/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 01:42:30,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 01:42:30,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 01:42:30,916 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 01:42:30,916 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 01:42:30,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 01:42:30,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 01:42:30,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 01:42:30,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 01:42:30,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 01:42:30,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 01:42:30,925 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 01:42:30,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 01:42:30,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 01:42:30,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 01:42:30,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 01:42:30,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 01:42:30,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 01:42:30,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 01:42:30,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 01:42:30,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 01:42:30,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 01:42:30,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 01:42:30,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 01:42:30,940 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 01:42:30,940 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 01:42:30,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 01:42:30,941 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 01:42:30,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 01:42:30,943 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 01:42:30,943 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 01:42:30,944 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 01:42:30,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 01:42:30,945 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 01:42:30,946 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 01:42:30,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 01:42:30,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 01:42:30,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 01:42:30,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 01:42:30,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 01:42:30,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 01:42:30,949 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 01:42:30,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 01:42:30,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 01:42:30,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 01:42:30,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 01:42:30,973 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 01:42:30,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 01:42:30,974 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 01:42:30,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 01:42:30,974 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 01:42:30,974 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 01:42:30,975 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 01:42:30,975 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 01:42:30,975 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 01:42:30,975 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 01:42:30,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 01:42:30,976 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 01:42:30,976 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 01:42:30,976 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 01:42:30,976 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 01:42:30,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 01:42:30,977 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 01:42:30,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 01:42:30,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 01:42:30,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 01:42:30,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 01:42:30,978 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 01:42:30,978 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 01:42:30,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 01:42:30,978 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 01:42:30,978 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 01:42:31,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 01:42:31,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 01:42:31,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 01:42:31,302 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 01:42:31,302 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 01:42:31,303 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product11.cil.c [2020-10-15 01:42:31,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f207b4e0/6d04e08e5e5b4acfb773774a6af99621/FLAG1669383c9 [2020-10-15 01:42:31,781 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 01:42:31,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product11.cil.c [2020-10-15 01:42:31,806 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f207b4e0/6d04e08e5e5b4acfb773774a6af99621/FLAG1669383c9 [2020-10-15 01:42:32,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7f207b4e0/6d04e08e5e5b4acfb773774a6af99621 [2020-10-15 01:42:32,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 01:42:32,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 01:42:32,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 01:42:32,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 01:42:32,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 01:42:32,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:42:32" (1/1) ... [2020-10-15 01:42:32,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e52fa5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:32, skipping insertion in model container [2020-10-15 01:42:32,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:42:32" (1/1) ... [2020-10-15 01:42:32,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 01:42:32,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 01:42:32,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 01:42:32,552 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 01:42:32,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 01:42:32,762 INFO L208 MainTranslator]: Completed translation [2020-10-15 01:42:32,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:32 WrapperNode [2020-10-15 01:42:32,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 01:42:32,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 01:42:32,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 01:42:32,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 01:42:32,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:32" (1/1) ... [2020-10-15 01:42:32,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:32" (1/1) ... [2020-10-15 01:42:32,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:32" (1/1) ... [2020-10-15 01:42:32,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:32" (1/1) ... [2020-10-15 01:42:32,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:32" (1/1) ... [2020-10-15 01:42:32,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:32" (1/1) ... [2020-10-15 01:42:32,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:32" (1/1) ... [2020-10-15 01:42:32,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 01:42:32,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 01:42:32,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 01:42:32,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 01:42:32,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 01:42:32,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 01:42:32,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 01:42:32,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-15 01:42:32,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-15 01:42:32,914 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-15 01:42:32,914 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-15 01:42:32,914 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-15 01:42:32,914 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-15 01:42:32,915 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 01:42:32,915 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-15 01:42:32,915 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-15 01:42:32,915 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-15 01:42:32,915 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-15 01:42:32,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-15 01:42:32,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-15 01:42:32,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-15 01:42:32,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-15 01:42:32,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-15 01:42:32,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-15 01:42:32,916 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-15 01:42:32,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-15 01:42:32,917 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-10-15 01:42:32,917 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-15 01:42:32,917 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-15 01:42:32,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-15 01:42:32,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-15 01:42:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-15 01:42:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-15 01:42:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-15 01:42:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-15 01:42:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-15 01:42:32,918 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-15 01:42:32,919 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-15 01:42:32,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-15 01:42:32,919 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-15 01:42:32,919 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-15 01:42:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 01:42:32,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 01:42:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-15 01:42:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-15 01:42:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-15 01:42:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-15 01:42:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-15 01:42:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-15 01:42:32,920 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-15 01:42:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-15 01:42:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-15 01:42:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-15 01:42:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-15 01:42:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-15 01:42:32,921 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-15 01:42:32,922 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-15 01:42:32,922 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-15 01:42:32,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-15 01:42:32,922 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-15 01:42:32,922 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-15 01:42:32,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 01:42:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-15 01:42:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-15 01:42:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 01:42:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-15 01:42:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-15 01:42:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 01:42:32,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 01:42:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 01:42:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 01:42:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-15 01:42:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 01:42:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-15 01:42:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-15 01:42:32,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 01:42:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-15 01:42:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-15 01:42:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 01:42:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-15 01:42:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-15 01:42:32,925 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-15 01:42:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-15 01:42:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-15 01:42:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-15 01:42:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-15 01:42:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-10-15 01:42:32,926 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-15 01:42:32,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 01:42:32,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-15 01:42:32,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 01:42:33,915 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 01:42:33,916 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-15 01:42:33,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:42:33 BoogieIcfgContainer [2020-10-15 01:42:33,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 01:42:33,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 01:42:33,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 01:42:33,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 01:42:33,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:42:32" (1/3) ... [2020-10-15 01:42:33,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b39d35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:42:33, skipping insertion in model container [2020-10-15 01:42:33,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:42:32" (2/3) ... [2020-10-15 01:42:33,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b39d35b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:42:33, skipping insertion in model container [2020-10-15 01:42:33,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:42:33" (3/3) ... [2020-10-15 01:42:33,930 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product11.cil.c [2020-10-15 01:42:33,940 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 01:42:33,948 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 01:42:33,963 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 01:42:33,988 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 01:42:33,989 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 01:42:33,989 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 01:42:33,989 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 01:42:33,990 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 01:42:33,990 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 01:42:33,990 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 01:42:33,990 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 01:42:34,012 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-10-15 01:42:34,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 01:42:34,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:42:34,023 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] [2020-10-15 01:42:34,024 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:42:34,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:42:34,030 INFO L82 PathProgramCache]: Analyzing trace with hash 789577792, now seen corresponding path program 1 times [2020-10-15 01:42:34,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:42:34,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [780318131] [2020-10-15 01:42:34,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:42:34,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:34,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:34,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:35,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:36,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:36,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 01:42:36,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 01:42:36,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2201 [2020-10-15 01:42:36,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:36,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:36,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 01:42:36,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 01:42:36,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 23 [2020-10-15 01:42:37,067 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 01:42:37,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:42:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:37,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:37,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:37,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:37,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:37,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-15 01:42:37,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:37,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 01:42:37,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:37,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 01:42:37,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:37,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:37,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:37,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:37,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:37,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:42:37,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:37,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:37,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:37,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:37,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:37,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 01:42:37,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:37,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:37,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:37,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:37,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:37,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:42:37,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:37,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:37,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:37,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:37,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:37,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:37,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 01:42:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:37,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:37,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:37,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:37,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:37,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:42:37,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:37,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:37,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:37,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:37,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:37,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 01:42:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:37,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:37,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:37,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:37,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:37,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:42:37,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:37,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:37,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:37,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 01:42:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:37,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:37,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:37,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:37,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:37,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:42:37,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:37,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:37,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:37,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:37,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:37,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:37,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 01:42:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:37,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:37,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:37,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:37,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:37,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 01:42:37,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:37,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:37,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 01:42:37,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:37,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:37,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:37,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 01:42:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:37,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:37,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:37,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:37,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:37,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:37,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:37,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:37,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:37,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:37,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:37,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:37,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:42:37,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [780318131] [2020-10-15 01:42:37,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:42:37,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 01:42:37,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19862238] [2020-10-15 01:42:37,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 01:42:37,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:42:37,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 01:42:37,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 01:42:37,298 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 7 states. [2020-10-15 01:42:37,928 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:42:39,149 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:42:39,465 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 01:42:39,731 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 01:42:39,998 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:42:40,329 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:42:40,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:42:40,982 INFO L93 Difference]: Finished difference Result 306 states and 415 transitions. [2020-10-15 01:42:40,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 01:42:40,985 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-15 01:42:40,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:42:41,000 INFO L225 Difference]: With dead ends: 306 [2020-10-15 01:42:41,000 INFO L226 Difference]: Without dead ends: 190 [2020-10-15 01:42:41,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-15 01:42:41,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-15 01:42:41,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 164. [2020-10-15 01:42:41,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-15 01:42:41,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 201 transitions. [2020-10-15 01:42:41,103 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 201 transitions. Word has length 52 [2020-10-15 01:42:41,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:42:41,104 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 201 transitions. [2020-10-15 01:42:41,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 01:42:41,104 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 201 transitions. [2020-10-15 01:42:41,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 01:42:41,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:42:41,110 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] [2020-10-15 01:42:41,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 01:42:41,110 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:42:41,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:42:41,111 INFO L82 PathProgramCache]: Analyzing trace with hash 177959720, now seen corresponding path program 1 times [2020-10-15 01:42:41,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:42:41,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113120059] [2020-10-15 01:42:41,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:42:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:41,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:41,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:41,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:42,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:44,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:44,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 01:42:44,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 01:42:44,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3442 [2020-10-15 01:42:44,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:44,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:44,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 01:42:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:44,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 01:42:44,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:44,829 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 01:42:44,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:42:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:44,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:44,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:44,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:44,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:44,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-15 01:42:44,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:44,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:44,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:44,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:44,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 01:42:44,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:44,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 01:42:44,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:44,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:44,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:44,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:44,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:44,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:44,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:44,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:44,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:44,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:44,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:44,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 01:42:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:44,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:44,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:44,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:44,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:44,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:44,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:44,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:44,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:44,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:44,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:44,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:44,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 01:42:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:44,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:44,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:44,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:44,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:44,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:42:44,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:44,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:44,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:44,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:44,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:44,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:44,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 01:42:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:44,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:44,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:44,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:44,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:44,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:44,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:44,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:44,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:44,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:44,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:44,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:44,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 01:42:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:44,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:44,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:44,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:44,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:44,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 01:42:44,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:44,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 01:42:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 01:42:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 01:42:44,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:45,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-15 01:42:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:45,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:45,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:45,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:45,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:45,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:42:45,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:45,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:45,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:45,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:45,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:45,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:45,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-15 01:42:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:45,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:45,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:45,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:45,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:45,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:42:45,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:45,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:45,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 01:42:45,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:45,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:45,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-15 01:42:45,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-15 01:42:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:45,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:45,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:45,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:45,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:45,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:45,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:45,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:45,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:45,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:45,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:42:45,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113120059] [2020-10-15 01:42:45,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:42:45,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 01:42:45,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572070468] [2020-10-15 01:42:45,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 01:42:45,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:42:45,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 01:42:45,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 01:42:45,062 INFO L87 Difference]: Start difference. First operand 164 states and 201 transitions. Second operand 10 states. [2020-10-15 01:42:45,577 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:42:46,409 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-15 01:42:47,091 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 190 [2020-10-15 01:42:47,410 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:42:47,821 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 01:42:48,092 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 01:42:48,386 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-15 01:42:48,742 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 01:42:49,034 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 01:42:49,324 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:42:49,935 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 192 [2020-10-15 01:42:50,169 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:42:50,730 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-10-15 01:42:51,265 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 193 [2020-10-15 01:42:51,724 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 187 [2020-10-15 01:42:52,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:42:52,916 INFO L93 Difference]: Finished difference Result 405 states and 553 transitions. [2020-10-15 01:42:52,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-15 01:42:52,917 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-15 01:42:52,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:42:52,922 INFO L225 Difference]: With dead ends: 405 [2020-10-15 01:42:52,922 INFO L226 Difference]: Without dead ends: 324 [2020-10-15 01:42:52,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2020-10-15 01:42:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-15 01:42:53,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 271. [2020-10-15 01:42:53,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-15 01:42:53,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 342 transitions. [2020-10-15 01:42:53,006 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 342 transitions. Word has length 57 [2020-10-15 01:42:53,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:42:53,006 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 342 transitions. [2020-10-15 01:42:53,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 01:42:53,007 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 342 transitions. [2020-10-15 01:42:53,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-15 01:42:53,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:42:53,011 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] [2020-10-15 01:42:53,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 01:42:53,012 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:42:53,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:42:53,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2038647426, now seen corresponding path program 1 times [2020-10-15 01:42:53,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:42:53,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [976089462] [2020-10-15 01:42:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:42:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:53,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:53,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:53,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-15 01:42:53,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:53,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-15 01:42:53,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:53,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 01:42:53,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:53,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-15 01:42:53,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:53,701 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 01:42:53,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:42:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:53,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:53,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:53,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:53,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:53,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-15 01:42:53,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:53,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:53,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:53,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:53,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 01:42:53,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 01:42:53,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 01:42:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:53,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:53,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:53,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:53,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:53,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:42:53,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:53,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:53,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:53,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:53,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:53,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:53,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 01:42:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:53,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:53,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:53,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:53,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:53,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:42:53,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:53,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:53,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:53,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:53,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 01:42:53,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 01:42:53,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:53,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:53,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:53,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:53,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:53,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:42:53,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:53,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:53,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:53,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:53,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:53,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 01:42:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:53,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:53,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:53,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:42:53,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:53,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 01:42:53,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:53,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:53,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:42:53,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:53,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 01:42:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:53,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:53,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:53,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:53,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:53,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:42:53,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:53,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:53,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:42:53,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:42:53,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:42:53,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:53,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-15 01:42:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:53,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:53,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:53,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:53,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:53,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:53,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:53,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:53,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:53,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:53,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:53,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-15 01:42:53,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:53,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:53,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:53,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:53,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:53,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:42:53,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:53,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:53,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:53,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:53,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:53,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-15 01:42:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:53,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:53,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:42:53,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:42:53,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:42:53,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:42:53,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:42:53,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:42:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:42:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:42:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:42:53,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:42:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:42:53,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [976089462] [2020-10-15 01:42:53,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:42:53,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 01:42:53,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035408213] [2020-10-15 01:42:53,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 01:42:53,928 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:42:53,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 01:42:53,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:42:53,928 INFO L87 Difference]: Start difference. First operand 271 states and 342 transitions. Second operand 5 states. [2020-10-15 01:42:54,273 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:42:55,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:42:55,554 INFO L93 Difference]: Finished difference Result 779 states and 1039 transitions. [2020-10-15 01:42:55,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 01:42:55,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 61 [2020-10-15 01:42:55,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:42:55,561 INFO L225 Difference]: With dead ends: 779 [2020-10-15 01:42:55,561 INFO L226 Difference]: Without dead ends: 532 [2020-10-15 01:42:55,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 01:42:55,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-10-15 01:42:55,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 488. [2020-10-15 01:42:55,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2020-10-15 01:42:55,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 622 transitions. [2020-10-15 01:42:55,658 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 622 transitions. Word has length 61 [2020-10-15 01:42:55,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:42:55,659 INFO L479 AbstractCegarLoop]: Abstraction has 488 states and 622 transitions. [2020-10-15 01:42:55,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 01:42:55,659 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 622 transitions. [2020-10-15 01:42:55,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-15 01:42:55,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:42:55,663 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] [2020-10-15 01:42:55,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 01:42:55,664 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:42:55,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:42:55,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1161355680, now seen corresponding path program 1 times [2020-10-15 01:42:55,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:42:55,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955239508] [2020-10-15 01:42:55,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:42:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:42:55,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:55,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:42:58,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:00,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:00,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-15 01:43:00,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 01:43:00,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-15 01:43:00,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:00,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 01:43:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:00,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-15 01:43:00,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:01,031 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 01:43:01,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:43:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:01,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:01,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:01,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:01,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:01,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-15 01:43:01,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:01,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:01,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:01,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:01,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 01:43:01,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:01,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 01:43:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:01,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:01,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:01,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:01,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:01,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:01,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:01,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:01,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:01,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:01,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 01:43:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:01,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:01,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:01,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:01,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:01,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:01,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:01,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:01,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:01,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 01:43:01,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:01,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:01,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:01,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:01,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:01,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:01,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:01,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:01,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:01,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:01,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:01,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:01,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 01:43:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:01,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:01,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:01,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:01,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:01,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:01,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:01,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:01,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:01,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:01,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 01:43:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:01,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:01,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:01,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:01,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:01,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:43:01,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:01,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:01,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:01,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 01:43:01,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 01:43:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:01,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:01,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:01,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:01,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:01,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:01,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:01,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:43:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:01,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:43:01,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:01,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-15 01:43:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:01,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:01,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:01,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:01,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:01,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:01,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:01,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:01,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:43:01,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-15 01:43:01,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:43:01,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:01,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 01:43:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:01,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:01,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:01,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:01,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:01,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:01,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:01,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:01,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:43:01,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:01,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:43:01,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:01,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 01:43:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:01,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:01,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:01,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:01,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:01,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:01,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:01,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:43:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:01,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:43:01,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:01,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-15 01:43:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:01,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:01,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:01,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:01,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:01,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:01,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:01,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:43:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:01,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:43:01,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:01,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 01:43:01,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955239508] [2020-10-15 01:43:01,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:43:01,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 01:43:01,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952186868] [2020-10-15 01:43:01,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 01:43:01,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:43:01,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 01:43:01,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:43:01,255 INFO L87 Difference]: Start difference. First operand 488 states and 622 transitions. Second operand 5 states. [2020-10-15 01:43:01,575 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:43:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:43:02,159 INFO L93 Difference]: Finished difference Result 679 states and 881 transitions. [2020-10-15 01:43:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 01:43:02,160 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-15 01:43:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:43:02,162 INFO L225 Difference]: With dead ends: 679 [2020-10-15 01:43:02,163 INFO L226 Difference]: Without dead ends: 244 [2020-10-15 01:43:02,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-15 01:43:02,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-15 01:43:02,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 231. [2020-10-15 01:43:02,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-15 01:43:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 270 transitions. [2020-10-15 01:43:02,215 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 270 transitions. Word has length 68 [2020-10-15 01:43:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:43:02,215 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 270 transitions. [2020-10-15 01:43:02,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 01:43:02,216 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 270 transitions. [2020-10-15 01:43:02,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-15 01:43:02,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:43:02,218 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] [2020-10-15 01:43:02,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 01:43:02,219 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:43:02,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:43:02,219 INFO L82 PathProgramCache]: Analyzing trace with hash -68424058, now seen corresponding path program 1 times [2020-10-15 01:43:02,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:43:02,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881622899] [2020-10-15 01:43:02,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:43:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 01:43:02,263 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 01:43:02,263 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 01:43:02,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 01:43:02,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:43:02 BoogieIcfgContainer [2020-10-15 01:43:02,296 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 01:43:02,298 INFO L168 Benchmark]: Toolchain (without parser) took 30164.68 ms. Allocated memory was 147.3 MB in the beginning and 622.9 MB in the end (delta: 475.5 MB). Free memory was 102.7 MB in the beginning and 335.7 MB in the end (delta: -233.0 MB). Peak memory consumption was 242.5 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:02,299 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-15 01:43:02,300 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.08 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.3 MB in the beginning and 174.7 MB in the end (delta: -72.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:02,301 INFO L168 Benchmark]: Boogie Preprocessor took 91.65 ms. Allocated memory is still 204.5 MB. Free memory was 174.7 MB in the beginning and 170.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:02,302 INFO L168 Benchmark]: RCFGBuilder took 1066.11 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 170.8 MB in the beginning and 195.8 MB in the end (delta: -24.9 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:02,302 INFO L168 Benchmark]: TraceAbstraction took 28372.99 ms. Allocated memory was 233.3 MB in the beginning and 622.9 MB in the end (delta: 389.5 MB). Free memory was 195.8 MB in the beginning and 335.7 MB in the end (delta: -139.9 MB). Peak memory consumption was 249.6 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:02,306 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 628.08 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 102.3 MB in the beginning and 174.7 MB in the end (delta: -72.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.65 ms. Allocated memory is still 204.5 MB. Free memory was 174.7 MB in the beginning and 170.8 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1066.11 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 170.8 MB in the beginning and 195.8 MB in the end (delta: -24.9 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28372.99 ms. Allocated memory was 233.3 MB in the beginning and 622.9 MB in the end (delta: 389.5 MB). Free memory was 195.8 MB in the beginning and 335.7 MB in the end (delta: -139.9 MB). Peak memory consumption was 249.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 799]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L78] int cleanupTimeShifts = 4; [L386] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L588] int pumpRunning = 0; [L589] int systemActive = 1; [L804] int waterLevel = 1; [L805] int methaneLevelCritical = 0; [L159] int retValue_acc ; [L160] int tmp ; [L164] FCALL select_helpers() [L165] FCALL select_features() [L166] CALL, EXPR valid_product() [L208] int retValue_acc ; [L211] retValue_acc = 1 [L212] return (retValue_acc); [L166] RET, EXPR valid_product() [L166] tmp = valid_product() [L168] COND TRUE \read(tmp) [L170] FCALL setup() [L171] CALL runTest() [L150] CALL test() [L729] int splverifierCounter ; [L730] int tmp ; [L731] int tmp___0 ; [L732] int tmp___1 ; [L733] int tmp___2 ; [L736] splverifierCounter = 0 [L738] COND TRUE 1 [L740] COND TRUE splverifierCounter < 4 [L746] tmp = __VERIFIER_nondet_int() [L748] COND TRUE \read(tmp) [L750] CALL waterRise() [L822] COND TRUE waterLevel < 2 [L823] waterLevel = waterLevel + 1 [L750] RET waterRise() [L756] tmp___0 = __VERIFIER_nondet_int() [L758] COND FALSE !(\read(tmp___0)) [L766] tmp___2 = __VERIFIER_nondet_int() [L768] COND TRUE \read(tmp___2) [L783] CALL timeShift() [L595] COND FALSE !(\read(pumpRunning)) [L602] COND TRUE \read(systemActive) [L604] FCALL processEnvironment() [L610] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L843] int retValue_acc ; [L846] retValue_acc = methaneLevelCritical [L847] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L875] int retValue_acc ; [L878] retValue_acc = waterLevel [L879] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L668] int retValue_acc ; [L671] retValue_acc = pumpRunning [L672] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L799] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 210 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 409 SDtfs, 847 SDslu, 557 SDs, 0 SdLazy, 2127 SolverSat, 535 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=488occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 136 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 13.2s InterpolantComputationTime, 302 NumberOfCodeBlocks, 302 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 71184 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...