/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 10:29:35,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 10:29:35,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 10:29:35,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 10:29:35,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 10:29:35,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 10:29:35,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 10:29:35,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 10:29:35,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 10:29:35,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 10:29:35,904 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 10:29:35,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 10:29:35,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 10:29:35,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 10:29:35,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 10:29:35,910 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 10:29:35,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 10:29:35,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 10:29:35,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 10:29:35,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 10:29:35,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 10:29:35,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 10:29:35,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 10:29:35,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 10:29:35,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 10:29:35,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 10:29:35,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 10:29:35,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 10:29:35,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 10:29:35,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 10:29:35,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 10:29:35,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 10:29:35,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 10:29:35,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 10:29:35,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 10:29:35,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 10:29:35,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 10:29:35,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 10:29:35,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 10:29:35,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 10:29:35,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 10:29:35,941 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-13 10:29:35,968 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 10:29:35,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 10:29:35,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 10:29:35,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 10:29:35,970 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 10:29:35,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 10:29:35,970 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 10:29:35,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 10:29:35,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 10:29:35,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 10:29:35,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 10:29:35,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 10:29:35,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 10:29:35,972 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 10:29:35,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 10:29:35,972 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 10:29:35,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 10:29:35,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 10:29:35,973 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 10:29:35,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 10:29:35,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 10:29:35,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:29:35,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 10:29:35,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 10:29:35,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 10:29:35,974 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 10:29:35,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 10:29:35,975 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 10:29:35,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 10:29:35,975 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=NARROWEST;log-additional-information=true;unknown-allowed=true; [2020-10-13 10:29:36,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 10:29:36,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 10:29:36,277 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 10:29:36,279 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 10:29:36,279 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 10:29:36,280 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-10-13 10:29:36,338 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d1020fcc/4a60bf3a50534edcb679c27456aa753b/FLAG928b84e11 [2020-10-13 10:29:36,868 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 10:29:36,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-10-13 10:29:36,880 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d1020fcc/4a60bf3a50534edcb679c27456aa753b/FLAG928b84e11 [2020-10-13 10:29:37,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d1020fcc/4a60bf3a50534edcb679c27456aa753b [2020-10-13 10:29:37,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 10:29:37,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 10:29:37,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 10:29:37,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 10:29:37,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 10:29:37,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:29:37" (1/1) ... [2020-10-13 10:29:37,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4572a173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:37, skipping insertion in model container [2020-10-13 10:29:37,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:29:37" (1/1) ... [2020-10-13 10:29:37,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 10:29:37,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 10:29:37,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:29:37,581 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 10:29:37,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 10:29:37,771 INFO L208 MainTranslator]: Completed translation [2020-10-13 10:29:37,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:37 WrapperNode [2020-10-13 10:29:37,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 10:29:37,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 10:29:37,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 10:29:37,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 10:29:37,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:37" (1/1) ... [2020-10-13 10:29:37,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:37" (1/1) ... [2020-10-13 10:29:37,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:37" (1/1) ... [2020-10-13 10:29:37,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:37" (1/1) ... [2020-10-13 10:29:37,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:37" (1/1) ... [2020-10-13 10:29:37,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:37" (1/1) ... [2020-10-13 10:29:37,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:37" (1/1) ... [2020-10-13 10:29:37,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 10:29:37,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 10:29:37,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 10:29:37,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 10:29:37,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 10:29:37,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 10:29:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 10:29:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-13 10:29:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-10-13 10:29:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-10-13 10:29:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-10-13 10:29:37,900 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-10-13 10:29:37,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 10:29:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 10:29:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-13 10:29:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-10-13 10:29:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-10-13 10:29:37,901 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-10-13 10:29:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-10-13 10:29:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-10-13 10:29:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-10-13 10:29:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-10-13 10:29:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-10-13 10:29:37,902 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-10-13 10:29:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-10-13 10:29:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-10-13 10:29:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-10-13 10:29:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-10-13 10:29:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-10-13 10:29:37,903 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-10-13 10:29:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-10-13 10:29:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-10-13 10:29:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-10-13 10:29:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-10-13 10:29:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-10-13 10:29:37,904 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-10-13 10:29:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-10-13 10:29:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-10-13 10:29:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-10-13 10:29:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-10-13 10:29:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-10-13 10:29:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-10-13 10:29:37,905 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-10-13 10:29:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-13 10:29:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-10-13 10:29:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-10-13 10:29:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-10-13 10:29:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-10-13 