/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:33:19,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:33:19,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:33:20,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:33:20,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:33:20,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:33:20,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:33:20,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:33:20,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:33:20,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:33:20,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:33:20,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:33:20,015 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:33:20,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:33:20,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:33:20,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:33:20,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:33:20,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:33:20,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:33:20,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:33:20,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:33:20,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:33:20,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:33:20,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:33:20,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:33:20,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:33:20,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:33:20,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:33:20,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:33:20,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:33:20,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:33:20,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:33:20,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:33:20,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:33:20,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:33:20,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:33:20,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:33:20,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:33:20,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:33:20,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:33:20,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:33:20,055 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:33:20,082 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:33:20,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:33:20,083 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:33:20,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:33:20,084 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:33:20,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:33:20,084 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:33:20,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:33:20,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:33:20,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:33:20,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:33:20,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:33:20,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:33:20,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:33:20,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:33:20,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:33:20,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:33:20,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:33:20,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:33:20,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:33:20,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:33:20,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:33:20,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:33:20,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:33:20,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:33:20,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:33:20,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:33:20,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:33:20,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:33:20,089 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:33:20,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:33:20,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:33:20,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:33:20,615 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:33:20,616 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:33:20,618 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-09-25 14:33:20,713 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/400872fae/8f37bdbbe4514966bcf6c0b89915cbda/FLAG20904d346 [2020-09-25 14:33:21,311 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:33:21,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-09-25 14:33:21,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/400872fae/8f37bdbbe4514966bcf6c0b89915cbda/FLAG20904d346 [2020-09-25 14:33:21,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/400872fae/8f37bdbbe4514966bcf6c0b89915cbda [2020-09-25 14:33:21,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:33:21,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:33:21,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:33:21,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:33:21,622 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:33:21,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:33:21" (1/1) ... [2020-09-25 14:33:21,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177f3252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:21, skipping insertion in model container [2020-09-25 14:33:21,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:33:21" (1/1) ... [2020-09-25 14:33:21,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:33:21,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:33:22,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:33:22,028 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:33:22,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:33:22,221 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:33:22,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:22 WrapperNode [2020-09-25 14:33:22,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:33:22,223 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:33:22,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:33:22,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:33:22,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:22" (1/1) ... [2020-09-25 14:33:22,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:22" (1/1) ... [2020-09-25 14:33:22,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:22" (1/1) ... [2020-09-25 14:33:22,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:22" (1/1) ... [2020-09-25 14:33:22,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:22" (1/1) ... [2020-09-25 14:33:22,291 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:22" (1/1) ... [2020-09-25 14:33:22,296 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:22" (1/1) ... [2020-09-25 14:33:22,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:33:22,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:33:22,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:33:22,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:33:22,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:33:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:33:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:33:22,387 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2020-09-25 14:33:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2020-09-25 14:33:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_PnP [2020-09-25 14:33:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:33:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2020-09-25 14:33:22,388 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2020-09-25 14:33:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2020-09-25 14:33:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2020-09-25 14:33:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2020-09-25 14:33:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Complete [2020-09-25 14:33:22,389 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_CreateClose [2020-09-25 14:33:22,390 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_DispatchPassThrough [2020-09-25 14:33:22,390 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_Power [2020-09-25 14:33:22,390 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2020-09-25 14:33:22,390 INFO L138 BoogieDeclarations]: Found implementation of procedure KbFilter_InternIoCtl [2020-09-25 14:33:22,390 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2020-09-25 14:33:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:33:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-25 14:33:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:33:22,391 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-09-25 14:33:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_PnP [2020-09-25 14:33:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2020-09-25 14:33:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2020-09-25 14:33:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2020-09-25 14:33:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Complete [2020-09-25 14:33:22,392 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_CreateClose [2020-09-25 14:33:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_DispatchPassThrough [2020-09-25 14:33:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_Power [2020-09-25 14:33:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2020-09-25 14:33:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure KbFilter_InternIoCtl [2020-09-25 14:33:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2020-09-25 14:33:22,393 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2020-09-25 14:33:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2020-09-25 14:33:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2020-09-25 14:33:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:33:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2020-09-25 14:33:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:33:22,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:33:22,672 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 14:33:22,754 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2020-09-25 14:33:22,754 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2020-09-25 14:33:22,795 