/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:51:01,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:51:01,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:51:02,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:51:02,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:51:02,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:51:02,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:51:02,027 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:51:02,029 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:51:02,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:51:02,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:51:02,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:51:02,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:51:02,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:51:02,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:51:02,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:51:02,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:51:02,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:51:02,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:51:02,054 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:51:02,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:51:02,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:51:02,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:51:02,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:51:02,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:51:02,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:51:02,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:51:02,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:51:02,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:51:02,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:51:02,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:51:02,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:51:02,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:51:02,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:51:02,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:51:02,078 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:51:02,079 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:51:02,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:51:02,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:51:02,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:51:02,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:51:02,083 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 [2020-09-24 23:51:02,133 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:51:02,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:51:02,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:51:02,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:51:02,137 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:51:02,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:51:02,137 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:51:02,138 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:51:02,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:51:02,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:51:02,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:51:02,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:51:02,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:51:02,140 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:51:02,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:51:02,141 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:51:02,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:51:02,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:51:02,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:51:02,141 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:51:02,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:51:02,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:51:02,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:51:02,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:51:02,142 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:51:02,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:51:02,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:51:02,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:51:02,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:51:02,143 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:51:02,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:51:02,615 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:51:02,623 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:51:02,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:51:02,629 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:51:02,631 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-09-24 23:51:02,740 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06f3f8139/f3a6273b26304328885303ff40888cfa/FLAGb4a7ecce6 [2020-09-24 23:51:03,346 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:51:03,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-09-24 23:51:03,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06f3f8139/f3a6273b26304328885303ff40888cfa/FLAGb4a7ecce6 [2020-09-24 23:51:03,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06f3f8139/f3a6273b26304328885303ff40888cfa [2020-09-24 23:51:03,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:51:03,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:51:03,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:51:03,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:51:03,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:51:03,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:51:03" (1/1) ... [2020-09-24 23:51:03,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cc86df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:03, skipping insertion in model container [2020-09-24 23:51:03,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:51:03" (1/1) ... [2020-09-24 23:51:03,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:51:03,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:51:04,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:51:04,113 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:51:04,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:51:04,347 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:51:04,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:04 WrapperNode [2020-09-24 23:51:04,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:51:04,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:51:04,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:51:04,349 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:51:04,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:04" (1/1) ... [2020-09-24 23:51:04,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:04" (1/1) ... [2020-09-24 23:51:04,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:04" (1/1) ... [2020-09-24 23:51:04,386 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:04" (1/1) ... [2020-09-24 23:51:04,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:04" (1/1) ... [2020-09-24 23:51:04,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:04" (1/1) ... [2020-09-24 23:51:04,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:04" (1/1) ... [2020-09-24 23:51:04,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:51:04,418 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:51:04,418 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:51:04,418 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:51:04,419 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:04" (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 [2020-09-24 23:51:04,501 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:51:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:51:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-24 23:51:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-09-24 23:51:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-09-24 23:51:04,502 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-09-24 23:51:04,503 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-09-24 23:51:04,503 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:51:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:51:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-24 23:51:04,503 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-09-24 23:51:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-09-24 23:51:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-09-24 23:51:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-09-24 23:51:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-09-24 23:51:04,504 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-09-24 23:51:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-09-24 23:51:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-09-24 23:51:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-09-24 23:51:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-09-24 23:51:04,505 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-09-24 23:51:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-09-24 23:51:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-09-24 23:51:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-09-24 23:51:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-09-24 23:51:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-09-24 23:51:04,506 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-09-24 23:51:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-09-24 23:51:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-09-24 23:51:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-09-24 23:51:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-09-24 23:51:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-09-24 23:51:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-09-24 23:51:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-09-24 23:51:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-09-24 23:51:04,507 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-09-24 23:51:04,508 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-09-24 23:51:04,508 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-09-24 23:51:04,508 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-24 23:51:04,508 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-09-24 23:51:04,508 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-09-24 23:51:04,508 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-09-24 23:51:04,508 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-09-24 23:51:04,508 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-09-24 23:51:04,509 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-09-24 23:51:04,509 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-09-24 23:51:04,509 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-09-24 23:51:04,509 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-09-24 23:51:04,509 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 23:51:04,509 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-09-24 23:51:04,509 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-09-24 23:51:04,509 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-09-24 23:51:04,510 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-09-24 23:51:04,510 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-09-24 23:51:04,510 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-09-24 23:51:04,510 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-09-24 23:51:04,510 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-09-24 23:51:04,510 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-09-24 23:51:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-09-24 23:51:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-09-24 23:51:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-09-24 23:51:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-09-24 23:51:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-09-24 23:51:04,511 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-09-24 23:51:04,512 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-24 23:51:04,512 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-09-24 23:51:04,512 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-09-24 23:51:04,512 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-09-24 23:51:04,512 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-09-24 23:51:04,512 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-09-24 23:51:04,513 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-09-24 