/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:07:32,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:07:32,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:07:32,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:07:32,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:07:32,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:07:32,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:07:32,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:07:32,507 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:07:32,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:07:32,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:07:32,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:07:32,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:07:32,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:07:32,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:07:32,515 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:07:32,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:07:32,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:07:32,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:07:32,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:07:32,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:07:32,525 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:07:32,526 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:07:32,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:07:32,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:07:32,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:07:32,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:07:32,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:07:32,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:07:32,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:07:32,534 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:07:32,535 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:07:32,536 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:07:32,537 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:07:32,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:07:32,539 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:07:32,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:07:32,540 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:07:32,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:07:32,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:07:32,542 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:07:32,543 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 17:07:32,573 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:07:32,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:07:32,575 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:07:32,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:07:32,575 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:07:32,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:07:32,575 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:07:32,576 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:07:32,576 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:07:32,576 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:07:32,576 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:07:32,576 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:07:32,576 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:07:32,577 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:07:32,577 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:07:32,577 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:07:32,577 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:07:32,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:07:32,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:07:32,578 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:07:32,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:07:32,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:07:32,579 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:07:32,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:07:32,579 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:07:32,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:07:32,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:07:32,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:07:32,580 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:07:32,580 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;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;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;log-additional-information=true; [2020-09-24 17:07:33,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:07:33,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:07:33,034 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:07:33,036 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:07:33,037 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:07:33,038 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-09-24 17:07:33,118 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4733831a/03a493a34f044f75be8e7d96b58e0386/FLAG3ae3cd03c [2020-09-24 17:07:33,752 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:07:33,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-09-24 17:07:33,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4733831a/03a493a34f044f75be8e7d96b58e0386/FLAG3ae3cd03c [2020-09-24 17:07:34,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4733831a/03a493a34f044f75be8e7d96b58e0386 [2020-09-24 17:07:34,047 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:07:34,051 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:07:34,053 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:07:34,053 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:07:34,059 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:07:34,060 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:07:34" (1/1) ... [2020-09-24 17:07:34,065 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b9c226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:34, skipping insertion in model container [2020-09-24 17:07:34,066 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:07:34" (1/1) ... [2020-09-24 17:07:34,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:07:34,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:07:34,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:07:34,595 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:07:34,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:07:34,739 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:07:34,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:34 WrapperNode [2020-09-24 17:07:34,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:07:34,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:07:34,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:07:34,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:07:34,758 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:34" (1/1) ... [2020-09-24 17:07:34,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:34" (1/1) ... [2020-09-24 17:07:34,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:34" (1/1) ... [2020-09-24 17:07:34,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:34" (1/1) ... [2020-09-24 17:07:34,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:34" (1/1) ... [2020-09-24 17:07:34,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:34" (1/1) ... [2020-09-24 17:07:34,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:34" (1/1) ... [2020-09-24 17:07:34,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:07:34,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:07:34,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:07:34,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:07:34,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:34" (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 17:07:34,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:07:34,884 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:07:34,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-24 17:07:34,884 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-09-24 17:07:34,884 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-09-24 17:07:34,884 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-09-24 17:07:34,885 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-09-24 17:07:34,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:07:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:07:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-24 17:07:34,885 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-09-24 17:07:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-09-24 17:07:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-09-24 17:07:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-09-24 17:07:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-09-24 17:07:34,886 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-09-24 17:07:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-09-24 17:07:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-09-24 17:07:34,887 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-09-24 17:07:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-09-24 17:07:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-09-24 17:07:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-09-24 17:07:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-09-24 17:07:34,888 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-09-24 17:07:34,889 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-09-24 17:07:34,889 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-09-24 17:07:34,889 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-09-24 17:07:34,889 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-09-24 17:07:34,889 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-09-24 17:07:34,889 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-09-24 17:07:34,890 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-09-24 17:07:34,890 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-09-24 17:07:34,890 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-09-24 17:07:34,890 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-09-24 17:07:34,890 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-09-24 17:07:34,890 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-09-24 17:07:34,890 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-09-24 17:07:34,891 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-09-24 17:07:34,891 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-24 17:07:34,891 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-09-24 17:07:34,891 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-09-24 17:07:34,891 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-09-24 17:07:34,891 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-09-24 17:07:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-09-24 17:07:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-09-24 17:07:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-09-24 17:07:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-09-24 17:07:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-09-24 17:07:34,892 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 17:07:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-09-24 17:07:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-09-24 17:07:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-09-24 17:07:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-09-24 17:07:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-09-24 17:07:34,893 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-09-24 17:07:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-09-24 17:07:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-09-24 17:07:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-09-24 17:07:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-09-24 17:07:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-09-24 17:07:34,894 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-09-24 17:07:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-09-24 17:07:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-09-24 17:07:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-09-24 17:07:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-24 