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 14:33:23,009 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-09-25 14:33:23,009 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-09-25 14:33:23,011 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 14:33:23,074 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-09-25 14:33:23,074 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-09-25 14:33:23,081 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 14:33:23,135 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##12: assume !false; [2020-09-25 14:33:23,135 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume false; [2020-09-25 14:33:23,292 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 14:33:23,317 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2020-09-25 14:33:23,317 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2020-09-25 14:33:23,368 WARN L779 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-09-25 14:33:23,577 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume false; [2020-09-25 14:33:23,577 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume !false; [2020-09-25 14:33:23,612 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:33:23,612 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:33:23,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:33:23 BoogieIcfgContainer [2020-09-25 14:33:23,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:33:23,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:33:23,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:33:23,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:33:23,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:33:21" (1/3) ... [2020-09-25 14:33:23,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bb6f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:33:23, skipping insertion in model container [2020-09-25 14:33:23,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:33:22" (2/3) ... [2020-09-25 14:33:23,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58bb6f94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:33:23, skipping insertion in model container [2020-09-25 14:33:23,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:33:23" (3/3) ... [2020-09-25 14:33:23,633 INFO L109 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-09-25 14:33:23,645 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:33:23,656 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:33:23,678 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:33:23,713 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:33:23,713 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:33:23,713 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:33:23,713 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:33:23,714 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:33:23,714 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:33:23,714 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:33:23,714 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:33:23,750 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states. [2020-09-25 14:33:23,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 14:33:23,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:23,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:23,765 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:23,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:23,773 INFO L82 PathProgramCache]: Analyzing trace with hash 738723625, now seen corresponding path program 1 times [2020-09-25 14:33:23,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:23,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460588690] [2020-09-25 14:33:23,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:24,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:24,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:24,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:24,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:24,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:25,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:25,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 14:33:25,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:33:25,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1615 [2020-09-25 14:33:25,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:25,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:25,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:25,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-09-25 14:33:25,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 14:33:25,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:33:25,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:25,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:25,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:33:25,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:25,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:33:25,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:25,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:25,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:25,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:25,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:25,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:25,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:33:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:25,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:25,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:25,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:33:25,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:25,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 14:33:25,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:25,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:25,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:25,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:25,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:33:25,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:25,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460588690] [2020-09-25 14:33:25,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:25,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:33:25,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803314840] [2020-09-25 14:33:25,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:33:25,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:25,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:33:25,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:33:25,907 INFO L87 Difference]: Start difference. First operand 667 states. Second operand 5 states. [2020-09-25 14:33:27,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:27,406 INFO L93 Difference]: Finished difference Result 1028 states and 1235 transitions. [2020-09-25 14:33:27,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:33:27,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-09-25 14:33:27,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:27,434 INFO L225 Difference]: With dead ends: 1028 [2020-09-25 14:33:27,434 INFO L226 Difference]: Without dead ends: 705 [2020-09-25 14:33:27,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:33:27,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-09-25 14:33:27,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 651. [2020-09-25 14:33:27,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-09-25 14:33:27,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 744 transitions. [2020-09-25 14:33:27,565 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 744 transitions. Word has length 85 [2020-09-25 14:33:27,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:27,566 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 744 transitions. [2020-09-25 14:33:27,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:33:27,566 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 744 transitions. [2020-09-25 14:33:27,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 14:33:27,570 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:27,570 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:27,571 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:33:27,571 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:27,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:27,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1433653625, now seen corresponding path program 1 times [2020-09-25 14:33:27,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:27,572 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275785346] [2020-09-25 14:33:27,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:27,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:27,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:27,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:27,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:28,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:28,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-25 14:33:28,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:33:28,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 982 [2020-09-25 14:33:28,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:28,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 14:33:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 14:33:28,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:28,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:28,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:28,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:28,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:33:28,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:28,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 14:33:28,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:28,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:28,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:28,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:28,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:28,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:33:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:28,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:28,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:28,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:33:28,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:28,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:33:28,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:28,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:28,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 14:33:28,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:28,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275785346] [2020-09-25 