23:51:04,513 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-09-24 23:51:04,513 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-09-24 23:51:04,513 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-09-24 23:51:04,513 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-09-24 23:51:04,513 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-09-24 23:51:04,514 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-09-24 23:51:04,514 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-09-24 23:51:04,514 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-09-24 23:51:04,514 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-09-24 23:51:04,514 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-09-24 23:51:04,514 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-09-24 23:51:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-09-24 23:51:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-09-24 23:51:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-09-24 23:51:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-09-24 23:51:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-09-24 23:51:04,515 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-09-24 23:51:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-09-24 23:51:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-09-24 23:51:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-09-24 23:51:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-09-24 23:51:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-09-24 23:51:04,516 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-09-24 23:51:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-09-24 23:51:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-09-24 23:51:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-09-24 23:51:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-09-24 23:51:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-09-24 23:51:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-09-24 23:51:04,517 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-09-24 23:51:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-09-24 23:51:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-09-24 23:51:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-09-24 23:51:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-09-24 23:51:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-09-24 23:51:04,518 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-09-24 23:51:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-09-24 23:51:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-09-24 23:51:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-09-24 23:51:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-09-24 23:51:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 23:51:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 23:51:04,519 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 23:51:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 23:51:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 23:51:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-09-24 23:51:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 23:51:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-09-24 23:51:04,520 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-09-24 23:51:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-09-24 23:51:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-09-24 23:51:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-09-24 23:51:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-09-24 23:51:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-09-24 23:51:04,521 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-09-24 23:51:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-09-24 23:51:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-09-24 23:51:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-09-24 23:51:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:51:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-09-24 23:51:04,522 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-09-24 23:51:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-09-24 23:51:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-09-24 23:51:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:51:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:51:04,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:51:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 23:51:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:51:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 23:51:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 23:51:04,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:51:05,129 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:51:05,137 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:51:05,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:51:05 BoogieIcfgContainer [2020-09-24 23:51:05,147 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:51:05,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:51:05,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:51:05,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:51:05,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:51:03" (1/3) ... [2020-09-24 23:51:05,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e79de21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:51:05, skipping insertion in model container [2020-09-24 23:51:05,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:04" (2/3) ... [2020-09-24 23:51:05,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e79de21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:51:05, skipping insertion in model container [2020-09-24 23:51:05,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:51:05" (3/3) ... [2020-09-24 23:51:05,163 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-09-24 23:51:05,175 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:51:05,187 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:51:05,211 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:51:05,239 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:51:05,240 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:51:05,240 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:51:05,240 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:51:05,240 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:51:05,240 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:51:05,240 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:51:05,240 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:51:05,262 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-09-24 23:51:05,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 23:51:05,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:05,270 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:05,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:05,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:05,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1490968618, now seen corresponding path program 1 times [2020-09-24 23:51:05,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:05,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260465240] [2020-09-24 23:51:05,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:05,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:05,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:05,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:51:05,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:05,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-24 23:51:05,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:51:05,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 23:51:05,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:51:05,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:51:05,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:05,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:06,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:06,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:51:06,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:06,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 23:51:06,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:06,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:06,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:51:06,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260465240] [2020-09-24 23:51:06,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:51:06,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 23:51:06,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43382003] [2020-09-24 23:51:06,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:51:06,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:06,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:51:06,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:51:06,075 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 7 states. [2020-09-24 23:51:06,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:06,555 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2020-09-24 23:51:06,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 23:51:06,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-09-24 23:51:06,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:06,573 INFO L225 Difference]: With dead ends: 128 [2020-09-24 23:51:06,574 INFO L226 Difference]: Without dead ends: 67 [2020-09-24 23:51:06,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:51:06,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-24 23:51:06,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-09-24 23:51:06,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-24 23:51:06,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-09-24 23:51:06,650 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 21 [2020-09-24 23:51:06,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:06,651 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-09-24 23:51:06,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:51:06,651 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-09-24 23:51:06,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 23:51:06,655 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:06,655 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:06,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:51:06,656 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:06,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:06,657 INFO L82 PathProgramCache]: Analyzing trace with hash -114203518, now seen corresponding path program 1 times [2020-09-24 23:51:06,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:06,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035578124] [2020-09-24 23:51:06,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:06,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:06,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:07,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:11,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:11,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 23:51:11,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:51:11,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4362 [2020-09-24 23:51:11,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 23:51:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 23:51:11,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 23:51:11,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:51:11,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:11,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:11,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:11,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:11,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:51:11,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:11,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 23:51:11,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:11,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:51:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:11,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:51:11,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:11,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 23:51:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:11,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:11,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:11,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:51:11,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:11,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 