17:07:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-09-24 17:07:34,895 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-09-24 17:07:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-09-24 17:07:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-09-24 17:07:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-09-24 17:07:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-09-24 17:07:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-09-24 17:07:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-09-24 17:07:34,896 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-09-24 17:07:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-09-24 17:07:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-09-24 17:07:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-09-24 17:07:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-09-24 17:07:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-09-24 17:07:34,897 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-09-24 17:07:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-09-24 17:07:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-09-24 17:07:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-09-24 17:07:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-09-24 17:07:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-09-24 17:07:34,898 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-09-24 17:07:34,899 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-09-24 17:07:34,899 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-09-24 17:07:34,899 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-09-24 17:07:34,899 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-09-24 17:07:34,899 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-09-24 17:07:34,899 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-09-24 17:07:34,899 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-09-24 17:07:34,900 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-09-24 17:07:34,900 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-09-24 17:07:34,900 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-09-24 17:07:34,900 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-09-24 17:07:34,900 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-09-24 17:07:34,900 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-09-24 17:07:34,900 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-09-24 17:07:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-09-24 17:07:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-09-24 17:07:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-09-24 17:07:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-09-24 17:07:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-09-24 17:07:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-09-24 17:07:34,901 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-09-24 17:07:34,902 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-09-24 17:07:34,902 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-09-24 17:07:34,902 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-09-24 17:07:34,902 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-09-24 17:07:34,902 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 17:07:34,902 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 17:07:34,903 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-24 17:07:34,903 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 17:07:34,903 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-24 17:07:34,903 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-09-24 17:07:34,903 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-24 17:07:34,903 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-09-24 17:07:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-09-24 17:07:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-09-24 17:07:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-09-24 17:07:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-09-24 17:07:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-09-24 17:07:34,904 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-09-24 17:07:34,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-09-24 17:07:34,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-09-24 17:07:34,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-09-24 17:07:34,905 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-09-24 17:07:34,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:07:34,905 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-09-24 17:07:34,906 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-09-24 17:07:34,906 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-09-24 17:07:34,906 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-09-24 17:07:34,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:07:34,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:07:34,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 17:07:34,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 17:07:34,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:07:34,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 17:07:34,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 17:07:34,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 17:07:35,436 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:07:35,436 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 17:07:35,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:07:35 BoogieIcfgContainer [2020-09-24 17:07:35,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:07:35,443 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:07:35,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:07:35,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:07:35,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:07:34" (1/3) ... [2020-09-24 17:07:35,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5943fb2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:07:35, skipping insertion in model container [2020-09-24 17:07:35,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:07:34" (2/3) ... [2020-09-24 17:07:35,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5943fb2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:07:35, skipping insertion in model container [2020-09-24 17:07:35,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:07:35" (3/3) ... [2020-09-24 17:07:35,450 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-09-24 17:07:35,463 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:07:35,474 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:07:35,496 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:07:35,533 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:07:35,533 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:07:35,533 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:07:35,533 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:07:35,533 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:07:35,534 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:07:35,534 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:07:35,534 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:07:35,563 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-09-24 17:07:35,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-24 17:07:35,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:35,572 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 17:07:35,573 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:35,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:35,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1653885127, now seen corresponding path program 1 times [2020-09-24 17:07:35,592 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:35,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790707120] [2020-09-24 17:07:35,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:36,114 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:36,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 17:07:36,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:36,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-09-24 17:07:36,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:36,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:07:36,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 17:07:36,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 17:07:36,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:07:36,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:36,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:36,344 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:36,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 17:07:36,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 17:07:36,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:36,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:36,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:36,362 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 17:07:36,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790707120] [2020-09-24 17:07:36,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:36,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 17:07:36,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280701897] [2020-09-24 17:07:36,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 17:07:36,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:36,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 17:07:36,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:07:36,394 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 7 states. [2020-09-24 17:07:36,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:36,925 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2020-09-24 17:07:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 17:07:36,928 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-09-24 17:07:36,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:36,943 INFO L225 Difference]: With dead ends: 126 [2020-09-24 17:07:36,943 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 17:07:36,948 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 17:07:36,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 17:07:37,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-09-24 17:07:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 17:07:37,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2020-09-24 17:07:37,011 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 21 [2020-09-24 17:07:37,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:37,011 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2020-09-24 17:07:37,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 17:07:37,012 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2020-09-24 17:07:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 17:07:37,015 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:37,015 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 17:07:37,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:07:37,016 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:37,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:37,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1154270079, now seen corresponding path program 1 times [2020-09-24 17:07:37,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:37,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208323672] [2020-09-24 17:07:37,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:37,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:37,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,267 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 17:07:41,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 17:07:41,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4213 [2020-09-24 17:07:41,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:07:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 17:07:41,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 17:07:41,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:41,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,377 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 17:07:41,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 17:07:41,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:41,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:41,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:41,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 