10:29:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-10-13 10:29:37,906 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-10-13 10:29:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-10-13 10:29:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-10-13 10:29:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-10-13 10:29:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-13 10:29:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-10-13 10:29:37,907 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-10-13 10:29:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-10-13 10:29:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-10-13 10:29:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-10-13 10:29:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-10-13 10:29:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-10-13 10:29:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-10-13 10:29:37,908 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-10-13 10:29:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-10-13 10:29:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-10-13 10:29:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-10-13 10:29:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-10-13 10:29:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-10-13 10:29:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-10-13 10:29:37,909 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-13 10:29:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-10-13 10:29:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-10-13 10:29:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-10-13 10:29:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-10-13 10:29:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-10-13 10:29:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-10-13 10:29:37,910 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-10-13 10:29:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-10-13 10:29:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-10-13 10:29:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-10-13 10:29:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-10-13 10:29:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-10-13 10:29:37,911 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-10-13 10:29:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-10-13 10:29:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-10-13 10:29:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-10-13 10:29:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-10-13 10:29:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-10-13 10:29:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-10-13 10:29:37,912 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-10-13 10:29:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-10-13 10:29:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-10-13 10:29:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-10-13 10:29:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-10-13 10:29:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-10-13 10:29:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-10-13 10:29:37,913 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-10-13 10:29:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-10-13 10:29:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-10-13 10:29:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-10-13 10:29:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-10-13 10:29:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-10-13 10:29:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-10-13 10:29:37,914 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-10-13 10:29:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-10-13 10:29:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-10-13 10:29:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-10-13 10:29:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-10-13 10:29:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-10-13 10:29:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-10-13 10:29:37,915 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-10-13 10:29:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-10-13 10:29:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-10-13 10:29:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-10-13 10:29:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-10-13 10:29:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-10-13 10:29:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-13 10:29:37,916 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-13 10:29:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-13 10:29:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-13 10:29:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-13 10:29:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-10-13 10:29:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-13 10:29:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-10-13 10:29:37,917 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-10-13 10:29:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-10-13 10:29:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-10-13 10:29:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-10-13 10:29:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-10-13 10:29:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-10-13 10:29:37,918 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-10-13 10:29:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-10-13 10:29:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-10-13 10:29:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-10-13 10:29:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 10:29:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-10-13 10:29:37,919 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-10-13 10:29:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-10-13 10:29:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-10-13 10:29:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 10:29:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 10:29:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 10:29:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-13 10:29:37,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 10:29:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-13 10:29:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-13 10:29:37,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 10:29:38,421 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 10:29:38,422 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-13 10:29:38,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:29:38 BoogieIcfgContainer [2020-10-13 10:29:38,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 10:29:38,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 10:29:38,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 10:29:38,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 10:29:38,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:29:37" (1/3) ... [2020-10-13 10:29:38,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f838af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:29:38, skipping insertion in model container [2020-10-13 10:29:38,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:29:37" (2/3) ... [2020-10-13 10:29:38,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f838af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:29:38, skipping insertion in model container [2020-10-13 10:29:38,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:29:38" (3/3) ... [2020-10-13 10:29:38,435 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-10-13 10:29:38,445 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 10:29:38,452 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 10:29:38,466 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 10:29:38,489 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 10:29:38,489 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 10:29:38,489 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 10:29:38,489 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 10:29:38,490 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 10:29:38,490 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 10:29:38,490 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 10:29:38,490 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 10:29:38,510 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-10-13 10:29:38,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-13 10:29:38,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:29:38,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 10:29:38,517 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:29:38,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:29:38,524 INFO L82 PathProgramCache]: Analyzing trace with hash -573637036, now seen corresponding path program 1 times [2020-10-13 10:29:38,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:29:38,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704217019] [2020-10-13 10:29:38,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:29:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:38,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:38,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:38,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 10:29:38,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:38,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-13 10:29:38,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:38,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:29:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-13 10:29:38,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:29:38,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:29:39,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:29:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:39,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:39,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:39,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:39,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:39,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:29:39,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:39,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:39,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:39,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:39,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 10:29:39,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704217019] [2020-10-13 10:29:39,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:29:39,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-13 