23:51:11,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:51:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:11,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:51:11,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:11,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:51:11,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:11,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:11,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:11,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:51:11,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:11,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 23:51:11,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:11,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:11,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:11,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 23:51:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:11,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:11,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:11,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:51:11,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:11,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 23:51:11,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:11,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:51:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:11,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:51:11,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:11,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:51:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:11,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:11,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:11,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:51:11,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:11,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:51:11,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:11,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:11,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 23:51:11,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035578124] [2020-09-24 23:51:11,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:51:11,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:51:11,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569169744] [2020-09-24 23:51:11,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:51:11,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:11,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:51:11,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:51:11,553 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 8 states. [2020-09-24 23:51:12,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:12,246 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2020-09-24 23:51:12,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:51:12,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-09-24 23:51:12,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:12,250 INFO L225 Difference]: With dead ends: 104 [2020-09-24 23:51:12,250 INFO L226 Difference]: Without dead ends: 101 [2020-09-24 23:51:12,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-24 23:51:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-24 23:51:12,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 93. [2020-09-24 23:51:12,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-24 23:51:12,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2020-09-24 23:51:12,272 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 61 [2020-09-24 23:51:12,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:12,272 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2020-09-24 23:51:12,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:51:12,273 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2020-09-24 23:51:12,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 23:51:12,275 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:12,275 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:12,276 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:51:12,276 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:12,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:12,276 INFO L82 PathProgramCache]: Analyzing trace with hash -116378698, now seen corresponding path program 1 times [2020-09-24 23:51:12,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:12,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900507131] [2020-09-24 23:51:12,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:12,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:12,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:12,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:13,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:17,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:17,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 23:51:17,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:51:17,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 23:51:17,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:51:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 23:51:17,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 23:51:17,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:17,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:17,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:17,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:17,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:17,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:51:17,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:17,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 23:51:17,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:17,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:51:17,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:17,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:51:17,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:17,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 23:51:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:17,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:17,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:17,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:51:17,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:17,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 23:51:17,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:51:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:17,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:51:17,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:17,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:51:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:17,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:17,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:17,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:51:17,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:17,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:51:17,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:17,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:17,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:17,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:17,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 23:51:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:17,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:17,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:51:17,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:17,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 23:51:17,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:51:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:17,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:51:17,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:17,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:51:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:17,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:17,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:17,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:51:17,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:17,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:51:17,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:17,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:17,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:17,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 23:51:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:17,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:17,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 23:51:17,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:17,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 23:51:17,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:51:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:51:17,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 23:51:17,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 23:51:17,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900507131] [2020-09-24 23:51:17,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:51:17,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 23:51:17,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129648309] [2020-09-24 23:51:17,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:51:17,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:17,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:51:17,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:51:17,694 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand 9 states. [2020-09-24 23:51:18,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:18,482 INFO L93 Difference]: Finished difference Result 112 states and 127 transitions. [2020-09-24 23:51:18,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 23:51:18,483 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-24 23:51:18,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:18,485 INFO L225 Difference]: With dead ends: 112 [2020-09-24 23:51:18,485 INFO L226 Difference]: Without dead ends: 108 [2020-09-24 23:51:18,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-24 23:51:18,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-24 23:51:18,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 101. [2020-09-24 23:51:18,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-24 23:51:18,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-09-24 23:51:18,501 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 70 [2020-09-24 23:51:18,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:18,502 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-09-24 23:51:18,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:51:18,502 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-09-24 23:51:18,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 23:51:18,504 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:18,504 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:18,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:51:18,505 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:18,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:18,505 INFO L82 PathProgramCache]: Analyzing trace with hash 2087874581, now seen corresponding path program 1 times [2020-09-24 23:51:18,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:18,506 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022298086] [2020-09-24 23:51:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:18,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:18,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:18,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:18,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:22,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:22,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 23:51:22,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:51:22,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3959 [2020-09-24 23:51:22,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 23:51:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 23:51:22,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 23:51:22,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:22,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:22,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:22,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:22,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:51:22,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:22,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 