14:33:28,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:28,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:33:28,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589965316] [2020-09-25 14:33:28,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:33:28,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:28,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:33:28,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:33:28,798 INFO L87 Difference]: Start difference. First operand 651 states and 744 transitions. Second operand 5 states. [2020-09-25 14:33:30,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:30,475 INFO L93 Difference]: Finished difference Result 718 states and 825 transitions. [2020-09-25 14:33:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:33:30,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-09-25 14:33:30,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:30,481 INFO L225 Difference]: With dead ends: 718 [2020-09-25 14:33:30,481 INFO L226 Difference]: Without dead ends: 705 [2020-09-25 14:33:30,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:33:30,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-09-25 14:33:30,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 651. [2020-09-25 14:33:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 651 states. [2020-09-25 14:33:30,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 743 transitions. [2020-09-25 14:33:30,523 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 743 transitions. Word has length 86 [2020-09-25 14:33:30,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:30,524 INFO L479 AbstractCegarLoop]: Abstraction has 651 states and 743 transitions. [2020-09-25 14:33:30,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:33:30,524 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 743 transitions. [2020-09-25 14:33:30,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 14:33:30,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:30,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:30,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:33:30,530 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:30,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:30,531 INFO L82 PathProgramCache]: Analyzing trace with hash -242240865, now seen corresponding path program 1 times [2020-09-25 14:33:30,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:30,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114889486] [2020-09-25 14:33:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:30,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:31,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:31,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 14:33:31,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:31,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-09-25 14:33:31,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:31,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:31,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:33:31,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-09-25 14:33:31,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 14:33:31,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:31,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:31,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:31,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:31,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:33:31,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:31,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:33:31,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:31,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:31,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:31,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:31,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:31,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:31,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:33:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:31,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:31,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:31,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:33:31,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:31,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:33:31,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:31,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:31,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:31,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:31,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:31,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 14:33:31,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:31,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:31,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:31,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:33:31,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:31,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:33:31,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:31,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 14:33:31,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:31,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:31,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114889486] [2020-09-25 14:33:31,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:31,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:33:31,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771707540] [2020-09-25 14:33:31,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:33:31,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:31,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:33:31,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:33:31,278 INFO L87 Difference]: Start difference. First operand 651 states and 743 transitions. Second operand 6 states. [2020-09-25 14:33:33,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:33,467 INFO L93 Difference]: Finished difference Result 964 states and 1110 transitions. [2020-09-25 14:33:33,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:33:33,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-09-25 14:33:33,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:33,475 INFO L225 Difference]: With dead ends: 964 [2020-09-25 14:33:33,475 INFO L226 Difference]: Without dead ends: 878 [2020-09-25 14:33:33,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:33:33,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-09-25 14:33:33,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 747. [2020-09-25 14:33:33,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-09-25 14:33:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 853 transitions. [2020-09-25 14:33:33,517 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 853 transitions. Word has length 136 [2020-09-25 14:33:33,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:33,518 INFO L479 AbstractCegarLoop]: Abstraction has 747 states and 853 transitions. [2020-09-25 14:33:33,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:33:33,518 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 853 transitions. [2020-09-25 14:33:33,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 14:33:33,523 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:33,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:33,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:33:33,523 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:33,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:33,524 INFO L82 PathProgramCache]: Analyzing trace with hash 864276638, now seen corresponding path program 1 times [2020-09-25 14:33:33,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:33,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275711954] [2020-09-25 14:33:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:33,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:33,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:33,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 14:33:33,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:33,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-09-25 14:33:33,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:33,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:33:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-09-25 14:33:33,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 14:33:33,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:33,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:33,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:33,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:33,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:33:33,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:33,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:33:33,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:33,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:33,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:33,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:33,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:34,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:33:34,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:34,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:34,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:34,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:33:34,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:34,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:33:34,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:34,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:34,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:34,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:34,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:34,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 14:33:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:34,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:34,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:34,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:33:34,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:34,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:33:34,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:34,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:34,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:34,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:33:34,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:34,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:34,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275711954] [2020-09-25 14:33:34,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:34,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:33:34,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10420356] [2020-09-25 14:33:34,117 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:33:34,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:34,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:33:34,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:33:34,119 INFO L87 Difference]: Start difference. First operand 747 states and 853 transitions. Second operand 6 states. [2020-09-25 14:33:35,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:35,738 INFO L93 Difference]: Finished difference Result 1011 states and 1158 transitions. [2020-09-25 14:33:35,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:33:35,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2020-09-25 14:33:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:35,746 INFO L225 Difference]: With dead ends: 1011 [2020-09-25 14:33:35,746 INFO L226 Difference]: Without dead ends: 844 [2020-09-25 14:33:35,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:33:35,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2020-09-25 14:33:35,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 822. [2020-09-25 14:33:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-09-25 14:33:35,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 939 transitions. [2020-09-25 14:33:35,788 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 939 transitions. Word has length 158 [2020-09-25 14:33:35,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:35,789 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 939 transitions. [2020-09-25 14:33:35,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:33:35,789 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 939 transitions. [2020-09-25 14:33:35,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 14:33:35,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:35,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:35,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:33:35,793 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:35,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:35,793 INFO L82 PathProgramCache]: Analyzing trace with hash 153469469, now seen corresponding path program 1 times [2020-09-25 14:33:35,793 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:35,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592056811] [2020-09-25 14:33:35,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:35,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:36,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:36,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 14:33:36,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:36,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-25 14:33:36,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:36,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:33:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 149 [2020-09-25 14:33:36,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:33:36,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:36,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:36,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:36,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:36,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:33:36,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:36,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:33:36,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:36,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:36,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:36,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:36,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:33:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:36,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:36,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:36,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:33:36,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:36,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:33:36,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:36,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:36,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:36,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:36,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 14:33:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:36,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:36,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:36,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:33:36,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:36,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:33:36,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:36,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:36,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:36,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592056811] [2020-09-25 14:33:36,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:36,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 14:33:36,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721778162] [2020-09-25 14:33:36,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:33:36,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:36,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:33:36,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:33:36,421 INFO L87 Difference]: Start difference. First operand 822 states and 939 transitions. Second operand 6 states. [2020-09-25 14:33:38,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:38,354 INFO L93 Difference]: Finished difference Result 826 states and 942 transitions. [2020-09-25 14:33:38,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:33:38,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-09-25 14:33:38,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:38,361 INFO L225 Difference]: With dead ends: 826 [2020-09-25 14:33:38,361 INFO L226 Difference]: Without dead ends: 822 [2020-09-25 14:33:38,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:33:38,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2020-09-25 14:33:38,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 821. [2020-09-25 14:33:38,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 821 states. [2020-09-25 14:33:38,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 936 transitions. [2020-09-25 14:33:38,397 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 936 transitions. Word has length 162 [2020-09-25 14:33:38,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:38,398 INFO L479 AbstractCegarLoop]: Abstraction has 821 states and 936 transitions. [2020-09-25 14:33:38,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:33:38,398 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 936 transitions. [2020-09-25 14:33:38,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 14:33:38,402 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:38,402 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:38,403 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:33:38,403 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:38,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:38,403 INFO L82 PathProgramCache]: Analyzing trace with hash 1857862353, now seen corresponding path program 1 times [2020-09-25 14:33:38,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:38,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190749075] [2020-09-25 14:33:38,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:38,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:38,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:39,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:43,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:43,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 14:33:43,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:33:43,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 14:33:43,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:43,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:33:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 14:33:43,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 14:33:43,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:33:43,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:43,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:43,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:43,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:33:43,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:43,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:33:43,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:43,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:43,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:43,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:43,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:43,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:43,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:33:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:43,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:43,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:43,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:33:43,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:43,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:33:43,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:43,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:43,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:33:43,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:43,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:33:43,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:43,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 14:33:43,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:43,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:43,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:43,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:33:43,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:43,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:33:43,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:43,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:43,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:43,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:43,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:33:43,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:43,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 14:33:43,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:43,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:43,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:43,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 