10:29:39,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904688450] [2020-10-13 10:29:39,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 10:29:39,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:29:39,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 10:29:39,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-13 10:29:39,091 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 7 states. [2020-10-13 10:29:39,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:29:39,567 INFO L93 Difference]: Finished difference Result 90 states and 119 transitions. [2020-10-13 10:29:39,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:29:39,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-13 10:29:39,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:29:39,590 INFO L225 Difference]: With dead ends: 90 [2020-10-13 10:29:39,591 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 10:29:39,598 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 [2020-10-13 10:29:39,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 10:29:39,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-13 10:29:39,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-13 10:29:39,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-10-13 10:29:39,686 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 13 [2020-10-13 10:29:39,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:29:39,687 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-10-13 10:29:39,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 10:29:39,687 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-10-13 10:29:39,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:29:39,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:29:39,691 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] [2020-10-13 10:29:39,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 10:29:39,692 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:29:39,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:29:39,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1917870949, now seen corresponding path program 1 times [2020-10-13 10:29:39,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:29:39,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144777486] [2020-10-13 10:29:39,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:29:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:39,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:40,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:42,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:42,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:29:42,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:29:42,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2845 [2020-10-13 10:29:42,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:42,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:29:42,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 10:29:42,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:29:42,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:29:42,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:29:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:42,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:42,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:42,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:42,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:42,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:29:42,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:42,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:42,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:42,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:42,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:42,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:29:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:42,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:42,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:42,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:42,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:42,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:29:42,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:42,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:42,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:42,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:42,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:42,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:42,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:29:42,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:42,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:42,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:42,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:42,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:42,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:29:42,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:42,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:42,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:42,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:42,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:42,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-13 10:29:42,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:42,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:29:42,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:42,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:29:42,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:42,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:42,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:42,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:42,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:42,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:42,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-13 10:29:42,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:42,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:29:42,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:42,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:29:42,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:42,866 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 10:29:42,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144777486] [2020-10-13 10:29:42,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:29:42,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-13 10:29:42,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214358249] [2020-10-13 10:29:42,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:29:42,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:29:42,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:29:42,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:29:42,871 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 9 states. [2020-10-13 10:29:43,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:29:43,149 INFO L93 Difference]: Finished difference Result 69 states and 82 transitions. [2020-10-13 10:29:43,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:29:43,150 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-13 10:29:43,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:29:43,152 INFO L225 Difference]: With dead ends: 69 [2020-10-13 10:29:43,152 INFO L226 Difference]: Without dead ends: 49 [2020-10-13 10:29:43,154 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 [2020-10-13 10:29:43,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-13 10:29:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2020-10-13 10:29:43,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-13 10:29:43,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-10-13 10:29:43,168 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 38 [2020-10-13 10:29:43,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:29:43,169 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-10-13 10:29:43,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:29:43,169 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-10-13 10:29:43,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:29:43,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:29:43,171 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] [2020-10-13 10:29:43,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 10:29:43,172 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:29:43,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:29:43,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1624467942, now seen corresponding path program 1 times [2020-10-13 10:29:43,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:29:43,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165995680] [2020-10-13 10:29:43,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:29:43,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:43,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:43,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:43,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:43,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:43,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:29:43,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:29:43,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 760 [2020-10-13 10:29:43,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:29:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:29:43,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-13 10:29:43,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:44,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:29:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:44,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:44,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:44,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:44,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:44,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:29:44,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:44,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:44,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:44,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:44,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:29:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:44,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:44,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:44,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:44,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:44,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-13 10:29:44,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:29:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:44,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:29:44,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:44,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:44,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:44,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:44,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:44,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:44,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 10:29:44,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:44,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:29:44,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:44,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:29:44,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:44,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:29:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:44,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:44,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:44,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:44,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:44,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 10:29:44,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:29:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:29:44,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:44,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:44,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:44,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:44,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:44,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:44,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:44,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:29:44,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:44,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:44,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:44,194 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-13 10:29:44,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165995680] [2020-10-13 10:29:44,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:29:44,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 10:29:44,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173192085] [2020-10-13 10:29:44,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 10:29:44,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:29:44,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 10:29:44,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-13 10:29:44,197 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 9 states. [2020-10-13 10:29:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:29:44,398 INFO L93 Difference]: Finished difference Result 71 states and 84 transitions. [2020-10-13 10:29:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 10:29:44,399 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-10-13 10:29:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:29:44,400 INFO L225 Difference]: With dead ends: 71 [2020-10-13 10:29:44,400 INFO L226 Difference]: Without dead ends: 44 [2020-10-13 10:29:44,401 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 [2020-10-13 10:29:44,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-13 10:29:44,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-10-13 10:29:44,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-13 10:29:44,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-13 10:29:44,410 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 38 [2020-10-13 10:29:44,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:29:44,410 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-13 10:29:44,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 10:29:44,410 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-13 10:29:44,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-13 10:29:44,411 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:29:44,412 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] [2020-10-13 10:29:44,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 10:29:44,412 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:29:44,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:29:44,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1655487749, now seen corresponding path program 1 times [2020-10-13 10:29:44,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:29:44,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870849402] [2020-10-13 10:29:44,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:29:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:44,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:44,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:44,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:44,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-13 10:29:44,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:29:44,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 415 [2020-10-13 10:29:44,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 10:29:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:29:44,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 10:29:44,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:44,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:29:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:44,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:44,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:44,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:44,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:44,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:29:44,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:44,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:29:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:44,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:29:44,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:44,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:29:44,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:44,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:44,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:44,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:44,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 10:29:44,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:29:44,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:44,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:29:44,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:44,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:44,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:44,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:44,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:44,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:44,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:29:45,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:45,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:45,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:45,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:29:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:45,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:45,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:45,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:45,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:45,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-13 10:29:45,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:45,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:29:45,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:45,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:29:45,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:45,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:45,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:45,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:45,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:45,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:45,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:29:45,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:45,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:45,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:45,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-13 10:29:45,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870849402] [2020-10-13 10:29:45,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 10:29:45,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 10:29:45,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211188708] [2020-10-13 10:29:45,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 10:29:45,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:29:45,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 10:29:45,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 10:29:45,045 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 8 states. [2020-10-13 10:29:45,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:29:45,605 INFO L93 Difference]: Finished difference Result 72 states and 86 transitions. [2020-10-13 10:29:45,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:29:45,605 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-10-13 10:29:45,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:29:45,607 INFO L225 Difference]: With dead ends: 72 [2020-10-13 10:29:45,607 INFO L226 Difference]: Without dead ends: 69 [2020-10-13 10:29:45,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-13 10:29:45,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-13 10:29:45,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-10-13 10:29:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-13 10:29:45,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2020-10-13 10:29:45,621 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 38 [2020-10-13 10:29:45,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:29:45,621 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2020-10-13 10:29:45,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 10:29:45,622 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2020-10-13 10:29:45,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 10:29:45,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:29:45,623 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] [2020-10-13 10:29:45,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 10:29:45,624 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:29:45,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:29:45,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1321471087, now seen corresponding path program 1 times [2020-10-13 10:29:45,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:29:45,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390959712] [2020-10-13 10:29:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:29:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:45,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:46,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:46,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 10:29:46,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:46,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 362 [2020-10-13 10:29:46,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:46,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 10:29:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-13 10:29:46,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-13 10:29:46,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:46,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:29:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:46,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:46,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:46,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:46,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:46,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:29:46,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:46,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:46,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:46,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:46,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:29:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:46,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:46,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:46,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:46,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:46,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-13 10:29:46,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:29:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 10:29:46,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:46,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:46,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:46,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:46,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:46,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:46,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:29:46,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:29:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:46,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:29:46,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:46,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:29:46,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:46,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:46,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:46,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:46,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:46,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-13 10:29:46,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:46,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:29:46,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:46,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:29:46,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:46,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:46,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:46,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:46,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:46,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:46,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:29:46,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:46,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:29:46,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:46,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:29:46,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:46,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:29:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:46,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:46,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:46,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:46,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:46,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:29:46,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 10:29:46,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:29:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:46,414 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:29:46,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390959712] [2020-10-13 10:29:46,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:29:46,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 10:29:46,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537442978] [2020-10-13 10:29:46,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 10:29:46,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:29:46,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 10:29:46,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=417, Unknown=0, NotChecked=0, Total=462 [2020-10-13 10:29:46,417 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 22 states. [2020-10-13 10:29:47,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:29:47,488 INFO L93 Difference]: Finished difference Result 81 states and 102 transitions. [2020-10-13 10:29:47,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 10:29:47,488 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 45 [2020-10-13 10:29:47,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:29:47,491 INFO L225 Difference]: With dead ends: 81 [2020-10-13 10:29:47,491 INFO L226 Difference]: Without dead ends: 77 [2020-10-13 10:29:47,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=135, Invalid=1125, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 10:29:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-13 10:29:47,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 73. [2020-10-13 10:29:47,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-13 10:29:47,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 87 transitions. [2020-10-13 10:29:47,507 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 87 transitions. Word has length 45 [2020-10-13 10:29:47,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:29:47,508 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 87 transitions. [2020-10-13 10:29:47,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 10:29:47,508 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 87 transitions. [2020-10-13 10:29:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 10:29:47,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:29:47,509 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] [2020-10-13 10:29:47,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 10:29:47,510 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:29:47,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:29:47,510 INFO L82 PathProgramCache]: Analyzing trace with hash 512124461, now seen corresponding path program 1 times [2020-10-13 10:29:47,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:29:47,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147044865] [2020-10-13 10:29:47,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:29:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:47,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:47,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:48,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:48,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-13 10:29:48,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 10:29:48,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 498 [2020-10-13 10:29:48,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 10:29:48,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-13 10:29:48,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 10:29:48,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:48,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:29:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:48,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:48,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:48,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:48,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:48,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-13 10:29:48,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:48,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:29:48,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:48,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 10:29:48,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:48,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:29:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:48,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:48,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:48,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:48,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:48,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-13 10:29:48,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 10:29:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:48,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 10:29:48,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:48,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:48,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:48,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:48,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:48,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:48,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-13 10:29:48,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:48,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:29:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:48,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:29:48,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:48,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:29:48,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:48,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:48,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:48,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:48,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:48,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-13 10:29:48,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:29:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:48,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-13 10:29:48,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 10:29:48,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:48,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:48,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:48,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:48,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:48,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:29:48,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:48,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:48,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:48,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:48,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:48,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:29:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:48,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:48,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:48,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:48,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:48,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:29:48,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:48,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:29:48,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:48,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:29:48,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-13 10:29:48,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147044865] [2020-10-13 10:29:48,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:29:48,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 10:29:48,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637279365] [2020-10-13 10:29:48,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 10:29:48,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:29:48,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 10:29:48,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:29:48,356 INFO L87 Difference]: Start difference. First operand 73 states and 87 transitions. Second operand 16 states. [2020-10-13 10:29:48,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:29:48,958 INFO L93 Difference]: Finished difference Result 91 states and 107 transitions. [2020-10-13 10:29:48,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:29:48,959 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 45 [2020-10-13 10:29:48,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:29:48,961 INFO L225 Difference]: With dead ends: 91 [2020-10-13 10:29:48,961 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 10:29:48,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=499, Unknown=0, NotChecked=0, Total=600 [2020-10-13 10:29:48,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 10:29:48,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 71. [2020-10-13 10:29:48,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-13 10:29:48,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 82 transitions. [2020-10-13 10:29:48,985 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 82 transitions. Word has length 45 [2020-10-13 10:29:48,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:29:48,985 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 82 transitions. [2020-10-13 10:29:48,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 10:29:48,985 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 82 transitions. [2020-10-13 10:29:48,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:29:48,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:29:48,989 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] [2020-10-13 10:29:48,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 10:29:48,990 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:29:48,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:29:48,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1069126843, now seen corresponding path program 1 times [2020-10-13 10:29:48,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:29:48,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283286839] [2020-10-13 10:29:48,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:29:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:49,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:49,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:52,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:52,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 10:29:52,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 10:29:52,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3408 [2020-10-13 10:29:52,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:52,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 10:29:52,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-13 10:29:52,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:29:52,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:52,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:29:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:52,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:52,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:52,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:52,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:52,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:29:52,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:52,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:52,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:52,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:52,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:29:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:52,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:52,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:52,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:52,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:52,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:29:52,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:52,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:52,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:52,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:52,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:52,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:52,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:52,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:52,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:52,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:52,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:29:52,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:52,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:52,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:29:52,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:29:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:52,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:52,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:52,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:52,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:52,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:29:52,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:52,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:52,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:52,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:52,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:52,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:52,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:52,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:52,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:29:52,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:52,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:52,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:52,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:29:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:52,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:52,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:52,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:52,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:52,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:29:52,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:52,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:52,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:52,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:29:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:52,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:52,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:52,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:52,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:52,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:29:52,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:52,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:52,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:52,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:29:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:52,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:52,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:52,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:29:52,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:52,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:29:52,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:29:52,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:52,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-13 10:29:52,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:52,612 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 10:29:52,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283286839] [2020-10-13 10:29:52,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:29:52,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:29:52,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494604284] [2020-10-13 10:29:52,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:29:52,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:29:52,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:29:52,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:29:52,617 INFO L87 Difference]: Start difference. First operand 71 states and 82 transitions. Second operand 10 states. [2020-10-13 10:29:53,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:29:53,008 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2020-10-13 10:29:53,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 10:29:53,009 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-13 10:29:53,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:29:53,011 INFO L225 Difference]: With dead ends: 82 [2020-10-13 10:29:53,011 INFO L226 Difference]: Without dead ends: 78 [2020-10-13 10:29:53,011 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-10-13 10:29:53,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-13 10:29:53,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-13 10:29:53,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 10:29:53,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 88 transitions. [2020-10-13 10:29:53,022 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 88 transitions. Word has length 57 [2020-10-13 10:29:53,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:29:53,023 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 88 transitions. [2020-10-13 10:29:53,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:29:53,023 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 88 transitions. [2020-10-13 10:29:53,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:29:53,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:29:53,025 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] [2020-10-13 10:29:53,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 10:29:53,025 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:29:53,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:29:53,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1878473469, now seen corresponding path program 1 times [2020-10-13 10:29:53,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:29:53,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373450109] [2020-10-13 10:29:53,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:29:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:53,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:53,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:53,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:54,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:54,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:58,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:58,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 10:29:58,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-13 10:29:58,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 10:29:58,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 10:29:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-13 10:29:58,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-13 10:29:58,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:58,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:29:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:58,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:58,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:58,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:29:58,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:58,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:29:58,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:58,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:58,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:58,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:29:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:58,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:58,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:58,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:58,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:58,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 10:29:58,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:58,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:58,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:58,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:58,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:58,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:58,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:58,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:29:58,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:58,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:58,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:58,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:29:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:58,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:58,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:58,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:29:58,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:58,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:29:58,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:58,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:58,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:58,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:58,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:58,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:29:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:58,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:58,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:58,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:58,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:58,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 10:29:58,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:29:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:58,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:29:58,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:58,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:29:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:58,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:58,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:58,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:58,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:58,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:29:58,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 10:29:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:29:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:29:58,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:58,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:29:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:58,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:58,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:58,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:29:58,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:58,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-13 10:29:58,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:29:58,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:58,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 10:29:58,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:58,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:29:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:58,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:58,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:29:58,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:29:58,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:29:58,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:29:58,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:29:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 10:29:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-13 10:29:58,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-13 10:29:58,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:29:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-13 10:29:58,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373450109] [2020-10-13 10:29:58,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:29:58,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 10:29:58,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147071535] [2020-10-13 10:29:58,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 10:29:58,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:29:58,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 10:29:58,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-13 10:29:58,318 INFO L87 Difference]: Start difference. First operand 77 states and 88 transitions. Second operand 13 states. [2020-10-13 10:29:59,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:29:59,059 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2020-10-13 10:29:59,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 10:29:59,059 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2020-10-13 10:29:59,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:29:59,061 INFO L225 Difference]: With dead ends: 103 [2020-10-13 10:29:59,061 INFO L226 Difference]: Without dead ends: 74 [2020-10-13 10:29:59,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2020-10-13 10:29:59,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-13 10:29:59,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 72. [2020-10-13 10:29:59,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-13 10:29:59,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-10-13 10:29:59,071 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 57 [2020-10-13 10:29:59,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:29:59,071 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-10-13 10:29:59,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 10:29:59,071 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-10-13 10:29:59,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-13 10:29:59,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:29:59,073 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] [2020-10-13 10:29:59,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 10:29:59,073 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:29:59,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:29:59,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1291667455, now seen corresponding path program 1 times [2020-10-13 10:29:59,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:29:59,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222804936] [2020-10-13 10:29:59,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:29:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:29:59,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:59,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:59,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:29:59,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:01,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:01,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-13 10:30:01,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 10:30:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1914 [2020-10-13 10:30:01,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 10:30:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-13 10:30:01,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-13 10:30:01,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:01,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 10:30:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:01,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:01,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:01,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 10:30:01,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:01,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 10:30:01,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:01,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:01,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:01,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:01,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:01,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-13 10:30:01,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:01,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:01,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:01,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:30:01,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:01,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 10:30:01,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:01,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:01,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:01,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:01,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:30:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:01,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:01,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:01,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:30:01,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:01,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:01,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:01,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:01,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:01,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-13 10:30:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:01,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:01,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:01,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-13 10:30:01,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:01,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:01,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:01,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:01,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:01,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:01,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 10:30:01,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-13 10:30:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:01,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:01,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:01,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:30:01,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:01,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 10:30:01,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:01,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 10:30:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:01,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 10:30:01,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:01,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-13 10:30:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:01,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:01,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:01,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:30:01,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:01,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:30:01,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:30:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:01,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:30:01,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:01,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-13 10:30:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:01,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:01,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-13 10:30:01,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:30:01,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 10:30:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 10:30:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:01,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-13 10:30:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 10:30:01,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 10:30:01,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 10:30:01,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 10:30:01,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 10:30:01,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 10:30:01,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-10-13 10:30:01,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 10:30:01,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 10:30:01,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 10:30:01,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 10:30:01,257 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-13 10:30:01,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222804936] [2020-10-13 10:30:01,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 10:30:01,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 10:30:01,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761015039] [2020-10-13 10:30:01,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 10:30:01,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 10:30:01,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 10:30:01,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-13 10:30:01,260 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 10 states. [2020-10-13 10:30:01,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 10:30:01,817 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-13 10:30:01,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 10:30:01,818 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-13 10:30:01,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 10:30:01,819 INFO L225 Difference]: With dead ends: 91 [2020-10-13 10:30:01,819 INFO L226 Difference]: Without dead ends: 80 [2020-10-13 10:30:01,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-13 10:30:01,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-13 10:30:01,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2020-10-13 10:30:01,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-13 10:30:01,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-10-13 10:30:01,829 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 57 [2020-10-13 10:30:01,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 10:30:01,830 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-10-13 10:30:01,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 10:30:01,830 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-10-13 10:30:01,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-13 10:30:01,831 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 10:30:01,831 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] [2020-10-13 10:30:01,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 10:30:01,832 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 10:30:01,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 10:30:01,832 INFO L82 PathProgramCache]: Analyzing trace with hash -1118751113, now seen corresponding path program 1 times [2020-10-13 10:30:01,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 10:30:01,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460176413] [2020-10-13 10:30:01,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 10:30:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-13 10:30:01,848 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-13 10:30:01,848 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-13 10:30:01,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 10:30:01,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 10:30:01 BoogieIcfgContainer [2020-10-13 10:30:01,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-13 10:30:01,876 INFO L168 Benchmark]: Toolchain (without parser) took 24663.95 ms. Allocated memory was 145.8 MB in the beginning and 692.6 MB in the end (delta: 546.8 MB). Free memory was 100.5 MB in the beginning and 167.9 MB in the end (delta: -67.5 MB). Peak memory consumption was 479.4 MB. Max. memory is 7.1 GB. [2020-10-13 10:30:01,877 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-13 10:30:01,878 INFO L168 Benchmark]: CACSL2BoogieTranslator took 559.48 ms. Allocated memory was 145.8 MB in the beginning and 216.5 MB in the end (delta: 70.8 MB). Free memory was 100.2 MB in the beginning and 189.7 MB in the end (delta: -89.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-10-13 10:30:01,878 INFO L168 Benchmark]: Boogie Preprocessor took 56.61 ms. Allocated memory is still 216.5 MB. Free memory was 189.7 MB in the beginning and 186.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-10-13 10:30:01,879 INFO L168 Benchmark]: RCFGBuilder took 596.82 ms. Allocated memory is still 216.5 MB. Free memory was 186.5 MB in the beginning and 139.9 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. [2020-10-13 10:30:01,880 INFO L168 Benchmark]: TraceAbstraction took 23445.52 ms. Allocated memory was 216.5 MB in the beginning and 692.6 MB in the end (delta: 476.1 MB). Free memory was 139.9 MB in the beginning and 167.9 MB in the end (delta: -28.0 MB). Peak memory consumption was 448.1 MB. Max. memory is 7.1 GB. [2020-10-13 10:30:01,884 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 559.48 ms. Allocated memory was 145.8 MB in the beginning and 216.5 MB in the end (delta: 70.8 MB). Free memory was 100.2 MB in the beginning and 189.7 MB in the end (delta: -89.5 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.61 ms. Allocated memory is still 216.5 MB. Free memory was 189.7 MB in the beginning and 186.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 596.82 ms. Allocated memory is still 216.5 MB. Free memory was 186.5 MB in the beginning and 139.9 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23445.52 ms. Allocated memory was 216.5 MB in the beginning and 692.6 MB in the end (delta: 476.1 MB). Free memory was 139.9 MB in the beginning and 167.9 MB in the end (delta: -28.0 MB). Peak memory consumption was 448.1 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: 23.3s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 4.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 369 SDtfs, 427 SDslu, 868 SDs, 0 SdLazy, 3108 SolverSat, 356 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 247 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=7, 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, 9 MinimizatonAttempts, 49 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 17.7s InterpolantComputationTime, 452 NumberOfCodeBlocks, 452 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 379 ConstructedInterpolants, 0 QuantifiedInterpolants, 68489 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 90/122 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...