23:51:22,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:51:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:22,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:51:22,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:22,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 23:51:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:22,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:22,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:22,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:51:22,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:22,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 23:51:22,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:22,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:51:22,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:22,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:51:22,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:22,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:51:22,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:22,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:22,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:22,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:51:22,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:51:22,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:22,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:22,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:22,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 23:51:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:22,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:22,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:22,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:51:22,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:22,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-24 23:51:22,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:51:22,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:22,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:51:22,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:22,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:51:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:22,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:22,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:51:22,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:22,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 23:51:22,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:51:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:22,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:51:22,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:22,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 23:51:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:22,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:22,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:22,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:22,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:22,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 23:51:22,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:51:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:51:22,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 23:51:22,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:22,982 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 23:51:22,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022298086] [2020-09-24 23:51:22,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:51:22,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-24 23:51:22,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532612648] [2020-09-24 23:51:22,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 23:51:22,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:22,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 23:51:22,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:51:22,985 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 13 states. [2020-09-24 23:51:24,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:24,302 INFO L93 Difference]: Finished difference Result 176 states and 204 transitions. [2020-09-24 23:51:24,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 23:51:24,303 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 71 [2020-09-24 23:51:24,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:24,305 INFO L225 Difference]: With dead ends: 176 [2020-09-24 23:51:24,305 INFO L226 Difference]: Without dead ends: 112 [2020-09-24 23:51:24,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=145, Invalid=667, Unknown=0, NotChecked=0, Total=812 [2020-09-24 23:51:24,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-24 23:51:24,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 107. [2020-09-24 23:51:24,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-24 23:51:24,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-09-24 23:51:24,321 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 71 [2020-09-24 23:51:24,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:24,322 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-09-24 23:51:24,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 23:51:24,322 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-09-24 23:51:24,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 23:51:24,324 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:24,325 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:24,325 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:51:24,325 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:24,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:24,325 INFO L82 PathProgramCache]: Analyzing trace with hash 6599122, now seen corresponding path program 1 times [2020-09-24 23:51:24,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:24,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157832599] [2020-09-24 23:51:24,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:24,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:28,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:28,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 23:51:28,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:51:28,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3940 [2020-09-24 23:51:28,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:28,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-24 23:51:28,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 23:51:28,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 23:51:28,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:28,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:28,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:28,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:28,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:51:28,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 23:51:28,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:51:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:51:28,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:28,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 23:51:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:28,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:28,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:28,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:51:28,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:28,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-24 23:51:28,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:28,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:51:28,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:51:28,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:51:28,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:28,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:51:28,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:28,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:28,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:28,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:51:28,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:28,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 23:51:28,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:28,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:51:28,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:51:28,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 23:51:28,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:28,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 23:51:28,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:28,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:28,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:28,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:51:28,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:28,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-24 23:51:28,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:51:28,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:51:28,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:51:28,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:28,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:51:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:28,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:29,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:29,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:51:29,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:29,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-24 23:51:29,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:29,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:51:29,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:51:29,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 23:51:29,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:29,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 23:51:29,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:29,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:29,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:29,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:29,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:29,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 23:51:29,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:29,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:51:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:29,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:51:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:29,253 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 23:51:29,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157832599] [2020-09-24 23:51:29,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:51:29,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-24 23:51:29,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611840930] [2020-09-24 23:51:29,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-24 23:51:29,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:29,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-24 23:51:29,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2020-09-24 23:51:29,259 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 24 states. [2020-09-24 23:51:31,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:31,903 INFO L93 Difference]: Finished difference Result 143 states and 180 transitions. [2020-09-24 23:51:31,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 23:51:31,904 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 71 [2020-09-24 23:51:31,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:31,907 INFO L225 Difference]: With dead ends: 143 [2020-09-24 23:51:31,907 INFO L226 Difference]: Without dead ends: 136 [2020-09-24 23:51:31,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=331, Invalid=2425, Unknown=0, NotChecked=0, Total=2756 [2020-09-24 23:51:31,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-24 23:51:31,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 129. [2020-09-24 23:51:31,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-09-24 23:51:31,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 156 transitions. [2020-09-24 23:51:31,956 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 156 transitions. Word has length 71 [2020-09-24 23:51:31,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:31,960 