17:07:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,472 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:07:41,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 17:07:41,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:07:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:07:41,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:41,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:07:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,559 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:41,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 17:07:41,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:07:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:07:41,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:41,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:07:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,638 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:07:41,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 17:07:41,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:07:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:41,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:07:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:41,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:41,663 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:41,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:41,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:41,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:07:41,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:41,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:41,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:41,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:41,685 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 17:07:41,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208323672] [2020-09-24 17:07:41,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:41,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:07:41,686 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764098045] [2020-09-24 17:07:41,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:07:41,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:41,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:07:41,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:07:41,690 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 9 states. [2020-09-24 17:07:42,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:42,058 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-09-24 17:07:42,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 17:07:42,059 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-09-24 17:07:42,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:42,061 INFO L225 Difference]: With dead ends: 100 [2020-09-24 17:07:42,061 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 17:07:42,064 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-24 17:07:42,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 17:07:42,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-09-24 17:07:42,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 17:07:42,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 73 transitions. [2020-09-24 17:07:42,093 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 73 transitions. Word has length 61 [2020-09-24 17:07:42,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:42,093 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 73 transitions. [2020-09-24 17:07:42,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:07:42,094 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 73 transitions. [2020-09-24 17:07:42,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 17:07:42,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:42,097 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 17:07:42,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:07:42,099 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:42,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:42,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1531514875, now seen corresponding path program 1 times [2020-09-24 17:07:42,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:42,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155934525] [2020-09-24 17:07:42,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:42,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:42,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:42,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:43,444 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:43,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 17:07:43,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:43,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1309 [2020-09-24 17:07:43,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 17:07:43,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 17:07:43,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 17:07:43,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:43,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:43,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:43,702 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:43,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 17:07:43,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:43,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 17:07:43,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:43,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:43,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:43,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:07:43,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:43,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 17:07:43,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:43,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:43,768 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:43,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:07:43,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:43,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 17:07:43,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:43,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:43,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:07:43,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:43,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:07:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:43,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:43,787 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:43,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:43,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:43,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:07:43,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:43,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:43,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:43,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:43,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:43,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:07:43,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:43,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:43,826 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:43,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:07:43,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:43,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 17:07:43,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:43,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:43,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:43,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:07:43,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:43,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:07:43,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:43,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:43,844 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:43,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:43,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:43,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:07:43,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:43,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:43,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:43,857 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 17:07:43,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155934525] [2020-09-24 17:07:43,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:43,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 17:07:43,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638908089] [2020-09-24 17:07:43,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 17:07:43,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:43,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 17:07:43,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 17:07:43,859 INFO L87 Difference]: Start difference. First operand 68 states and 73 transitions. Second operand 8 states. [2020-09-24 17:07:44,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:44,529 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2020-09-24 17:07:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 17:07:44,530 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-09-24 17:07:44,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:44,532 INFO L225 Difference]: With dead ends: 107 [2020-09-24 17:07:44,532 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 17:07:44,533 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 17:07:44,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 17:07:44,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 87. [2020-09-24 17:07:44,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 17:07:44,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-09-24 17:07:44,548 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 61 [2020-09-24 17:07:44,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:44,549 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-09-24 17:07:44,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 17:07:44,549 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-09-24 17:07:44,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 17:07:44,551 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:44,551 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] [2020-09-24 17:07:44,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 17:07:44,552 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:44,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:44,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1057583997, now seen corresponding path program 1 times [2020-09-24 17:07:44,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:44,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676491324] [2020-09-24 17:07:44,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:44,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:44,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:45,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:45,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:49,476 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:49,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:07:49,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 17:07:49,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4893 [2020-09-24 17:07:49,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 17:07:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-24 17:07:49,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:07:49,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:49,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:49,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:49,573 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:49,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 17:07:49,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:49,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:07:49,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:49,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:49,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:49,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 