13 11:17:07,807 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 11:17:07,811 INFO L168 Benchmark]: Toolchain (without parser) took 36276.21 ms. Allocated memory was 140.0 MB in the beginning and 729.3 MB in the end (delta: 589.3 MB). Free memory was 102.4 MB in the beginning and 403.2 MB in the end (delta: -300.8 MB). Peak memory consumption was 288.5 MB. Max. memory is 7.1 GB. [2020-10-13 11:17:07,816 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-13 11:17:07,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 586.67 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.2 MB in the beginning and 177.1 MB in the end (delta: -74.9 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-10-13 11:17:07,825 INFO L168 Benchmark]: Boogie Preprocessor took 68.71 ms. Allocated memory is still 203.9 MB. Free memory was 177.1 MB in the beginning and 173.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2020-10-13 11:17:07,826 INFO L168 Benchmark]: RCFGBuilder took 919.84 ms. Allocated memory is still 203.9 MB. Free memory was 173.2 MB in the beginning and 102.0 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. [2020-10-13 11:17:07,827 INFO L168 Benchmark]: TraceAbstraction took 34695.67 ms. Allocated memory was 203.9 MB in the beginning and 729.3 MB in the end (delta: 525.3 MB). Free memory was 102.0 MB in the beginning and 403.2 MB in the end (delta: -301.2 MB). Peak memory consumption was 224.1 MB. Max. memory is 7.1 GB. [2020-10-13 11:17:07,833 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 586.67 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.2 MB in the beginning and 177.1 MB in the end (delta: -74.9 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.71 ms. Allocated memory is still 203.9 MB. Free memory was 177.1 MB in the beginning and 173.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 919.84 ms. Allocated memory is still 203.9 MB. Free memory was 173.2 MB in the beginning and 102.0 MB in the end (delta: 71.3 MB). Peak memory consumption was 71.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34695.67 ms. Allocated memory was 203.9 MB in the beginning and 729.3 MB in the end (delta: 525.3 MB). Free memory was 102.0 MB in the beginning and 403.2 MB in the end (delta: -301.2 MB). Peak memory consumption was 224.1 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: 34.5s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 15.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4201 SDtfs, 5147 SDslu, 6661 SDs, 0 SdLazy, 14006 SolverSat, 1056 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 348 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=318occurred in iteration=6, 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, 19 MinimizatonAttempts, 247 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 17.4s InterpolantComputationTime, 928 NumberOfCodeBlocks, 928 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 853 ConstructedInterpolants, 0 QuantifiedInterpolants, 186583 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 19 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...