14:33:43,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:43,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 14:33:43,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:43,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:43,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:33:43,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:43,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 14:33:43,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:43,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 14:33:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:43,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:44,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:44,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 14:33:44,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:44,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 14:33:44,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:44,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:44,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 14:33:44,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:44,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 14:33:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:44,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:44,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:44,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:33:44,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:44,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:33:44,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:44,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 14:33:44,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:44,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:44,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190749075] [2020-09-25 14:33:44,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:44,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 14:33:44,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083047365] [2020-09-25 14:33:44,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:33:44,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:44,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:33:44,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:33:44,223 INFO L87 Difference]: Start difference. First operand 821 states and 936 transitions. Second operand 11 states. [2020-09-25 14:33:46,670 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2020-09-25 14:33:47,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:47,656 INFO L93 Difference]: Finished difference Result 944 states and 1075 transitions. [2020-09-25 14:33:47,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:33:47,657 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 193 [2020-09-25 14:33:47,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:47,662 INFO L225 Difference]: With dead ends: 944 [2020-09-25 14:33:47,662 INFO L226 Difference]: Without dead ends: 937 [2020-09-25 14:33:47,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-09-25 14:33:47,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2020-09-25 14:33:47,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 881. [2020-09-25 14:33:47,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 881 states. [2020-09-25 14:33:47,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 998 transitions. [2020-09-25 14:33:47,720 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 998 transitions. Word has length 193 [2020-09-25 14:33:47,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:47,721 INFO L479 AbstractCegarLoop]: Abstraction has 881 states and 998 transitions. [2020-09-25 14:33:47,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:33:47,722 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 998 transitions. [2020-09-25 14:33:47,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-25 14:33:47,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:47,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:47,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:33:47,726 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:47,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:47,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1657532014, now seen corresponding path program 1 times [2020-09-25 14:33:47,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:47,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379793544] [2020-09-25 14:33:47,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:48,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:51,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-09-25 14:33:51,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:33:51,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3420 [2020-09-25 14:33:51,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:51,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:51,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:33:51,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-25 14:33:51,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 14:33:51,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:51,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:51,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:51,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:51,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:33:51,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:51,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:33:51,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:51,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:51,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:51,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:51,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:51,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:51,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:33:51,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:51,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:33:51,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 14:33:51,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:51,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:51,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:33:51,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:51,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 14:33:51,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:51,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 14:33:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:51,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:51,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:33:51,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:51,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:33:51,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:51,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:51,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:33:51,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:51,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:33:51,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:51,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 14:33:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:51,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:51,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 14:33:51,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:51,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 14:33:51,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:51,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:33:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 14:33:51,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 14:33:51,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:51,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 14:33:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:51,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:51,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 14:33:51,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:51,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-09-25 14:33:51,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:51,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:51,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:33:51,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:51,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 14:33:51,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:51,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 14:33:51,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:51,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:51,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:51,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:33:51,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:51,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:33:51,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:51,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:51,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:33:51,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 14:33:51,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:33:51,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:52,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379793544] [2020-09-25 14:33:52,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:52,074 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 14:33:52,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243406000] [2020-09-25 14:33:52,075 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 14:33:52,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:52,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 14:33:52,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:33:52,076 INFO L87 Difference]: Start difference. First operand 881 states and 998 transitions. Second operand 14 states. [2020-09-25 14:33:52,940 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 50 [2020-09-25 14:33:55,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:33:55,463 INFO L93 Difference]: Finished difference Result 931 states and 1049 transitions. [2020-09-25 14:33:55,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:33:55,463 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 194 [2020-09-25 14:33:55,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:33:55,470 INFO L225 Difference]: With dead ends: 931 [2020-09-25 14:33:55,470 INFO L226 Difference]: Without dead ends: 858 [2020-09-25 14:33:55,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=187, Invalid=515, Unknown=0, NotChecked=0, Total=702 [2020-09-25 14:33:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-09-25 14:33:55,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 823. [2020-09-25 14:33:55,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2020-09-25 14:33:55,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 931 transitions. [2020-09-25 14:33:55,509 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 931 transitions. Word has length 194 [2020-09-25 14:33:55,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:33:55,510 INFO L479 AbstractCegarLoop]: Abstraction has 823 states and 931 transitions. [2020-09-25 14:33:55,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 14:33:55,510 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 931 transitions. [2020-09-25 14:33:55,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 14:33:55,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:33:55,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:33:55,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:33:55,514 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:33:55,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:33:55,515 INFO L82 PathProgramCache]: Analyzing trace with hash -132300136, now seen corresponding path program 1 times [2020-09-25 14:33:55,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:33:55,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018408300] [2020-09-25 14:33:55,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:33:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:55,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:56,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-09-25 14:33:56,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:56,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-09-25 14:33:56,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:56,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:56,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:33:56,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 183 [2020-09-25 14:33:56,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:33:56,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:56,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:33:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:56,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:56,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:33:56,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:56,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:33:56,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:56,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:56,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:56,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:56,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:56,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:33:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:56,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:56,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:33:56,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:56,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:33:56,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:56,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:56,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:56,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:56,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:56,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:56,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 14:33:56,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:56,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:56,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:33:56,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:56,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:33:56,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:56,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:56,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:33:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:56,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:33:56,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:56,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-25 14:33:56,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:56,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:56,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:56,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:33:56,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:56,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 14:33:56,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:56,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:56,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:33:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 14:33:56,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:56,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 14:33:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:57,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 14:33:57,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:57,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 14:33:57,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:57,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:33:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:57,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 14:33:57,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:33:57,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 14:33:57,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:33:57,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:33:57,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:33:57,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:33:57,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:33:57,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:33:57,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:33:57,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:33:57,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:33:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:33:57,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:33:57,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:33:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:33:57,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018408300] [2020-09-25 14:33:57,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:33:57,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-25 14:33:57,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235271288] [2020-09-25 14:33:57,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:33:57,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:33:57,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:33:57,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:33:57,252 INFO L87 Difference]: Start difference. First operand 823 states and 931 transitions. Second operand 17 states. [2020-09-25 14:34:01,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:01,338 INFO L93 Difference]: Finished difference Result 845 states and 955 transitions. [2020-09-25 14:34:01,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 14:34:01,339 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 195 [2020-09-25 14:34:01,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:01,345 INFO L225 Difference]: With dead ends: 845 [2020-09-25 14:34:01,345 INFO L226 Difference]: Without dead ends: 828 [2020-09-25 14:34:01,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-09-25 14:34:01,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2020-09-25 14:34:01,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 819. [2020-09-25 14:34:01,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-09-25 14:34:01,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 925 transitions. [2020-09-25 14:34:01,385 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 925 transitions. Word has length 195 [2020-09-25 14:34:01,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:01,385 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 925 transitions. [2020-09-25 14:34:01,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 14:34:01,386 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 925 transitions. [2020-09-25 14:34:01,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 14:34:01,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:01,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:01,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:34:01,389 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:01,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:01,391 INFO L82 PathProgramCache]: Analyzing trace with hash -853263794, now seen corresponding path program 1 times [2020-09-25 14:34:01,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:01,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932726409] [2020-09-25 14:34:01,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:01,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:02,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:02,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-09-25 14:34:02,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:02,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 828 [2020-09-25 14:34:02,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:02,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 14:34:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-09-25 14:34:02,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:34:02,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:02,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:02,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:02,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:02,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:34:02,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:02,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:34:02,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:02,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:02,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:02,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:02,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:02,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:02,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:34:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:02,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:02,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:02,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:34:02,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:02,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:34:02,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:02,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:02,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:02,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:02,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 14:34:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:02,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:02,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:02,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:34:02,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:02,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:34:02,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:02,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:02,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:02,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:02,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 14:34:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:02,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:02,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:02,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 14:34:02,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:02,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 14:34:02,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:02,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:34:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:02,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-09-25 14:34:02,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:02,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-25 14:34:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:02,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:02,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:02,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 14:34:02,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-25 14:34:02,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:02,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:34:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 14:34:02,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:02,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 14:34:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:02,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:03,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:03,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:34:03,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 14:34:03,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:03,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:03,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:34:03,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:03,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 14:34:03,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:03,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:34:03,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932726409] [2020-09-25 14:34:03,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:03,101 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-25 14:34:03,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096820690] [2020-09-25 14:34:03,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:34:03,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:03,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:34:03,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:34:03,104 INFO L87 Difference]: Start difference. First operand 819 states and 925 transitions. Second operand 17 states. [2020-09-25 14:34:07,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:34:07,026 INFO L93 Difference]: Finished difference Result 841 states and 949 transitions. [2020-09-25 14:34:07,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 14:34:07,026 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 190 [2020-09-25 14:34:07,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:34:07,033 INFO L225 Difference]: With dead ends: 841 [2020-09-25 14:34:07,033 INFO L226 Difference]: Without dead ends: 798 [2020-09-25 14:34:07,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-09-25 14:34:07,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2020-09-25 14:34:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 789. [2020-09-25 14:34:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-09-25 14:34:07,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 890 transitions. [2020-09-25 14:34:07,076 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 890 transitions. Word has length 190 [2020-09-25 14:34:07,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:34:07,077 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 890 transitions. [2020-09-25 14:34:07,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 14:34:07,077 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 890 transitions. [2020-09-25 14:34:07,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 14:34:07,081 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:34:07,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:34:07,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 14:34:07,082 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:34:07,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:34:07,082 INFO L82 PathProgramCache]: Analyzing trace with hash -443732248, now seen corresponding path program 1 times [2020-09-25 14:34:07,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:34:07,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160917142] [2020-09-25 14:34:07,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:34:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:07,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:07,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:07,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 210 [2020-09-25 14:34:07,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:07,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-09-25 14:34:07,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:07,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:07,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:34:07,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-09-25 14:34:07,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:34:07,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:07,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:34:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:07,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:07,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:07,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:34:07,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:07,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:34:07,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:07,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:07,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:07,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:07,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:07,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:07,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-25 14:34:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:07,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:07,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:07,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 14:34:07,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:07,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:34:07,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:07,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:07,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:07,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:07,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:34:07,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-25 14:34:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:07,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:07,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:07,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 14:34:07,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:07,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:34:07,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:07,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:34:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:07,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:34:07,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:07,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 14:34:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:07,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:08,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:08,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:34:08,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:08,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 14:34:08,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:08,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:08,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:34:08,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:08,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:34:08,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:08,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-25 14:34:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:34:08,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:34:08,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:34:08,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 14:34:08,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:34:08,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 14:34:08,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:34:08,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:34:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:34:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:34:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 14:34:08,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:34:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:34:08,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160917142] [2020-09-25 14:34:08,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:34:08,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 14:34:08,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70005151] [2020-09-25 14:34:08,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:34:08,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:34:08,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:34:08,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:34:08,200 INFO L87 Difference]: Start difference. First operand 789 states and 890 transitions. Second operand 13 states.