17:07:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:49,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:49,609 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:49,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:07:49,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:49,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:07:49,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:49,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:49,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:49,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:49,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:49,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:07:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:49,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:49,632 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:49,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:49,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:49,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 17:07:49,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:49,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:49,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:49,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:07:49,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:49,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:49,715 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:49,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:07:49,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:49,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 17:07:49,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:49,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:07:49,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:07:49,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:49,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:07:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:49,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:49,817 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:49,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:49,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:49,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 17:07:49,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:07:49,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:07:49,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 17:07:49,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 17:07:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:49,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:49,890 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:49,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 17:07:49,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:49,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:07:49,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 17:07:49,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:49,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 17:07:49,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676491324] [2020-09-24 17:07:49,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:07:49,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 17:07:49,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420577471] [2020-09-24 17:07:49,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:07:49,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:49,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:07:49,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:07:49,915 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand 10 states. [2020-09-24 17:07:50,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:50,530 INFO L93 Difference]: Finished difference Result 131 states and 145 transitions. [2020-09-24 17:07:50,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 17:07:50,531 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-09-24 17:07:50,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:50,534 INFO L225 Difference]: With dead ends: 131 [2020-09-24 17:07:50,534 INFO L226 Difference]: Without dead ends: 79 [2020-09-24 17:07:50,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 12 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 17:07:50,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-24 17:07:50,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-09-24 17:07:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-24 17:07:50,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2020-09-24 17:07:50,571 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 70 [2020-09-24 17:07:50,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:50,577 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2020-09-24 17:07:50,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:07:50,577 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2020-09-24 17:07:50,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 17:07:50,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:50,580 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 17:07:50,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 17:07:50,581 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:50,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:50,582 INFO L82 PathProgramCache]: Analyzing trace with hash 2098824736, now seen corresponding path program 1 times [2020-09-24 17:07:50,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:50,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144616685] [2020-09-24 17:07:50,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:50,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:50,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:51,817 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:51,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 17:07:51,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:51,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1205 [2020-09-24 17:07:51,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 17:07:51,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 17:07:51,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-24 17:07:51,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:51,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:51,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:51,942 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:51,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 17:07:51,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:51,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 17:07:51,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:51,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:51,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:51,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 17:07:51,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:51,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 17:07:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:51,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:51,991 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:51,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:07:51,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:51,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 17:07:51,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:51,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:51,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:51,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:07:51,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:51,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:07:51,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:52,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:52,008 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:52,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:52,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:07:52,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:52,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:52,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:52,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:07:52,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:52,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:52,043 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:52,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:07:52,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:52,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 17:07:52,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:52,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 17:07:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:52,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:07:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:52,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:52,061 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:52,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:52,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:52,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 17:07:52,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:52,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:52,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:52,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 17:07:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:52,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:52,119 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:52,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 17:07:52,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:52,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 17:07:52,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:52,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:07:52,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 17:07:52,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:52,168 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 17:07:52,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144616685] [2020-09-24 17:07:52,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:52,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 17:07:52,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152809572] [2020-09-24 17:07:52,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 17:07:52,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:52,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 17:07:52,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 17:07:52,172 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand 9 states. [2020-09-24 17:07:52,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:52,746 INFO L93 Difference]: Finished difference Result 94 states and 100 transitions. [2020-09-24 17:07:52,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 17:07:52,747 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-24 17:07:52,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:52,749 INFO L225 Difference]: With dead ends: 94 [2020-09-24 17:07:52,749 INFO L226 Difference]: Without dead ends: 89 [2020-09-24 17:07:52,750 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 17:07:52,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-24 17:07:52,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2020-09-24 17:07:52,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-24 17:07:52,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-09-24 17:07:52,770 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 70 [2020-09-24 17:07:52,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:52,771 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-09-24 17:07:52,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 17:07:52,771 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-09-24 17:07:52,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 17:07:52,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:52,774 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 17:07:52,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 17:07:52,774 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:52,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:52,775 INFO L82 PathProgramCache]: Analyzing trace with hash 2039706158, now seen corresponding path program 1 times [2020-09-24 17:07:52,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:52,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652845780] [2020-09-24 17:07:52,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:52,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:53,644 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:53,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 17:07:53,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:53,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-09-24 17:07:53,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:53,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 17:07:53,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 17:07:53,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 17:07:53,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:53,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:53,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:53,750 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:53,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 17:07:53,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:53,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:07:53,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:53,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:53,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:53,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:53,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:53,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 17:07:53,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:53,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:53,819 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:53,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:07:53,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:53,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 17:07:53,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:53,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:07:53,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:53,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:07:53,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:53,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:07:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:53,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:53,874 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:53,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:53,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:53,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 17:07:53,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:53,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:07:53,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:53,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:07:53,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:53,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:07:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:53,988 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:53,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:07:53,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:53,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 17:07:53,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:07:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:07:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:07:53,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:54,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:07:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:54,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:54,108 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:54,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:54,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:54,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 17:07:54,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:07:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:07:54,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:07:54,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:07:54,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 17:07:54,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:54,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:54,238 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:54,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:07:54,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:54,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 17:07:54,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:54,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:07:54,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:54,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:07:54,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:54,292 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 17:07:54,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652845780] [2020-09-24 17:07:54,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:54,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 17:07:54,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551004695] [2020-09-24 17:07:54,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 17:07:54,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:54,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 17:07:54,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-09-24 17:07:54,295 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 23 states. [2020-09-24 17:07:55,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:07:55,769 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2020-09-24 17:07:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 17:07:55,770 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 71 [2020-09-24 17:07:55,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:07:55,774 INFO L225 Difference]: With dead ends: 97 [2020-09-24 17:07:55,774 INFO L226 Difference]: Without dead ends: 89 [2020-09-24 17:07:55,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=1618, Unknown=0, NotChecked=0, Total=1806 [2020-09-24 17:07:55,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-24 17:07:55,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2020-09-24 17:07:55,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-24 17:07:55,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-09-24 17:07:55,797 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 71 [2020-09-24 17:07:55,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:07:55,797 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-09-24 17:07:55,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 17:07:55,798 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-09-24 17:07:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 17:07:55,801 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:07:55,801 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 17:07:55,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 17:07:55,801 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:07:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:07:55,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2033290459, now seen corresponding path program 1 times [2020-09-24 17:07:55,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:07:55,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918172948] [2020-09-24 17:07:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:07:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:55,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:56,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:58,472 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:58,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 17:07:58,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:07:58,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2645 [2020-09-24 17:07:58,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:58,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 17:07:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-24 17:07:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 17:07:58,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:58,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:07:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:58,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:58,597 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:58,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 17:07:58,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:58,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:07:58,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:07:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:58,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:07:58,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:58,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 17:07:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:58,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:58,662 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:58,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:07:58,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:58,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 17:07:58,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:07:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:58,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:07:58,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:58,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:07:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:58,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:58,724 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:58,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:58,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:58,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 17:07:58,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:58,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:07:58,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:07:58,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:58,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:07:58,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:58,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:58,856 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:58,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:07:58,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:58,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 17:07:58,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:58,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 17:07:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:07:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 17:07:58,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:58,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:07:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:58,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:58,970 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:58,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:07:58,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:58,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-24 17:07:58,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:07:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:07:58,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 17:07:58,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 17:07:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:59,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:59,076 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:59,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 17:07:59,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:59,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:07:59,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:59,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:07:59,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:59,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 17:07:59,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:59,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 17:07:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:59,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:59,112 