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 156 transitions. [2020-09-24 23:51:31,960 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-24 23:51:31,961 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 156 transitions. [2020-09-24 23:51:31,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 23:51:31,962 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:31,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:31,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:51:31,966 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:31,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:31,966 INFO L82 PathProgramCache]: Analyzing trace with hash 983151375, now seen corresponding path program 1 times [2020-09-24 23:51:31,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:31,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2049133007] [2020-09-24 23:51:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:32,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:32,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:32,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 23:51:32,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:32,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-09-24 23:51:32,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 23:51:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 23:51:32,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:51:32,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:32,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:32,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:32,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:32,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:51:32,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:32,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:51:32,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:32,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:32,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:32,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:32,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:33,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 23:51:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:33,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:33,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:33,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:51:33,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:33,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 23:51:33,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:33,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:51:33,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:33,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:51:33,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:33,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:51:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:33,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:33,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:33,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:51:33,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:33,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 23:51:33,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:51:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:33,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:51:33,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:33,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 23:51:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:33,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:33,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:33,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:51:33,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:33,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-24 23:51:33,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:51:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:51:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:51:33,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:33,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:51:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:33,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:33,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:33,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:51:33,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:33,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-24 23:51:33,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:33,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:51:33,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:51:33,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 23:51:33,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:33,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 23:51:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:33,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:33,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:33,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:33,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:33,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 23:51:33,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:51:33,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:33,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:51:33,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:33,594 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 23:51:33,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2049133007] [2020-09-24 23:51:33,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:51:33,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 23:51:33,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370271303] [2020-09-24 23:51:33,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 23:51:33,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:33,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 23:51:33,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-09-24 23:51:33,596 INFO L87 Difference]: Start difference. First operand 129 states and 156 transitions. Second operand 23 states. [2020-09-24 23:51:35,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:35,601 INFO L93 Difference]: Finished difference Result 150 states and 182 transitions. [2020-09-24 23:51:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 23:51:35,602 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 71 [2020-09-24 23:51:35,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:35,605 INFO L225 Difference]: With dead ends: 150 [2020-09-24 23:51:35,605 INFO L226 Difference]: Without dead ends: 133 [2020-09-24 23:51:35,606 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=188, Invalid=1618, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 23:51:35,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-24 23:51:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 97. [2020-09-24 23:51:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-24 23:51:35,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2020-09-24 23:51:35,621 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 71 [2020-09-24 23:51:35,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:35,622 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2020-09-24 23:51:35,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 23:51:35,622 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2020-09-24 23:51:35,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 23:51:35,624 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:35,625 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:35,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:51:35,625 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:35,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:35,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1629177121, now seen corresponding path program 1 times [2020-09-24 23:51:35,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:35,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922786805] [2020-09-24 23:51:35,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:35,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:36,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:37,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:37,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:40,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:40,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 23:51:40,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:51:40,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 23:51:40,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:40,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-24 23:51:40,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 23:51:40,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 23:51:40,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:40,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:40,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:40,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:40,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:51:40,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:40,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 23:51:40,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:40,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:51:40,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:40,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:51:40,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:40,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 23:51:40,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:40,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:40,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:40,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:51:40,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-24 23:51:40,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:51:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:51:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:51:40,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:41,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:51:41,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:41,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:41,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:41,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:51:41,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:41,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 23:51:41,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:51:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:51:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 23:51:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:41,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 23:51:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:41,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:41,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:41,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:51:41,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:41,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 23:51:41,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:51:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:51:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 23:51:41,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:51:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:41,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:41,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:41,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:51:41,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:41,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 23:51:41,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:51:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:51:41,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 23:51:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:41,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 23:51:41,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:41,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:41,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:41,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 