/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:36:01,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:36:01,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:36:01,801 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:36:01,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:36:01,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:36:01,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:36:01,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:36:01,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:36:01,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:36:01,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:36:01,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:36:01,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:36:01,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:36:01,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:36:01,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:36:01,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:36:01,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:36:01,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:36:01,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:36:01,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:36:01,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:36:01,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:36:01,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:36:01,866 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:36:01,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:36:01,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:36:01,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:36:01,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:36:01,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:36:01,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:36:01,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:36:01,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:36:01,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:36:01,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:36:01,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:36:01,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:36:01,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:36:01,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:36:01,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:36:01,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:36:01,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 14:36:01,937 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:36:01,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:36:01,939 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:36:01,939 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:36:01,939 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:36:01,940 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:36:01,940 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:36:01,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:36:01,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:36:01,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:36:01,942 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:36:01,942 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:36:01,942 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:36:01,943 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:36:01,943 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:36:01,943 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:36:01,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:36:01,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:36:01,944 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:36:01,944 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:36:01,944 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:36:01,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:01,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:36:01,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:36:01,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:36:01,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:36:01,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:36:01,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:36:01,946 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:36:01,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:36:02,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:36:02,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:36:02,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:36:02,448 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:36:02,448 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:36:02,450 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 14:36:02,540 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a6c39151/33f4dd5207db4266a070cae2effe4348/FLAG65ff5495b [2020-09-25 14:36:03,248 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:36:03,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-09-25 14:36:03,270 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a6c39151/33f4dd5207db4266a070cae2effe4348/FLAG65ff5495b [2020-09-25 14:36:03,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a6c39151/33f4dd5207db4266a070cae2effe4348 [2020-09-25 14:36:03,425 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:36:03,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:36:03,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:03,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:36:03,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:36:03,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:03" (1/1) ... [2020-09-25 14:36:03,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783e84ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:03, skipping insertion in model container [2020-09-25 14:36:03,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:36:03" (1/1) ... [2020-09-25 14:36:03,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:36:03,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:36:03,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:03,972 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:36:04,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:36:04,075 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:36:04,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:04 WrapperNode [2020-09-25 14:36:04,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:36:04,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:36:04,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:36:04,077 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:36:04,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:04" (1/1) ... [2020-09-25 14:36:04,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:04" (1/1) ... [2020-09-25 14:36:04,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:04" (1/1) ... [2020-09-25 14:36:04,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:04" (1/1) ... [2020-09-25 14:36:04,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:04" (1/1) ... [2020-09-25 14:36:04,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:04" (1/1) ... [2020-09-25 14:36:04,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:04" (1/1) ... [2020-09-25 14:36:04,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:36:04,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:36:04,161 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:36:04,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:36:04,162 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:36:04,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:36:04,241 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:36:04,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-25 14:36:04,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-25 14:36:04,241 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-25 14:36:04,242 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-09-25 14:36:04,242 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:36:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:36:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:36:04,242 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-25 14:36:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-25 14:36:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 14:36:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 14:36:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 14:36:04,243 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 14:36:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 14:36:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 14:36:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 14:36:04,244 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 14:36:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 14:36:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 14:36:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 14:36:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 14:36:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 14:36:04,245 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 14:36:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 14:36:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 14:36:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 14:36:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 14:36:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 14:36:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 14:36:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 14:36:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 14:36:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 14:36:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 14:36:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 14:36:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 14:36:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 14:36:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 14:36:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 14:36:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 14:36:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 14:36:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 14:36:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 14:36:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 14:36:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 14:36:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 14:36:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 14:36:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 14:36:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 14:36:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 14:36:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 14:36:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 14:36:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 14:36:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 14:36:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 14:36:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 14:36:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 14:36:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 14:36:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 14:36:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 14:36:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 14:36:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 14:36:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 14:36:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 14:36:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 14:36:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 14:36:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 14:36:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 14:36:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 14:36:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 14:36:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 14:36:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 14:36:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 14:36:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:36:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 14:36:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 14:36:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 14:36:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 14:36:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 14:36:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 14:36:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 14:36:04,256 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 14:36:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 14:36:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 14:36:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 14:36:04,257 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 14:36:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 14:36:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 14:36:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 14:36:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 14:36:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 14:36:04,258 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 14:36:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 14:36:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 14:36:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 14:36:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 14:36:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 14:36:04,259 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 14:36:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 14:36:04,260 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 14:36:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 14:36:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 14:36:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 14:36:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 14:36:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 14:36:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 14:36:04,261 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 14:36:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 14:36:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 14:36:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 14:36:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 14:36:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 14:36:04,262 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 14:36:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-25 14:36:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-09-25 14:36:04,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 14:36:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 14:36:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 14:36:04,264 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:36:04,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 14:36:04,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 14:36:04,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 14:36:04,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:36:04,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:36:04,621 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-25 14:36:04,905 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:36:04,905 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 14:36:04,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:04 BoogieIcfgContainer [2020-09-25 14:36:04,911 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:36:04,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:36:04,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:36:04,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:36:04,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:36:03" (1/3) ... [2020-09-25 14:36:04,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a6cb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:04, skipping insertion in model container [2020-09-25 14:36:04,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:36:04" (2/3) ... [2020-09-25 14:36:04,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a6cb98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:36:04, skipping insertion in model container [2020-09-25 14:36:04,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:36:04" (3/3) ... [2020-09-25 14:36:04,921 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-09-25 14:36:04,933 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:36:04,945 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:36:04,967 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:36:04,999 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:36:04,999 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:36:05,000 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:36:05,000 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:36:05,000 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:36:05,000 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:36:05,000 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:36:05,000 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:36:05,023 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-09-25 14:36:05,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 14:36:05,033 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:05,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:05,036 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:05,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:05,044 INFO L82 PathProgramCache]: Analyzing trace with hash 136898680, now seen corresponding path program 1 times [2020-09-25 14:36:05,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:05,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008934962] [2020-09-25 14:36:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:05,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:05,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:05,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:36:05,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:05,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 14:36:05,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:05,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:36:05,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:05,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:36:05,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:05,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:05,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:05,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:05,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:36:05,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:05,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:05,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:05,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:36:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:05,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:05,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:36:05,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:05,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 14:36:05,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:05,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 14:36:05,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:05,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:36:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:05,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008934962] [2020-09-25 14:36:05,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:05,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:36:05,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450657992] [2020-09-25 14:36:05,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:36:05,595 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:05,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:36:05,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:36:05,616 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-09-25 14:36:05,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:05,991 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2020-09-25 14:36:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 14:36:05,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-09-25 14:36:05,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:06,010 INFO L225 Difference]: With dead ends: 230 [2020-09-25 14:36:06,011 INFO L226 Difference]: Without dead ends: 153 [2020-09-25 14:36:06,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:36:06,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-09-25 14:36:06,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 92. [2020-09-25 14:36:06,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 14:36:06,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-09-25 14:36:06,084 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 32 [2020-09-25 14:36:06,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:06,085 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-09-25 14:36:06,085 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:36:06,085 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-09-25 14:36:06,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 14:36:06,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:06,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:06,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:36:06,088 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:06,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:06,089 INFO L82 PathProgramCache]: Analyzing trace with hash 272796752, now seen corresponding path program 1 times [2020-09-25 14:36:06,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:06,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1708517488] [2020-09-25 14:36:06,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:06,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:06,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:06,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 14:36:06,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:06,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-25 14:36:06,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:06,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:36:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:36:06,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:36:06,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:36:06,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:06,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:06,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:06,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:06,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:06,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:36:06,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:06,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:06,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:06,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:06,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:06,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:06,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:36:06,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:06,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:06,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:06,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:36:06,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:06,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 14:36:06,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:06,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:06,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:36:06,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:36:06,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:36:06,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:06,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1708517488] [2020-09-25 14:36:06,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:36:06,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:36:06,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264656126] [2020-09-25 14:36:06,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:36:06,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:06,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:36:06,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:36:06,527 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 7 states. [2020-09-25 14:36:06,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:06,953 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-09-25 14:36:06,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:36:06,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-09-25 14:36:06,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:06,956 INFO L225 Difference]: With dead ends: 172 [2020-09-25 14:36:06,956 INFO L226 Difference]: Without dead ends: 112 [2020-09-25 14:36:06,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:36:06,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-25 14:36:06,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-09-25 14:36:06,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-25 14:36:06,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-09-25 14:36:06,971 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 32 [2020-09-25 14:36:06,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:06,971 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-09-25 14:36:06,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:36:06,972 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-09-25 14:36:06,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 14:36:06,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:06,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:06,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:36:06,974 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:06,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:06,975 INFO L82 PathProgramCache]: Analyzing trace with hash -54471897, now seen corresponding path program 1 times [2020-09-25 14:36:06,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:06,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131857083] [2020-09-25 14:36:06,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:07,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:07,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:07,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:07,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:08,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:08,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:12,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-25 14:36:12,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:36:12,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 14:36:12,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:12,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:12,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:36:12,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:36:12,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:36:12,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:12,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:12,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:12,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:12,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:12,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:12,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:12,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:12,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:12,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:12,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:12,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:36:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:12,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:36:12,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:12,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 14:36:12,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:12,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:12,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:36:12,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:36:12,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 14:36:12,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:12,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131857083] [2020-09-25 14:36:12,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:12,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:36:12,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11054842] [2020-09-25 14:36:12,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:36:12,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:12,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:36:12,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:36:12,363 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 9 states. [2020-09-25 14:36:12,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:12,729 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2020-09-25 14:36:12,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:36:12,729 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-25 14:36:12,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:12,731 INFO L225 Difference]: With dead ends: 193 [2020-09-25 14:36:12,732 INFO L226 Difference]: Without dead ends: 133 [2020-09-25 14:36:12,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:36:12,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-25 14:36:12,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2020-09-25 14:36:12,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 14:36:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2020-09-25 14:36:12,744 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 51 [2020-09-25 14:36:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:12,745 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2020-09-25 14:36:12,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:36:12,745 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2020-09-25 14:36:12,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-25 14:36:12,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:12,748 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:12,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:36:12,748 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:12,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:12,749 INFO L82 PathProgramCache]: Analyzing trace with hash -586426640, now seen corresponding path program 2 times [2020-09-25 14:36:12,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:12,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700910794] [2020-09-25 14:36:12,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:12,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:12,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:13,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:13,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:13,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:14,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:17,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:17,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 14:36:17,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:36:17,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 14:36:17,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:17,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:36:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 14:36:17,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:36:17,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:17,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:17,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:17,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:17,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:17,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:17,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:36:17,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:17,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:17,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:17,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:17,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:36:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:17,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:17,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:18,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 14:36:18,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:36:18,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-25 14:36:18,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:18,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:18,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:36:18,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 14:36:18,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 14:36:18,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:18,347 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:18,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700910794] [2020-09-25 14:36:18,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:18,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 14:36:18,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536341118] [2020-09-25 14:36:18,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 14:36:18,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:18,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 14:36:18,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:36:18,350 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand 6 states. [2020-09-25 14:36:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:18,718 INFO L93 Difference]: Finished difference Result 196 states and 216 transitions. [2020-09-25 14:36:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:36:18,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-09-25 14:36:18,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:18,723 INFO L225 Difference]: With dead ends: 196 [2020-09-25 14:36:18,723 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 14:36:18,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:36:18,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 14:36:18,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 114. [2020-09-25 14:36:18,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-25 14:36:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-09-25 14:36:18,756 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 70 [2020-09-25 14:36:18,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:18,756 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-09-25 14:36:18,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 14:36:18,759 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-09-25 14:36:18,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 14:36:18,786 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:18,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:18,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:36:18,787 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:18,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1356086606, now seen corresponding path program 1 times [2020-09-25 14:36:18,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:18,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731647394] [2020-09-25 14:36:18,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:18,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:18,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:23,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:23,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:23,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 14:36:23,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:36:23,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 14:36:23,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:23,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:36:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:36:23,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 14:36:23,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:23,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:23,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:23,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:23,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:23,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:23,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:36:23,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:23,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:23,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:23,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:23,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:23,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:36:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:23,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:24,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:24,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 14:36:24,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:24,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-09-25 14:36:24,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:24,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:36:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:36:24,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 14:36:24,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:24,459 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:24,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731647394] [2020-09-25 14:36:24,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:24,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 14:36:24,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883969874] [2020-09-25 14:36:24,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 14:36:24,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:24,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 14:36:24,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:36:24,463 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 11 states. [2020-09-25 14:36:24,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:24,878 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2020-09-25 14:36:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 14:36:24,879 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-25 14:36:24,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:24,881 INFO L225 Difference]: With dead ends: 214 [2020-09-25 14:36:24,881 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 14:36:24,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2020-09-25 14:36:24,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 14:36:24,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2020-09-25 14:36:24,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-09-25 14:36:24,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-09-25 14:36:24,892 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 71 [2020-09-25 14:36:24,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:24,892 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-09-25 14:36:24,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 14:36:24,892 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-09-25 14:36:24,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 14:36:24,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:24,894 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:24,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:36:24,895 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:24,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:24,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1395228995, now seen corresponding path program 2 times [2020-09-25 14:36:24,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:24,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504302177] [2020-09-25 14:36:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:26,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:27,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:29,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:29,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-09-25 14:36:29,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:36:29,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 14:36:29,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:29,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:36:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:36:29,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 14:36:29,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:29,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:30,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:30,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:30,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:30,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:30,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:36:30,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:30,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:30,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:36:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:30,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:30,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:30,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 14:36:30,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:30,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-09-25 14:36:30,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:30,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:36:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:36:30,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 14:36:30,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:30,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504302177] [2020-09-25 14:36:30,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:30,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:36:30,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570861549] [2020-09-25 14:36:30,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:36:30,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:30,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:36:30,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:36:30,953 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 13 states. [2020-09-25 14:36:31,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:31,392 INFO L93 Difference]: Finished difference Result 235 states and 255 transitions. [2020-09-25 14:36:31,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 14:36:31,392 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 91 [2020-09-25 14:36:31,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:31,394 INFO L225 Difference]: With dead ends: 235 [2020-09-25 14:36:31,394 INFO L226 Difference]: Without dead ends: 175 [2020-09-25 14:36:31,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-09-25 14:36:31,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-09-25 14:36:31,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 156. [2020-09-25 14:36:31,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-09-25 14:36:31,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2020-09-25 14:36:31,410 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 91 [2020-09-25 14:36:31,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:31,411 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2020-09-25 14:36:31,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:36:31,411 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2020-09-25 14:36:31,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-09-25 14:36:31,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:31,418 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:31,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:36:31,419 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:31,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:31,419 INFO L82 PathProgramCache]: Analyzing trace with hash 274581320, now seen corresponding path program 3 times [2020-09-25 14:36:31,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:31,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210657061] [2020-09-25 14:36:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:31,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:32,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:33,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:35,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:36,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:36,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-09-25 14:36:36,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 14:36:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:36:36,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:36,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:36:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 14:36:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 14:36:36,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:36,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:36,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:36,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:36,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:36,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:36,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:36:36,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:36,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:36,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:36,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:36:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:36,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:37,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:37,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 14:36:37,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:37,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 903 [2020-09-25 14:36:37,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:37,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:37,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:36:37,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:36:37,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-25 14:36:37,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:36:37,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210657061] [2020-09-25 14:36:37,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:37,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 14:36:37,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756251599] [2020-09-25 14:36:37,724 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 14:36:37,724 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:37,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 14:36:37,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-25 14:36:37,725 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand 15 states. [2020-09-25 14:36:38,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:38,204 INFO L93 Difference]: Finished difference Result 256 states and 277 transitions. [2020-09-25 14:36:38,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 14:36:38,205 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-09-25 14:36:38,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:38,207 INFO L225 Difference]: With dead ends: 256 [2020-09-25 14:36:38,207 INFO L226 Difference]: Without dead ends: 196 [2020-09-25 14:36:38,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-09-25 14:36:38,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-25 14:36:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 177. [2020-09-25 14:36:38,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-25 14:36:38,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 190 transitions. [2020-09-25 14:36:38,221 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 190 transitions. Word has length 111 [2020-09-25 14:36:38,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:38,223 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 190 transitions. [2020-09-25 14:36:38,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 14:36:38,223 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 190 transitions. [2020-09-25 14:36:38,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-09-25 14:36:38,225 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:38,225 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:38,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:36:38,225 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:38,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:38,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1182686291, now seen corresponding path program 4 times [2020-09-25 14:36:38,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:38,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215231522] [2020-09-25 14:36:38,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:38,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:38,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:40,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:40,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:40,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:40,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 14:36:40,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:36:40,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2622 [2020-09-25 14:36:40,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:40,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:40,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:36:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 14:36:40,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:36:40,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:41,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:41,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:41,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:41,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:41,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:36:41,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:41,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:41,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:41,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:41,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:41,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:36:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:41,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:42,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:42,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 14:36:42,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:42,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1528 [2020-09-25 14:36:42,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:42,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:42,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 14:36:42,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:42,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 14:36:42,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:43,012 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 118 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:36:43,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215231522] [2020-09-25 14:36:43,013 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:43,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 14:36:43,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591982990] [2020-09-25 14:36:43,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 14:36:43,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:43,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 14:36:43,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:36:43,015 INFO L87 Difference]: Start difference. First operand 177 states and 190 transitions. Second operand 17 states. [2020-09-25 14:36:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:36:43,977 INFO L93 Difference]: Finished difference Result 308 states and 334 transitions. [2020-09-25 14:36:43,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 14:36:43,977 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 131 [2020-09-25 14:36:43,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:36:43,979 INFO L225 Difference]: With dead ends: 308 [2020-09-25 14:36:43,979 INFO L226 Difference]: Without dead ends: 253 [2020-09-25 14:36:43,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2020-09-25 14:36:43,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-09-25 14:36:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 183. [2020-09-25 14:36:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-09-25 14:36:43,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 197 transitions. [2020-09-25 14:36:43,990 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 197 transitions. Word has length 131 [2020-09-25 14:36:43,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:36:43,991 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 197 transitions. [2020-09-25 14:36:43,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 14:36:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 197 transitions. [2020-09-25 14:36:43,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 14:36:43,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:36:43,996 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:36:43,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 14:36:43,996 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:36:43,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:36:43,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1200683152, now seen corresponding path program 1 times [2020-09-25 14:36:43,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:36:43,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270062885] [2020-09-25 14:36:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:36:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:44,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:46,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:46,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:46,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 14:36:46,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:36:46,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2561 [2020-09-25 14:36:46,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:46,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 14:36:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 14:36:46,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 14:36:46,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:46,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:36:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:46,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:46,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:46,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:36:46,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:46,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 14:36:46,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:46,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:36:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:46,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:36:46,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:36:46,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:36:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:36:46,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:36:48,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:36:48,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 14:36:48,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:36:48,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1724 [2020-09-25 14:36:48,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:36:48,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:36:48,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 14:36:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:36:48,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 14:36:48,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:36:48,851 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 118 proven. 19 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 14:36:48,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270062885] [2020-09-25 14:36:48,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:36:48,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 14:36:48,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275877909] [2020-09-25 14:36:48,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 14:36:48,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:36:48,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 14:36:48,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-09-25 14:36:48,855 INFO L87 Difference]: Start difference. First operand 183 states and 197 transitions. Second operand 18 states.