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:59,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:07:59,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:59,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 17:07:59,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:07:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:07:59,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:07:59,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:59,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 17:07:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:07:59,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:07:59,177 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:07:59,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:07:59,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:07:59,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 17:07:59,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:07:59,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:07:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:07:59,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 17:07:59,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:07:59,220 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 17:07:59,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918172948] [2020-09-24 17:07:59,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:07:59,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-24 17:07:59,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611606267] [2020-09-24 17:07:59,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-24 17:07:59,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:07:59,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-24 17:07:59,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-09-24 17:07:59,223 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 24 states. [2020-09-24 17:08:00,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:00,627 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2020-09-24 17:08:00,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 17:08:00,627 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 85 [2020-09-24 17:08:00,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:00,629 INFO L225 Difference]: With dead ends: 89 [2020-09-24 17:08:00,629 INFO L226 Difference]: Without dead ends: 82 [2020-09-24 17:08:00,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2020-09-24 17:08:00,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-24 17:08:00,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-09-24 17:08:00,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-24 17:08:00,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2020-09-24 17:08:00,659 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 85 [2020-09-24 17:08:00,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:00,660 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2020-09-24 17:08:00,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-24 17:08:00,660 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2020-09-24 17:08:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 17:08:00,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:00,664 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 17:08:00,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 17:08:00,664 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:00,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:00,665 INFO L82 PathProgramCache]: Analyzing trace with hash 571953633, now seen corresponding path program 2 times [2020-09-24 17:08:00,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:00,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1240687194] [2020-09-24 17:08:00,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:00,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:00,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:02,079 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:02,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 17:08:02,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:08:02,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1387 [2020-09-24 17:08:02,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:08:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-24 17:08:02,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 17:08:02,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:02,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:08:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:02,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:02,173 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:02,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 17:08:02,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:02,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:08:02,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:02,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:02,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:02,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:02,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:02,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 17:08:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:02,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:02,208 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:02,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:08:02,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:02,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 17:08:02,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:02,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:02,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:02,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:08:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:02,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:02,223 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:02,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:08:02,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:08:02,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:02,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:08:02,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-24 17:08:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:02,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:02,241 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:02,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:08:02,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:02,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 17:08:02,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:02,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:02,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:02,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:02,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 17:08:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:02,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:02,256 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:02,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 17:08:02,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:02,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:08:02,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:02,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:02,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-24 17:08:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:02,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:02,284 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:02,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 17:08:02,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:02,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:08:02,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:02,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:02,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:02,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:02,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:02,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 17:08:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:02,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:02,297 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:02,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 17:08:02,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:02,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 17:08:02,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:02,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:08:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:08:02,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:02,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-24 17:08:02,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:02,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:02,322 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:08:02,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 17:08:02,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:08:02,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 17:08:02,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:08:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:08:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:08:02,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 17:08:02,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:08:02,363 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-09-24 17:08:02,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1240687194] [2020-09-24 17:08:02,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:08:02,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 17:08:02,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153882228] [2020-09-24 17:08:02,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 17:08:02,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:08:02,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 17:08:02,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 17:08:02,365 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 10 states. [2020-09-24 17:08:02,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:08:02,982 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2020-09-24 17:08:02,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 17:08:02,984 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-09-24 17:08:02,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:08:02,985 INFO L225 Difference]: With dead ends: 89 [2020-09-24 17:08:02,985 INFO L226 Difference]: Without dead ends: 80 [2020-09-24 17:08:02,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-09-24 17:08:02,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-24 17:08:02,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-09-24 17:08:02,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-24 17:08:02,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-09-24 17:08:02,995 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 85 [2020-09-24 17:08:02,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:08:02,996 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-09-24 17:08:02,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 17:08:02,996 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-09-24 17:08:02,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 17:08:02,997 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:08:02,997 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, 1] [2020-09-24 17:08:02,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 17:08:02,998 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:08:02,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:08:02,998 INFO L82 PathProgramCache]: Analyzing trace with hash 578402155, now seen corresponding path program 1 times [2020-09-24 17:08:02,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:08:02,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887962499] [2020-09-24 17:08:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:08:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:08:03,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:03,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:03,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:06,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:08:06,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking...