/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:26:15,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:26:15,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:26:15,888 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:26:15,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:26:15,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:26:15,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:26:15,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:26:15,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:26:15,896 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:26:15,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:26:15,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:26:15,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:26:15,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:26:15,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:26:15,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:26:15,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:26:15,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:26:15,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:26:15,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:26:15,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:26:15,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:26:15,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:26:15,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:26:15,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:26:15,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:26:15,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:26:15,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:26:15,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:26:15,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:26:15,924 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:26:15,925 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:26:15,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:26:15,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:26:15,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:26:15,928 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:26:15,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:26:15,929 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:26:15,929 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:26:15,930 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:26:15,931 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:26:15,932 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 12:26:15,958 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:26:15,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:26:15,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:26:15,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:26:15,960 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:26:15,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:26:15,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:26:15,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:26:15,961 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:26:15,961 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:26:15,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:26:15,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:26:15,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:26:15,962 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:26:15,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:26:15,963 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:26:15,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:26:15,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:26:15,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:26:15,964 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:26:15,964 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:26:15,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:26:15,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:26:15,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:26:15,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:26:15,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:26:15,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:26:15,965 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:26:15,965 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:26:15,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:26:16,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:26:16,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:26:16,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:26:16,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:26:16,450 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:26:16,451 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-09-21 12:26:16,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ceb51e518/3228b4540f4f42849fb6fbfcd9fe2922/FLAGa66b1c742 [2020-09-21 12:26:17,131 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:26:17,132 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-09-21 12:26:17,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ceb51e518/3228b4540f4f42849fb6fbfcd9fe2922/FLAGa66b1c742 [2020-09-21 12:26:17,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ceb51e518/3228b4540f4f42849fb6fbfcd9fe2922 [2020-09-21 12:26:17,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:26:17,404 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:26:17,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:26:17,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:26:17,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:26:17,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:26:17" (1/1) ... [2020-09-21 12:26:17,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a56ccca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:17, skipping insertion in model container [2020-09-21 12:26:17,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:26:17" (1/1) ... [2020-09-21 12:26:17,429 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:26:17,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:26:17,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:26:18,085 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:26:18,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:26:18,249 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:26:18,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:18 WrapperNode [2020-09-21 12:26:18,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:26:18,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:26:18,251 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:26:18,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:26:18,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:18" (1/1) ... [2020-09-21 12:26:18,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:18" (1/1) ... [2020-09-21 12:26:18,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:18" (1/1) ... [2020-09-21 12:26:18,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:18" (1/1) ... [2020-09-21 12:26:18,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:18" (1/1) ... [2020-09-21 12:26:18,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:18" (1/1) ... [2020-09-21 12:26:18,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:18" (1/1) ... [2020-09-21 12:26:18,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:26:18,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:26:18,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:26:18,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:26:18,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:26:18,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:26:18,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:26:18,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-21 12:26:18,438 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-09-21 12:26:18,438 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-09-21 12:26:18,438 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-09-21 12:26:18,439 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-09-21 12:26:18,440 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:26:18,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:26:18,441 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-21 12:26:18,441 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-09-21 12:26:18,441 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-09-21 12:26:18,441 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-09-21 12:26:18,441 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-09-21 12:26:18,442 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-09-21 12:26:18,443 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-09-21 12:26:18,443 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-09-21 12:26:18,443 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-09-21 12:26:18,443 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-09-21 12:26:18,444 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-09-21 12:26:18,445 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-09-21 12:26:18,445 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-09-21 12:26:18,445 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-09-21 12:26:18,445 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-09-21 12:26:18,446 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-09-21 12:26:18,448 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-09-21 12:26:18,448 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-09-21 12:26:18,448 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-09-21 12:26:18,448 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-09-21 12:26:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-09-21 12:26:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-09-21 12:26:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-09-21 12:26:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-09-21 12:26:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-09-21 12:26:18,449 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-09-21 12:26:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-09-21 12:26:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-09-21 12:26:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-09-21 12:26:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-21 12:26:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-09-21 12:26:18,450 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-09-21 12:26:18,451 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-09-21 12:26:18,451 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-09-21 12:26:18,451 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-09-21 12:26:18,451 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-09-21 12:26:18,453 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-09-21 12:26:18,453 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-09-21 12:26:18,453 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-09-21 12:26:18,453 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 12:26:18,453 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-09-21 12:26:18,453 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-09-21 12:26:18,454 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-09-21 12:26:18,454 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-09-21 12:26:18,454 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-09-21 12:26:18,454 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-09-21 12:26:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-09-21 12:26:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-09-21 12:26:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-09-21 12:26:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-09-21 12:26:18,455 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-09-21 12:26:18,456 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-09-21 12:26:18,456 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-09-21 12:26:18,456 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-09-21 12:26:18,456 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-09-21 12:26:18,456 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-21 12:26:18,457 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-09-21 12:26:18,457 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-09-21 12:26:18,457 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-09-21 12:26:18,457 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-09-21 12:26:18,457 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-09-21 12:26:18,457 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-09-21 12:26:18,459 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-09-21 12:26:18,459 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-09-21 12:26:18,459 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-09-21 12:26:18,460 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-09-21 12:26:18,460 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-09-21 12:26:18,460 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-09-21 12:26:18,461 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-09-21 12:26:18,461 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-09-21 12:26:18,461 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-09-21 12:26:18,461 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-09-21 12:26:18,461 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-09-21 12:26:18,461 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-09-21 12:26:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-09-21 12:26:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-09-21 12:26:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-09-21 12:26:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-09-21 12:26:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-09-21 12:26:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-09-21 12:26:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-09-21 12:26:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-09-21 12:26:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-09-21 12:26:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-09-21 12:26:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-09-21 12:26:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-09-21 12:26:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-09-21 12:26:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-09-21 12:26:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-09-21 12:26:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-09-21 12:26:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-09-21 12:26:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-09-21 12:26:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-09-21 12:26:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-09-21 12:26:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-09-21 12:26:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-09-21 12:26:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-09-21 12:26:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-09-21 12:26:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-09-21 12:26:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-09-21 12:26:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-09-21 12:26:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-09-21 12:26:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 12:26:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 12:26:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-21 12:26:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 12:26:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-21 12:26:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-09-21 12:26:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-21 12:26:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-09-21 12:26:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-09-21 12:26:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-09-21 12:26:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-09-21 12:26:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-09-21 12:26:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-09-21 12:26:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-09-21 12:26:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-09-21 12:26:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-09-21 12:26:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-09-21 12:26:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-09-21 12:26:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:26:18,476 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-09-21 12:26:18,476 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-09-21 12:26:18,476 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-09-21 12:26:18,476 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-09-21 12:26:18,477 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:26:18,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:26:18,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 12:26:18,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 12:26:18,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:26:18,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 12:26:18,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 12:26:18,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 12:26:19,002 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:26:19,003 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:26:19,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:26:19 BoogieIcfgContainer [2020-09-21 12:26:19,009 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:26:19,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:26:19,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:26:19,018 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:26:19,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:26:17" (1/3) ... [2020-09-21 12:26:19,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a031a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:26:19, skipping insertion in model container [2020-09-21 12:26:19,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:26:18" (2/3) ... [2020-09-21 12:26:19,020 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a031a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:26:19, skipping insertion in model container [2020-09-21 12:26:19,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:26:19" (3/3) ... [2020-09-21 12:26:19,023 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-09-21 12:26:19,035 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:26:19,045 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:26:19,067 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:26:19,095 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:26:19,095 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:26:19,095 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:26:19,095 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:26:19,095 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:26:19,096 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:26:19,096 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:26:19,096 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:26:19,120 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-09-21 12:26:19,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:26:19,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:19,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:26:19,130 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:19,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:19,138 INFO L82 PathProgramCache]: Analyzing trace with hash -573637036, now seen corresponding path program 1 times [2020-09-21 12:26:19,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:19,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147659037] [2020-09-21 12:26:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:19,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:19,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:19,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 12:26:19,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:19,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 377 [2020-09-21 12:26:19,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:19,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:26:19,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 12:26:19,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:26:19,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:26:19,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:19,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:19,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:19,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:19,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:19,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:26:19,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:19,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:19,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:19,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:26:19,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147659037] [2020-09-21 12:26:19,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:19,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 12:26:19,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185013444] [2020-09-21 12:26:19,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:26:19,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:19,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:26:19,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:26:19,986 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 7 states. [2020-09-21 12:26:20,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:20,432 INFO L93 Difference]: Finished difference Result 90 states and 119 transitions. [2020-09-21 12:26:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:26:20,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-09-21 12:26:20,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:20,450 INFO L225 Difference]: With dead ends: 90 [2020-09-21 12:26:20,450 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 12:26:20,456 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 [2020-09-21 12:26:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 12:26:20,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-09-21 12:26:20,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 12:26:20,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-21 12:26:20,522 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 13 [2020-09-21 12:26:20,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:20,522 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-21 12:26:20,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:26:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-21 12:26:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 12:26:20,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:20,525 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:26:20,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:26:20,526 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:20,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:20,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1917870949, now seen corresponding path program 1 times [2020-09-21 12:26:20,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:20,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545913555] [2020-09-21 12:26:20,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:20,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:20,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:20,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:21,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:21,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:21,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-21 12:26:21,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:26:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:26:21,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:26:21,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-21 12:26:21,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:26:21,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:21,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:21,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:21,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:21,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:21,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:21,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:26:21,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:21,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:21,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:21,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:26:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:21,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:21,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:21,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:26:21,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:21,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 12:26:21,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:21,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:21,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:21,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:21,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:21,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:21,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:21,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:26:21,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:21,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:21,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:21,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:26:21,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:21,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:21,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:21,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:26:21,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:21,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-21 12:26:21,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:26:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:21,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:26:21,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:21,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:21,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:21,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:21,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:21,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:21,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:26:21,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:26:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:21,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:26:21,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:21,862 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 12:26:21,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545913555] [2020-09-21 12:26:21,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:21,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-21 12:26:21,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037101288] [2020-09-21 12:26:21,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:26:21,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:21,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:26:21,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:26:21,867 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 9 states. [2020-09-21 12:26:22,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:22,123 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2020-09-21 12:26:22,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:26:22,124 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-21 12:26:22,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:22,126 INFO L225 Difference]: With dead ends: 69 [2020-09-21 12:26:22,126 INFO L226 Difference]: Without dead ends: 49 [2020-09-21 12:26:22,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:26:22,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-09-21 12:26:22,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-09-21 12:26:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-21 12:26:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-09-21 12:26:22,142 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 38 [2020-09-21 12:26:22,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:22,142 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-09-21 12:26:22,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:26:22,143 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-09-21 12:26:22,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 12:26:22,144 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:22,144 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:26:22,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:26:22,145 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:22,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:22,145 INFO L82 PathProgramCache]: Analyzing trace with hash 1624467942, now seen corresponding path program 1 times [2020-09-21 12:26:22,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:22,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121865812] [2020-09-21 12:26:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:22,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:22,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:23,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:23,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-21 12:26:23,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:26:23,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:26:23,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:23,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:26:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:26:23,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:26:23,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:23,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:23,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:23,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:23,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:23,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:23,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:26:23,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:23,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:23,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:23,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:23,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:23,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:26:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:23,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:23,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:23,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:26:23,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:23,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 12:26:23,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:26:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:26:23,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:23,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:23,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:23,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:23,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:23,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:23,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-21 12:26:23,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:26:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:23,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:26:23,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:23,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:26:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:23,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:23,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:23,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:26:23,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:23,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-21 12:26:23,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:23,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:23,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:26:23,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:23,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:23,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:23,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:23,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:23,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:26:23,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:23,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:23,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 12:26:23,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121865812] [2020-09-21 12:26:23,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:23,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:26:23,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172829975] [2020-09-21 12:26:23,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:26:23,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:23,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:26:23,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:26:23,517 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 9 states. [2020-09-21 12:26:23,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:23,725 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2020-09-21 12:26:23,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 12:26:23,725 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-09-21 12:26:23,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:23,727 INFO L225 Difference]: With dead ends: 71 [2020-09-21 12:26:23,727 INFO L226 Difference]: Without dead ends: 44 [2020-09-21 12:26:23,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:26:23,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-21 12:26:23,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-09-21 12:26:23,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-21 12:26:23,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-09-21 12:26:23,737 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 38 [2020-09-21 12:26:23,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:23,738 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-09-21 12:26:23,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:26:23,738 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-09-21 12:26:23,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-21 12:26:23,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:23,739 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:26:23,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:26:23,740 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:23,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:23,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1655487749, now seen corresponding path program 1 times [2020-09-21 12:26:23,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:23,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080243150] [2020-09-21 12:26:23,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:23,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:24,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:24,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:24,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-21 12:26:24,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:24,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-21 12:26:24,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 12:26:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:26:24,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-21 12:26:24,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:24,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:24,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:24,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:24,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:24,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:24,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-21 12:26:24,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:24,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:24,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:24,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:26:24,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:24,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:26:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:25,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:25,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:25,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:26:25,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:25,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:26:25,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:25,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:26:25,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:25,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:25,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:25,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:25,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:25,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:25,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:26:25,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:25,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:25,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:25,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:25,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:25,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:26:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:25,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:25,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:25,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:26:25,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:25,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:26:25,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:25,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:25,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:25,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:26:25,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:25,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:25,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:25,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:25,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:25,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:25,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:26:25,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:25,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:25,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:25,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:25,111 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 12:26:25,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080243150] [2020-09-21 12:26:25,112 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:26:25,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 12:26:25,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164785059] [2020-09-21 12:26:25,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:26:25,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:25,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:26:25,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:26:25,115 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 8 states. [2020-09-21 12:26:25,583 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2020-09-21 12:26:25,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:25,920 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2020-09-21 12:26:25,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 12:26:25,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-09-21 12:26:25,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:25,922 INFO L225 Difference]: With dead ends: 72 [2020-09-21 12:26:25,923 INFO L226 Difference]: Without dead ends: 69 [2020-09-21 12:26:25,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:26:25,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-21 12:26:25,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-09-21 12:26:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-21 12:26:25,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-09-21 12:26:25,937 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 38 [2020-09-21 12:26:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:25,938 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-09-21 12:26:25,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:26:25,938 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-09-21 12:26:25,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-21 12:26:25,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:25,940 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:26:25,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:26:25,940 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:25,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:25,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1321471087, now seen corresponding path program 1 times [2020-09-21 12:26:25,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:25,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826439559] [2020-09-21 12:26:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:25,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:25,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:26,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:26,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:26:26,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 800 [2020-09-21 12:26:26,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-21 12:26:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-21 12:26:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:26:26,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:26,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:26,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:26,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:26,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:26,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:26,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:26,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:26:26,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:26,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:26,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:26,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:26,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:26:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:26,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:26,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:26:26,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:26,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-21 12:26:26,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:26:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:26,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 