23:51:41,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:41,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:51:41,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:41,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:51:41,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:41,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:51:41,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:41,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 23:51:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:41,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:41,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:41,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:41,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:41,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 23:51:41,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:41,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:51:41,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:41,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:51:41,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:41,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 23:51:41,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:41,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:41,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:41,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:51:41,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:41,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:51:41,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:51:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:51:41,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:51:41,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-24 23:51:41,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922786805] [2020-09-24 23:51:41,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:51:41,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 23:51:41,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745915312] [2020-09-24 23:51:41,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 23:51:41,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:41,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 23:51:41,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=547, Unknown=0, NotChecked=0, Total=600 [2020-09-24 23:51:41,602 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand 25 states. [2020-09-24 23:51:44,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:44,176 INFO L93 Difference]: Finished difference Result 126 states and 148 transitions. [2020-09-24 23:51:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 23:51:44,178 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 85 [2020-09-24 23:51:44,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:44,180 INFO L225 Difference]: With dead ends: 126 [2020-09-24 23:51:44,182 INFO L226 Difference]: Without dead ends: 121 [2020-09-24 23:51:44,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=359, Invalid=2503, Unknown=0, NotChecked=0, Total=2862 [2020-09-24 23:51:44,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-09-24 23:51:44,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 116. [2020-09-24 23:51:44,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-09-24 23:51:44,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 134 transitions. [2020-09-24 23:51:44,210 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 134 transitions. Word has length 85 [2020-09-24 23:51:44,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:44,217 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 134 transitions. [2020-09-24 23:51:44,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 23:51:44,217 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 134 transitions. [2020-09-24 23:51:44,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 23:51:44,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:44,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:44,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:51:44,221 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:44,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:44,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1204453349, now seen corresponding path program 2 times [2020-09-24 23:51:44,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:44,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208160914] [2020-09-24 23:51:44,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:44,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:45,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:49,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:49,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 23:51:49,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:51:49,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 23:51:49,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:49,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:51:49,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 23:51:49,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 23:51:49,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:49,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:49,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:49,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:49,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 23:51:49,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:49,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:51:49,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:49,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:49,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:49,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 23:51:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:49,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:49,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:49,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:51:49,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:49,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 23:51:49,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:51:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 23:51:49,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:49,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:51:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:49,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:49,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:49,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:51:49,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 23:51:49,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 23:51:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:49,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:51:49,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:49,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 23:51:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:49,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:49,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:49,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:51:49,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:49,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 23:51:49,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:49,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:51:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:49,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 23:51:49,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:49,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 23:51:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:49,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:49,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:49,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 23:51:49,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:49,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:51:49,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:49,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:49,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:49,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:49,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:49,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 23:51:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:49,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:49,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:49,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:51:49,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:49,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:51:49,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:49,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:49,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 23:51:49,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:49,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:49,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 23:51:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:49,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:49,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:49,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 23:51:49,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:49,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:51:49,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:51:49,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:49,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:49,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 23:51:49,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:49,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:49,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:49,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:51:49,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:49,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:51:49,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 23:51:49,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:49,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 23:51:49,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [208160914] [2020-09-24 23:51:49,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:51:49,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 23:51:49,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92695311] [2020-09-24 23:51:49,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 23:51:49,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:49,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 23:51:49,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 23:51:49,672 INFO L87 Difference]: Start difference. First operand 116 states and 134 transitions. Second operand 10 states. [2020-09-24 23:51:50,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:50,153 INFO L93 Difference]: Finished difference Result 163 states and 182 transitions. [2020-09-24 23:51:50,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 23:51:50,154 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-09-24 23:51:50,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:50,156 INFO L225 Difference]: With dead ends: 163 [2020-09-24 23:51:50,156 INFO L226 Difference]: Without dead ends: 89 [2020-09-24 23:51:50,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-09-24 23:51:50,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-24 23:51:50,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-09-24 23:51:50,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-09-24 23:51:50,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2020-09-24 23:51:50,168 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 85 [2020-09-24 23:51:50,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:50,168 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2020-09-24 23:51:50,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 23:51:50,168 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2020-09-24 23:51:50,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 23:51:50,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:50,170 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:50,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 23:51:50,171 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:50,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:50,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1660138148, now seen corresponding path program 1 times [2020-09-24 23:51:50,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:50,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653708421] [2020-09-24 23:51:50,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:50,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking...