/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:38:45,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:38:45,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:38:45,815 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:38:45,816 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:38:45,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:38:45,826 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:38:45,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:38:45,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:38:45,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:38:45,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:38:45,837 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:38:45,837 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:38:45,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:38:45,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:38:45,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:38:45,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:38:45,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:38:45,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:38:45,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:38:45,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:38:45,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:38:45,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:38:45,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:38:45,873 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:38:45,873 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:38:45,874 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:38:45,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:38:45,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:38:45,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:38:45,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:38:45,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:38:45,886 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:38:45,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:38:45,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:38:45,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:38:45,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:38:45,891 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:38:45,891 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:38:45,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:38:45,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:38:45,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 23:38:45,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:38:45,938 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:38:45,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:38:45,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:38:45,941 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:38:45,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:38:45,942 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:38:45,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:38:45,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:38:45,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:38:45,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:38:45,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:38:45,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:38:45,945 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:38:45,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:38:45,945 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:38:45,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:38:45,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:38:45,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:38:45,947 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:38:45,947 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:38:45,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:38:45,949 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:38:45,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:38:45,951 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:38:45,951 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:38:45,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:38:45,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:38:45,952 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:38:45,952 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:38:46,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:38:46,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:38:46,386 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:38:46,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:38:46,388 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:38:46,389 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-09-24 23:38:46,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b49e91fe4/30b7b301fde246f9aba665555c0b2cd4/FLAGdc61b8eea [2020-09-24 23:38:47,074 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:38:47,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product38.cil.c [2020-09-24 23:38:47,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b49e91fe4/30b7b301fde246f9aba665555c0b2cd4/FLAGdc61b8eea [2020-09-24 23:38:47,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b49e91fe4/30b7b301fde246f9aba665555c0b2cd4 [2020-09-24 23:38:47,340 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:38:47,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:38:47,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:38:47,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:38:47,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:38:47,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:38:47" (1/1) ... [2020-09-24 23:38:47,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366b14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:38:47, skipping insertion in model container [2020-09-24 23:38:47,358 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:38:47" (1/1) ... [2020-09-24 23:38:47,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:38:47,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:38:47,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:38:47,932 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:38:48,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:38:48,065 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:38:48,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:38:48 WrapperNode [2020-09-24 23:38:48,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:38:48,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:38:48,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:38:48,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:38:48,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:38:48" (1/1) ... [2020-09-24 23:38:48,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:38:48" (1/1) ... [2020-09-24 23:38:48,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:38:48" (1/1) ... [2020-09-24 23:38:48,109 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:38:48" (1/1) ... [2020-09-24 23:38:48,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:38:48" (1/1) ... [2020-09-24 23:38:48,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:38:48" (1/1) ... [2020-09-24 23:38:48,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:38:48" (1/1) ... [2020-09-24 23:38:48,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:38:48,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:38:48,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:38:48,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:38:48,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:38:48" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:38:48,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:38:48,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:38:48,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-24 23:38:48,249 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-24 23:38:48,249 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-24 23:38:48,249 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-24 23:38:48,249 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-24 23:38:48,249 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:38:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-24 23:38:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-24 23:38:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-24 23:38:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-24 23:38:48,250 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-24 23:38:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-24 23:38:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-24 23:38:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-24 23:38:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-09-24 23:38:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-24 23:38:48,252 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-24 23:38:48,252 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-24 23:38:48,252 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 23:38:48,252 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-24 23:38:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-24 23:38:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-24 23:38:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-24 23:38:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-24 23:38:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-24 23:38:48,253 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-24 23:38:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-24 23:38:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-24 23:38:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-24 23:38:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-24 23:38:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-24 23:38:48,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-24 23:38:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-24 23:38:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-24 23:38:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-24 23:38:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-24 23:38:48,255 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-24 23:38:48,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:38:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:38:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-24 23:38:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-24 23:38:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-24 23:38:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-24 23:38:48,256 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-24 23:38:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-24 23:38:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-24 23:38:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-24 23:38:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-24 23:38:48,257 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-24 23:38:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-24 23:38:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-24 23:38:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-24 23:38:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:38:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-24 23:38:48,258 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-24 23:38:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-24 23:38:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-24 23:38:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-24 23:38:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:38:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-24 23:38:48,259 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-24 23:38:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-09-24 23:38:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-24 23:38:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-24 23:38:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-24 23:38:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-24 23:38:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-24 23:38:48,260 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-24 23:38:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-24 23:38:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-24 23:38:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-24 23:38:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 23:38:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 23:38:48,261 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-24 23:38:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 23:38:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 23:38:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:38:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 23:38:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-24 23:38:48,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:38:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-24 23:38:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-24 23:38:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:38:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-24 23:38:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-24 23:38:48,263 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-24 23:38:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-24 23:38:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:38:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 23:38:48,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:38:49,447 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:38:49,448 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-24 23:38:49,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:38:49 BoogieIcfgContainer [2020-09-24 23:38:49,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:38:49,462 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:38:49,462 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:38:49,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:38:49,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:38:47" (1/3) ... [2020-09-24 23:38:49,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a3ce76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:38:49, skipping insertion in model container [2020-09-24 23:38:49,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:38:48" (2/3) ... [2020-09-24 23:38:49,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43a3ce76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:38:49, skipping insertion in model container [2020-09-24 23:38:49,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:38:49" (3/3) ... [2020-09-24 23:38:49,470 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product38.cil.c [2020-09-24 23:38:49,483 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:38:49,494 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:38:49,517 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:38:49,547 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:38:49,547 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:38:49,548 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:38:49,548 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:38:49,548 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:38:49,548 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:38:49,548 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:38:49,548 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:38:49,579 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states. [2020-09-24 23:38:49,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-24 23:38:49,598 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:38:49,599 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:38:49,600 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:38:49,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:38:49,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1971275482, now seen corresponding path program 1 times [2020-09-24 23:38:49,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:38:49,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162316570] [2020-09-24 23:38:49,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:38:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:38:50,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:38:50,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:38:51,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:38:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:38:54,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:38:54,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-24 23:38:54,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:38:54,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-09-24 23:38:54,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:38:54,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 23:38:54,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 23:38:54,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 23:38:54,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 23:38:55,610 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:38:55,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:38:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:38:55,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:38:55,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:38:55,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:38:55,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:38:55,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-09-24 23:38:55,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:38:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:38:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:38:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 23:38:55,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:38:56,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:38:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:38:56,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:38:56,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:38:56,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:38:56,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:38:56,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:38:56,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:38:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:38:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:38:56,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:38:56,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:38:56,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:38:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:38:56,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:38:56,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:38:56,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:38:56,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:38:56,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 23:38:56,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:38:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:38:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:38:56,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:38:56,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:38:56,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:38:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:38:56,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:38:56,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:38:56,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:38:56,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:38:56,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:38:56,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:38:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:38:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:38:56,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:38:56,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:38:56,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:38:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:38:56,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:38:56,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:38:56,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:38:56,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:38:56,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:38:56,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:38:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:38:56,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:38:56,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:38:56,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:38:56,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-24 23:38:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:38:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:38:56,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:38:56,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:38:56,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:38:56,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 23:38:56,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:38:56,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:38:56,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:38:56,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:38:56,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:38:56,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-24 23:38:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:38:56,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:38:56,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:38:56,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:38:56,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:38:56,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:38:56,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:38:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:38:56,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:38:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:38:56,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:38:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:38:56,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162316570] [2020-09-24 23:38:56,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:38:56,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:38:56,269 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852252732] [2020-09-24 23:38:56,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:38:56,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:38:56,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:38:56,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:38:56,318 INFO L87 Difference]: Start difference. First operand 310 states. Second operand 8 states. [2020-09-24 23:38:57,100 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:38:58,130 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:38:58,459 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:38:58,877 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:38:59,261 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:38:59,631 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:39:00,029 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:39:00,335 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:39:02,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:39:02,403 INFO L93 Difference]: Finished difference Result 643 states and 790 transitions. [2020-09-24 23:39:02,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:39:02,408 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 142 [2020-09-24 23:39:02,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:39:02,430 INFO L225 Difference]: With dead ends: 643 [2020-09-24 23:39:02,430 INFO L226 Difference]: Without dead ends: 444 [2020-09-24 23:39:02,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:39:02,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2020-09-24 23:39:02,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 400. [2020-09-24 23:39:02,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 400 states. [2020-09-24 23:39:02,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 450 transitions. [2020-09-24 23:39:02,596 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 450 transitions. Word has length 142 [2020-09-24 23:39:02,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:39:02,597 INFO L479 AbstractCegarLoop]: Abstraction has 400 states and 450 transitions. [2020-09-24 23:39:02,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 23:39:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 450 transitions. [2020-09-24 23:39:02,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-24 23:39:02,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:39:02,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:39:02,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:39:02,606 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:39:02,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:39:02,606 INFO L82 PathProgramCache]: Analyzing trace with hash -619705205, now seen corresponding path program 1 times [2020-09-24 23:39:02,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:39:02,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069527102] [2020-09-24 23:39:02,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:39:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:02,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:02,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:03,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:07,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:07,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-24 23:39:07,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:39:07,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-24 23:39:07,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:07,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 23:39:07,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-24 23:39:07,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 23:39:07,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:08,032 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:39:08,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:39:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:08,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:08,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:08,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:39:08,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:08,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-09-24 23:39:08,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:08,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:08,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 23:39:08,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:08,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:39:08,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:08,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:08,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:08,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:08,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:08,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:39:08,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:08,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:08,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:08,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:39:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:08,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:08,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:08,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:08,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:08,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:39:08,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:08,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:08,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:08,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:39:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:08,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:08,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:08,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:08,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:08,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:39:08,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:08,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:08,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:08,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:39:08,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:08,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:39:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:08,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:08,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:08,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:08,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:08,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:39:08,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:08,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:08,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:08,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:08,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:08,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-09-24 23:39:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:08,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:08,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:08,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:39:08,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:08,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:39:08,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:08,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:08,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 23:39:08,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:08,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:08,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-24 23:39:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:08,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:08,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:08,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:08,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:08,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:39:08,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:39:08,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:08,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:08,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-24 23:39:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:08,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:08,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:08,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:08,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:39:08,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:39:08,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:08,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:39:08,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069527102] [2020-09-24 23:39:08,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:39:08,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:39:08,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414298638] [2020-09-24 23:39:08,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:39:08,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:39:08,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:39:08,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:39:08,505 INFO L87 Difference]: Start difference. First operand 400 states and 450 transitions. Second operand 5 states. [2020-09-24 23:39:09,187 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 23:39:11,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:39:11,690 INFO L93 Difference]: Finished difference Result 881 states and 1100 transitions. [2020-09-24 23:39:11,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:39:11,691 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-09-24 23:39:11,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:39:11,711 INFO L225 Difference]: With dead ends: 881 [2020-09-24 23:39:11,711 INFO L226 Difference]: Without dead ends: 591 [2020-09-24 23:39:11,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:39:11,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2020-09-24 23:39:11,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 536. [2020-09-24 23:39:11,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-24 23:39:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 629 transitions. [2020-09-24 23:39:11,944 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 629 transitions. Word has length 148 [2020-09-24 23:39:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:39:11,945 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 629 transitions. [2020-09-24 23:39:11,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:39:11,945 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 629 transitions. [2020-09-24 23:39:11,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-24 23:39:11,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:39:11,949 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:39:11,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:39:11,949 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:39:11,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:39:11,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1901166416, now seen corresponding path program 1 times [2020-09-24 23:39:11,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:39:11,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1521563656] [2020-09-24 23:39:11,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:39:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:12,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:12,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:13,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:14,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:17,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:17,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-24 23:39:17,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:39:17,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-24 23:39:17,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:17,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 23:39:17,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 23:39:17,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-24 23:39:17,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:17,459 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:39:17,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:39:17,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:17,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:17,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:17,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:39:17,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:17,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-09-24 23:39:17,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:17,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:17,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:17,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 23:39:17,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:17,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:39:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:17,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:17,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:17,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:17,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:17,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:39:17,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:17,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:17,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:17,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:17,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:39:17,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:17,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:17,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:17,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:17,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:17,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:39:17,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:17,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:17,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:17,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:17,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:39:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:17,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:17,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:17,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:17,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:17,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:39:17,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:17,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:17,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:39:17,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:17,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:39:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:17,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:17,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:17,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:17,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:39:17,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 23:39:17,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:17,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 23:39:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:17,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:17,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:17,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:39:17,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:17,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:39:17,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:39:17,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:39:17,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:39:17,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:18,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-24 23:39:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:18,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:18,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:18,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:39:18,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:18,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:39:18,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:18,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:39:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:39:18,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 23:39:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:18,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:18,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:18,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:18,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:18,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 23:39:18,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:18,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:39:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:18,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:39:18,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:39:18,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-24 23:39:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:18,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:18,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:18,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:18,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:18,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:39:18,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:18,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:18,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:39:18,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:18,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 23:39:18,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:39:18,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1521563656] [2020-09-24 23:39:18,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:39:18,330 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-24 23:39:18,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965668222] [2020-09-24 23:39:18,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 23:39:18,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:39:18,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 23:39:18,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:39:18,337 INFO L87 Difference]: Start difference. First operand 536 states and 629 transitions. Second operand 12 states. [2020-09-24 23:39:19,080 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-24 23:39:20,136 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-09-24 23:39:20,677 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 193 [2020-09-24 23:39:20,997 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:39:21,397 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 23:39:21,730 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 23:39:22,869 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 23:39:23,193 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-24 23:39:23,616 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-24 23:39:26,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:39:26,185 INFO L93 Difference]: Finished difference Result 1277 states and 1806 transitions. [2020-09-24 23:39:26,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 23:39:26,186 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 161 [2020-09-24 23:39:26,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:39:26,195 INFO L225 Difference]: With dead ends: 1277 [2020-09-24 23:39:26,195 INFO L226 Difference]: Without dead ends: 1018 [2020-09-24 23:39:26,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-09-24 23:39:26,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-09-24 23:39:26,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 713. [2020-09-24 23:39:26,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2020-09-24 23:39:26,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 885 transitions. [2020-09-24 23:39:26,343 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 885 transitions. Word has length 161 [2020-09-24 23:39:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:39:26,346 INFO L479 AbstractCegarLoop]: Abstraction has 713 states and 885 transitions. [2020-09-24 23:39:26,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 23:39:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 885 transitions. [2020-09-24 23:39:26,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-09-24 23:39:26,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:39:26,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:39:26,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:39:26,354 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:39:26,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:39:26,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2121548527, now seen corresponding path program 1 times [2020-09-24 23:39:26,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:39:26,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500100615] [2020-09-24 23:39:26,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:39:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:26,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:27,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:27,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:31,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:31,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-09-24 23:39:31,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:39:31,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 23:39:31,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:31,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:31,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-24 23:39:31,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-09-24 23:39:31,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:31,693 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-24 23:39:31,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:39:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:31,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:31,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:31,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 23:39:31,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:31,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 23:39:31,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:31,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:31,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:31,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:31,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:31,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 23:39:31,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:31,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:31,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:31,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:31,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:31,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:39:31,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:31,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:31,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:31,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:31,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:31,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-24 23:39:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:31,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:31,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:31,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:31,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:31,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:39:31,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:31,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:31,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:31,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:31,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:39:31,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-24 23:39:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:31,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:31,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:31,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:31,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:31,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 23:39:31,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:31,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:31,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-24 23:39:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:31,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:31,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:31,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:39:31,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:31,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:39:31,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:31,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:31,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:31,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:31,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:31,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-24 23:39:31,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:31,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:31,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:39:31,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:31,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:39:31,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:31,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:31,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 23:39:31,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:31,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-24 23:39:31,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:31,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:32,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:32,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:32,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 23:39:32,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:39:32,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-24 23:39:32,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:39:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:32,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 23:39:32,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:32,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:39:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:32,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:32,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:32,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:32,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-24 23:39:32,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:39:32,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-24 23:39:32,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:32,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:32,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:32,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:32,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:39:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:32,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:32,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:32,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-24 23:39:32,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:39:32,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-24 23:39:32,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:32,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:32,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:32,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:39:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:32,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:32,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:32,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 23:39:32,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:32,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:39:32,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:32,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:32,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:32,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:32,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:39:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:32,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:32,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:32,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:39:32,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:39:32,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:32,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:32,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:32,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 23:39:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:32,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:32,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:32,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-24 23:39:32,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:39:32,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:32,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-24 23:39:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:32,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:32,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:32,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 23:39:32,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:32,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:39:32,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:32,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:32,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 23:39:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:32,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:32,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:32,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:32,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:32,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:39:32,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:39:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:32,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:32,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-09-24 23:39:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:32,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:32,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:32,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 23:39:32,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:32,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:39:32,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:32,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 23:39:32,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:32,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:32,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-24 23:39:32,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:32,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:32,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:32,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:32,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:32,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:39:32,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:32,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:32,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:39:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:32,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:32,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-24 23:39:32,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:39:32,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:39:32,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:39:32,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:39:32,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:39:32,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 23:39:32,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:39:32,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:39:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:39:32,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:39:32,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:39:32,557 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 23:39:32,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500100615] [2020-09-24 23:39:32,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:39:32,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-24 23:39:32,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618464859] [2020-09-24 23:39:32,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 23:39:32,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:39:32,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 23:39:32,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:39:32,560 INFO L87 Difference]: Start difference. First operand 713 states and 885 transitions. Second operand 8 states. [2020-09-24 23:39:33,183 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187