12:26:26,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:26,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:26,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:27,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:27,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:27,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:27,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-21 12:26:27,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:27,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:26:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:27,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:26:27,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:27,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:26:27,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:27,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:27,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:27,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:26:27,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-21 12:26:27,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:26:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:26:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-21 12:26:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:27,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:27,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:27,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:27,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:27,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:27,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:27,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:26:27,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:26:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:26:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:26:27,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:27,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:26:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:27,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:27,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:27,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:27,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:27,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-21 12:26:27,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:27,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:26:27,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:27,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:26:27,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 12:26:27,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826439559] [2020-09-21 12:26:27,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:27,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-21 12:26:27,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373670018] [2020-09-21 12:26:27,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-21 12:26:27,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:27,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-21 12:26:27,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-09-21 12:26:27,462 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 23 states. [2020-09-21 12:26:28,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:28,682 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2020-09-21 12:26:28,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-21 12:26:28,683 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 45 [2020-09-21 12:26:28,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:28,687 INFO L225 Difference]: With dead ends: 81 [2020-09-21 12:26:28,688 INFO L226 Difference]: Without dead ends: 77 [2020-09-21 12:26:28,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2020-09-21 12:26:28,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-21 12:26:28,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2020-09-21 12:26:28,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-21 12:26:28,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2020-09-21 12:26:28,719 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 45 [2020-09-21 12:26:28,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:28,720 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2020-09-21 12:26:28,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-21 12:26:28,720 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2020-09-21 12:26:28,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-21 12:26:28,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:28,722 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-21 12:26:28,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:26:28,722 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:28,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:28,723 INFO L82 PathProgramCache]: Analyzing trace with hash 512124461, now seen corresponding path program 1 times [2020-09-21 12:26:28,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:28,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687047092] [2020-09-21 12:26:28,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:28,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:28,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:29,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:29,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-09-21 12:26:29,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:29,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:26:29,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:29,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-21 12:26:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-21 12:26:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-21 12:26:29,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:29,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:29,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:29,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:29,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:29,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:29,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:26:29,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:29,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:29,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:29,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-21 12:26:29,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:29,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:26:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:29,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:29,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:29,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:26:29,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:26:29,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:29,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:26:29,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:29,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:29,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:29,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:29,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:29,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:29,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:26:29,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:29,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:29,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:29,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:26:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:29,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:29,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:29,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:26:29,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:29,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:26:29,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:29,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:29,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:29,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 12:26:29,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:29,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:29,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:29,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:29,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:29,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:29,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:26:29,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:29,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:29,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:29,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:30,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:26:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:30,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:30,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:30,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:30,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:30,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-21 12:26:30,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:26:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:26:30,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:26:30,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:30,070 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-21 12:26:30,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687047092] [2020-09-21 12:26:30,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:30,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 12:26:30,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040086577] [2020-09-21 12:26:30,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 12:26:30,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:30,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 12:26:30,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 12:26:30,074 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand 9 states. [2020-09-21 12:26:30,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:30,659 INFO L93 Difference]: Finished difference Result 86 states and 99 transitions. [2020-09-21 12:26:30,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 12:26:30,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-09-21 12:26:30,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:30,661 INFO L225 Difference]: With dead ends: 86 [2020-09-21 12:26:30,661 INFO L226 Difference]: Without dead ends: 74 [2020-09-21 12:26:30,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-09-21 12:26:30,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-21 12:26:30,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 63. [2020-09-21 12:26:30,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-21 12:26:30,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-09-21 12:26:30,684 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 45 [2020-09-21 12:26:30,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:30,684 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-09-21 12:26:30,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 12:26:30,685 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-09-21 12:26:30,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:26:30,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:30,689 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-21 12:26:30,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:26:30,690 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:30,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:30,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1069126843, now seen corresponding path program 1 times [2020-09-21 12:26:30,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:30,693 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11796094] [2020-09-21 12:26:30,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:30,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:30,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:31,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:31,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:26:31,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:31,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1001 [2020-09-21 12:26:31,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-21 12:26:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-21 12:26:31,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-21 12:26:31,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:31,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:31,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:31,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:31,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:31,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:31,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:26:31,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:31,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:31,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:31,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:26:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:31,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:31,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:31,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:26:31,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:31,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:26:31,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:31,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:31,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:31,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:31,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:31,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:31,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:31,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:26:31,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:31,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:31,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:31,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:26:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:31,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:31,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:26:31,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:31,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 12:26:31,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:31,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:31,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:31,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:31,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:31,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:31,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:31,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:31,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:26:31,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:31,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:31,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:31,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:31,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:31,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:26:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:31,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:32,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:32,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:32,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:32,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:26:32,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:32,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:26:32,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:32,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-21 12:26:32,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:32,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:26:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:32,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:32,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:32,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:32,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:32,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-21 12:26:32,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:32,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:26:32,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-21 12:26:32,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 12:26:32,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:32,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:26:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:32,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:32,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:32,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:32,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:26:32,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:26:32,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-21 12:26:32,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:26:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:32,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:26:32,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:32,282 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-21 12:26:32,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11796094] [2020-09-21 12:26:32,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:32,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-21 12:26:32,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258830770] [2020-09-21 12:26:32,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-21 12:26:32,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:32,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-21 12:26:32,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:26:32,288 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 15 states. [2020-09-21 12:26:33,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:33,345 INFO L93 Difference]: Finished difference Result 86 states and 100 transitions. [2020-09-21 12:26:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-21 12:26:33,347 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-09-21 12:26:33,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:33,349 INFO L225 Difference]: With dead ends: 86 [2020-09-21 12:26:33,349 INFO L226 Difference]: Without dead ends: 70 [2020-09-21 12:26:33,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2020-09-21 12:26:33,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-21 12:26:33,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-09-21 12:26:33,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-21 12:26:33,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2020-09-21 12:26:33,377 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 57 [2020-09-21 12:26:33,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:33,377 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2020-09-21 12:26:33,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-21 12:26:33,377 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2020-09-21 12:26:33,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 12:26:33,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:33,381 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-21 12:26:33,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:26:33,381 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:33,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:33,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1291667455, now seen corresponding path program 1 times [2020-09-21 12:26:33,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:33,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952841429] [2020-09-21 12:26:33,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:33,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:33,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:34,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:34,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-21 12:26:34,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:26:34,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-21 12:26:34,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:34,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:26:34,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-21 12:26:34,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:26:34,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:34,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:26:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:34,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:34,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:34,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 12:26:34,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:26:34,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:34,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 12:26:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:34,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:34,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:34,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:26:34,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:34,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 12:26:34,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:34,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:34,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:34,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:34,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:34,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:34,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:34,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:34,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:26:34,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:34,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:34,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:34,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:34,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:34,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-21 12:26:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:34,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:34,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:34,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-21 12:26:34,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:34,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:26:34,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:34,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:34,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:34,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:34,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:34,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 12:26:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:34,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:34,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:34,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:34,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:34,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:26:34,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:26:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:34,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:26:34,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:34,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 12:26:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:34,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:34,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:34,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:34,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 12:26:34,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:34,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:34,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:34,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:26:34,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:26:34,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 12:26:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:34,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:34,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:34,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-21 12:26:34,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:34,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:26:34,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:26:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:26:34,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:34,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 12:26:34,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:26:34,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:26:34,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:26:34,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:26:34,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:26:34,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:26:34,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:26:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:26:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:26:34,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:26:34,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:26:34,732 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-21 12:26:34,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952841429] [2020-09-21 12:26:34,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:26:34,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:26:34,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065386914] [2020-09-21 12:26:34,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:26:34,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:26:34,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:26:34,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:26:34,735 INFO L87 Difference]: Start difference. First operand 68 states and 78 transitions. Second operand 10 states. [2020-09-21 12:26:35,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:26:35,330 INFO L93 Difference]: Finished difference Result 87 states and 97 transitions. [2020-09-21 12:26:35,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-21 12:26:35,330 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-09-21 12:26:35,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:26:35,332 INFO L225 Difference]: With dead ends: 87 [2020-09-21 12:26:35,332 INFO L226 Difference]: Without dead ends: 80 [2020-09-21 12:26:35,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-09-21 12:26:35,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-21 12:26:35,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-09-21 12:26:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-21 12:26:35,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 87 transitions. [2020-09-21 12:26:35,344 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 87 transitions. Word has length 57 [2020-09-21 12:26:35,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:26:35,345 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 87 transitions. [2020-09-21 12:26:35,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:26:35,345 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 87 transitions. [2020-09-21 12:26:35,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-21 12:26:35,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:26:35,346 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2020-09-21 12:26:35,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:26:35,347 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:26:35,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:26:35,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1118751113, now seen corresponding path program 1 times [2020-09-21 12:26:35,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:26:35,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866025610] [2020-09-21 12:26:35,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:26:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:26:35,375 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:26:35,375 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:26:35,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:26:35,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:26:35 BoogieIcfgContainer [2020-09-21 12:26:35,406 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:26:35,408 INFO L168 Benchmark]: Toolchain (without parser) took 18007.23 ms. Allocated memory was 137.9 MB in the beginning and 402.1 MB in the end (delta: 264.2 MB). Free memory was 100.3 MB in the beginning and 243.3 MB in the end (delta: -143.0 MB). Peak memory consumption was 121.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:35,409 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 12:26:35,410 INFO L168 Benchmark]: CACSL2BoogieTranslator took 843.79 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 99.7 MB in the beginning and 166.2 MB in the end (delta: -66.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:35,410 INFO L168 Benchmark]: Boogie Preprocessor took 98.02 ms. Allocated memory is still 201.3 MB. Free memory was 166.2 MB in the beginning and 163.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:35,411 INFO L168 Benchmark]: RCFGBuilder took 660.02 ms. Allocated memory is still 201.3 MB. Free memory was 163.3 MB in the beginning and 117.1 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:35,412 INFO L168 Benchmark]: TraceAbstraction took 16392.09 ms. Allocated memory was 201.3 MB in the beginning and 402.1 MB in the end (delta: 200.8 MB). Free memory was 117.1 MB in the beginning and 243.3 MB in the end (delta: -126.2 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 GB. [2020-09-21 12:26:35,416 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 843.79 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 99.7 MB in the beginning and 166.2 MB in the end (delta: -66.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.02 ms. Allocated memory is still 201.3 MB. Free memory was 166.2 MB in the beginning and 163.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 660.02 ms. Allocated memory is still 201.3 MB. Free memory was 163.3 MB in the beginning and 117.1 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 16392.09 ms. Allocated memory was 201.3 MB in the beginning and 402.1 MB in the end (delta: 200.8 MB). Free memory was 117.1 MB in the beginning and 243.3 MB in the end (delta: -126.2 MB). Peak memory consumption was 74.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L867] void * guard_malloc_counter = 0; [L887] struct list_head *elem = ((void *)0); [L900] static struct list_head head; [L903] struct list_head *dev1, *dev2; [L904] CALL, EXPR my_malloc(sizeof(*dev1)) [L879] CALL, EXPR __getMemory(size) [L871] (size > 0) ? (0) : __blast_assert () [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; [L879] RET, EXPR __getMemory(size) [L879] return __getMemory(size); [L904] RET, EXPR my_malloc(sizeof(*dev1)) [L904] dev1 = my_malloc(sizeof(*dev1)) [L905] CALL, EXPR my_malloc(sizeof(*dev2)) [L879] CALL, EXPR __getMemory(size) [L871] (size > 0) ? (0) : __blast_assert () [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; [L879] RET, EXPR __getMemory(size) [L879] return __getMemory(size); [L905] RET, EXPR my_malloc(sizeof(*dev2)) [L905] dev2 = my_malloc(sizeof(*dev2)) [L906] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) [L907] CALL list_add(dev2, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new [L907] RET list_add(dev2, &head) [L908] CALL list_add(dev1, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new [L908] RET list_add(dev1, &head) [L909] CALL list_del(dev2) [L896] COND FALSE !(entry==elem) [L909] RET list_del(dev2) [L910] CALL list_add(dev2, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND FALSE !(__VERIFIER_nondet_int()) [L910] RET list_add(dev2, &head) [L913] CALL list_add(dev1, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L890] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 16.2s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 342 SDtfs, 406 SDslu, 836 SDs, 0 SdLazy, 2650 SolverSat, 332 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 216 GetRequests, 84 SyntacticMatches, 2 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 36 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 395 NumberOfCodeBlocks, 395 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 62431 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 76/101 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...