/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_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 01:43:08,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 01:43:08,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 01:43:08,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 01:43:08,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 01:43:08,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 01:43:08,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 01:43:08,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 01:43:08,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 01:43:08,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 01:43:08,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 01:43:08,803 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 01:43:08,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 01:43:08,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 01:43:08,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 01:43:08,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 01:43:08,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 01:43:08,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 01:43:08,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 01:43:08,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 01:43:08,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 01:43:08,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 01:43:08,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 01:43:08,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 01:43:08,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 01:43:08,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 01:43:08,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 01:43:08,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 01:43:08,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 01:43:08,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 01:43:08,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 01:43:08,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 01:43:08,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 01:43:08,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 01:43:08,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 01:43:08,841 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 01:43:08,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 01:43:08,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 01:43:08,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 01:43:08,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 01:43:08,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 01:43:08,845 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 01:43:08,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 01:43:08,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 01:43:08,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 01:43:08,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 01:43:08,887 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 01:43:08,887 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 01:43:08,888 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 01:43:08,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 01:43:08,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 01:43:08,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 01:43:08,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 01:43:08,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 01:43:08,890 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 01:43:08,890 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 01:43:08,891 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 01:43:08,891 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 01:43:08,891 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 01:43:08,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 01:43:08,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 01:43:08,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 01:43:08,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 01:43:08,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 01:43:08,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 01:43:08,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 01:43:08,893 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 01:43:08,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 01:43:08,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 01:43:08,893 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 01:43:08,893 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 01:43:08,893 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 01:43:09,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 01:43:09,232 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 01:43:09,238 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 01:43:09,240 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 01:43:09,241 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 01:43:09,242 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-10-15 01:43:09,307 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dfc67dcf/f6c7ce22d4a84233bb97a4b990e0f1ad/FLAG8bf054d7d [2020-10-15 01:43:09,852 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 01:43:09,852 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-10-15 01:43:09,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dfc67dcf/f6c7ce22d4a84233bb97a4b990e0f1ad/FLAG8bf054d7d [2020-10-15 01:43:10,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6dfc67dcf/f6c7ce22d4a84233bb97a4b990e0f1ad [2020-10-15 01:43:10,127 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 01:43:10,128 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 01:43:10,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 01:43:10,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 01:43:10,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 01:43:10,133 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:43:10" (1/1) ... [2020-10-15 01:43:10,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a1e51c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:10, skipping insertion in model container [2020-10-15 01:43:10,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:43:10" (1/1) ... [2020-10-15 01:43:10,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 01:43:10,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 01:43:10,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 01:43:10,613 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 01:43:10,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 01:43:10,752 INFO L208 MainTranslator]: Completed translation [2020-10-15 01:43:10,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:10 WrapperNode [2020-10-15 01:43:10,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 01:43:10,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 01:43:10,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 01:43:10,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 01:43:10,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:10" (1/1) ... [2020-10-15 01:43:10,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:10" (1/1) ... [2020-10-15 01:43:10,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:10" (1/1) ... [2020-10-15 01:43:10,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:10" (1/1) ... [2020-10-15 01:43:10,814 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:10" (1/1) ... [2020-10-15 01:43:10,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:10" (1/1) ... [2020-10-15 01:43:10,829 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:10" (1/1) ... [2020-10-15 01:43:10,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 01:43:10,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 01:43:10,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 01:43:10,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 01:43:10,839 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:10" (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 01:43:10,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 01:43:10,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 01:43:10,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-10-15 01:43:10,913 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-10-15 01:43:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-10-15 01:43:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-10-15 01:43:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-10-15 01:43:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-10-15 01:43:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-10-15 01:43:10,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-10-15 01:43:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-10-15 01:43:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-10-15 01:43:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-10-15 01:43:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-10-15 01:43:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-10-15 01:43:10,915 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-10-15 01:43:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-10-15 01:43:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 01:43:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-10-15 01:43:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-10-15 01:43:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-10-15 01:43:10,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-10-15 01:43:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-10-15 01:43:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-10-15 01:43:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-10-15 01:43:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-10-15 01:43:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-10-15 01:43:10,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-10-15 01:43:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-10-15 01:43:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-10-15 01:43:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-10-15 01:43:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-10-15 01:43:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-10-15 01:43:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-10-15 01:43:10,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-10-15 01:43:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-10-15 01:43:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-10-15 01:43:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-10-15 01:43:10,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-10-15 01:43:10,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 01:43:10,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 01:43:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-15 01:43:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-10-15 01:43:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-10-15 01:43:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-10-15 01:43:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-10-15 01:43:10,920 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-15 01:43:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-15 01:43:10,921 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-15 01:43:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-10-15 01:43:10,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-15 01:43:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-15 01:43:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 01:43:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-15 01:43:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-10-15 01:43:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 01:43:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-10-15 01:43:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-10-15 01:43:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 01:43:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-10-15 01:43:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-10-15 01:43:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 01:43:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-10-15 01:43:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-10-15 01:43:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-10-15 01:43:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-10-15 01:43:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-10-15 01:43:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-10-15 01:43:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-10-15 01:43:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-10-15 01:43:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-10-15 01:43:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-10-15 01:43:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 01:43:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-10-15 01:43:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-10-15 01:43:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-10-15 01:43:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-10-15 01:43:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-10-15 01:43:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-10-15 01:43:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-10-15 01:43:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-10-15 01:43:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-10-15 01:43:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-10-15 01:43:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-10-15 01:43:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-10-15 01:43:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-10-15 01:43:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-10-15 01:43:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-10-15 01:43:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-10-15 01:43:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 01:43:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-15 01:43:10,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 01:43:11,937 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 01:43:11,938 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-15 01:43:11,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:43:11 BoogieIcfgContainer [2020-10-15 01:43:11,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 01:43:11,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 01:43:11,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 01:43:11,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 01:43:11,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:43:10" (1/3) ... [2020-10-15 01:43:11,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3c8ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:43:11, skipping insertion in model container [2020-10-15 01:43:11,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:43:10" (2/3) ... [2020-10-15 01:43:11,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3c8ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:43:11, skipping insertion in model container [2020-10-15 01:43:11,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:43:11" (3/3) ... [2020-10-15 01:43:11,952 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product20.cil.c [2020-10-15 01:43:11,964 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 01:43:11,972 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 01:43:11,987 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 01:43:12,012 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 01:43:12,012 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 01:43:12,013 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 01:43:12,013 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 01:43:12,013 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 01:43:12,013 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 01:43:12,013 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 01:43:12,014 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 01:43:12,041 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-10-15 01:43:12,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 01:43:12,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:43:12,052 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 01:43:12,053 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:43:12,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:43:12,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1020125937, now seen corresponding path program 1 times [2020-10-15 01:43:12,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:43:12,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451880365] [2020-10-15 01:43:12,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:43:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:12,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:12,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:13,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:14,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:14,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-15 01:43:14,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 01:43:14,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2185 [2020-10-15 01:43:14,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:14,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:14,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 01:43:14,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:14,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-15 01:43:14,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 01:43:14,958 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 01:43:14,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:43:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:14,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:15,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:15,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:15,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:15,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-15 01:43:15,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:15,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 01:43:15,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:15,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 01:43:15,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:15,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:15,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:15,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:15,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:43:15,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:15,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:15,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:15,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:15,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 01:43:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:15,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:15,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:15,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:15,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:15,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:15,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:15,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:15,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:15,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:15,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 01:43:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:15,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:15,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:15,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:15,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:15,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 01:43:15,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:15,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:15,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:15,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 01:43:15,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:15,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:15,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:15,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:15,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:15,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:43:15,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:15,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:15,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:15,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:15,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-15 01:43:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:15,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:15,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:15,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:15,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:15,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:43:15,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:15,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:15,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:15,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:15,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:15,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:15,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-15 01:43:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:15,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:15,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:15,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:15,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:15,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 01:43:15,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:15,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 01:43:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:15,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:15,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:15,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-15 01:43:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:15,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:15,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:15,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:15,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:15,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:15,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:15,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:43:15,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:15,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:43:15,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:15,182 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 01:43:15,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451880365] [2020-10-15 01:43:15,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:43:15,185 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-15 01:43:15,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978095300] [2020-10-15 01:43:15,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 01:43:15,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:43:15,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 01:43:15,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-15 01:43:15,216 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 7 states. [2020-10-15 01:43:15,830 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:43:16,999 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:43:17,332 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 01:43:17,661 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-15 01:43:17,905 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:43:18,292 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:43:19,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:43:19,126 INFO L93 Difference]: Finished difference Result 394 states and 534 transitions. [2020-10-15 01:43:19,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 01:43:19,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-15 01:43:19,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:43:19,143 INFO L225 Difference]: With dead ends: 394 [2020-10-15 01:43:19,144 INFO L226 Difference]: Without dead ends: 252 [2020-10-15 01:43:19,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-15 01:43:19,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-15 01:43:19,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 214. [2020-10-15 01:43:19,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-10-15 01:43:19,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 262 transitions. [2020-10-15 01:43:19,270 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 262 transitions. Word has length 52 [2020-10-15 01:43:19,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:43:19,271 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 262 transitions. [2020-10-15 01:43:19,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 01:43:19,272 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 262 transitions. [2020-10-15 01:43:19,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-15 01:43:19,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:43:19,278 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 01:43:19,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 01:43:19,278 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:43:19,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:43:19,279 INFO L82 PathProgramCache]: Analyzing trace with hash -1867713125, now seen corresponding path program 1 times [2020-10-15 01:43:19,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:43:19,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811159085] [2020-10-15 01:43:19,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:43:19,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:19,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:19,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:19,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:20,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:21,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:24,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:24,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-15 01:43:24,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 01:43:24,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-15 01:43:24,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:24,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:24,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-15 01:43:24,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:24,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-15 01:43:24,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:24,601 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 01:43:24,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:43:24,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:24,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:24,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:24,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:24,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:24,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-15 01:43:24,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:24,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:24,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:24,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 01:43:24,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:24,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 01:43:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:24,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:24,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:24,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:24,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:24,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:24,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:24,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:24,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:24,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:24,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:24,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 01:43:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:24,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:24,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:24,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:24,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:24,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:43:24,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:24,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:24,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:24,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:24,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:24,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:24,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 01:43:24,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:24,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:24,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:24,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:24,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:24,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:43:24,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:24,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:24,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:24,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:24,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:24,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 01:43:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:24,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:24,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:24,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:24,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:24,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:24,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:24,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:24,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:24,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:24,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:24,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:24,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-15 01:43:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:24,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:24,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:24,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:24,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:24,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 01:43:24,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:24,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 01:43:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-15 01:43:24,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 01:43:24,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:24,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-15 01:43:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:24,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:24,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:24,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:24,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:24,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:43:24,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:24,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:24,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:24,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:24,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-15 01:43:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:24,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:24,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:24,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:24,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 01:43:24,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:24,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 01:43:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:24,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:24,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:24,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-15 01:43:24,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:24,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:24,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:24,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:24,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:24,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:24,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:24,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:24,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:43:24,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:24,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:43:24,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:24,837 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 01:43:24,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811159085] [2020-10-15 01:43:24,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:43:24,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-15 01:43:24,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230582901] [2020-10-15 01:43:24,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 01:43:24,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:43:24,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 01:43:24,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-15 01:43:24,841 INFO L87 Difference]: Start difference. First operand 214 states and 262 transitions. Second operand 10 states. [2020-10-15 01:43:25,342 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:43:26,207 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:43:26,980 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 187 [2020-10-15 01:43:27,283 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:43:27,807 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:43:28,187 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:43:28,513 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-15 01:43:28,865 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:43:29,519 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 189 [2020-10-15 01:43:31,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:43:31,515 INFO L93 Difference]: Finished difference Result 661 states and 885 transitions. [2020-10-15 01:43:31,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 01:43:31,516 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 57 [2020-10-15 01:43:31,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:43:31,525 INFO L225 Difference]: With dead ends: 661 [2020-10-15 01:43:31,525 INFO L226 Difference]: Without dead ends: 517 [2020-10-15 01:43:31,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=116, Invalid=390, Unknown=0, NotChecked=0, Total=506 [2020-10-15 01:43:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2020-10-15 01:43:31,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 437. [2020-10-15 01:43:31,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-15 01:43:31,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 530 transitions. [2020-10-15 01:43:31,640 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 530 transitions. Word has length 57 [2020-10-15 01:43:31,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:43:31,641 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 530 transitions. [2020-10-15 01:43:31,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 01:43:31,641 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 530 transitions. [2020-10-15 01:43:31,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-15 01:43:31,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:43:31,646 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] [2020-10-15 01:43:31,646 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 01:43:31,646 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:43:31,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:43:31,646 INFO L82 PathProgramCache]: Analyzing trace with hash -562629994, now seen corresponding path program 1 times [2020-10-15 01:43:31,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:43:31,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627386538] [2020-10-15 01:43:31,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:43:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:31,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:32,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:32,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 01:43:32,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:32,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-10-15 01:43:32,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:32,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:32,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 01:43:32,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:32,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 01:43:32,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:32,503 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-15 01:43:32,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 01:43:32,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:32,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:32,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:32,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:32,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:32,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-15 01:43:32,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:32,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:32,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:32,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:32,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-15 01:43:32,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:32,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-15 01:43:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:32,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:32,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:32,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:32,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:32,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:43:32,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:32,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:32,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:32,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:32,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 01:43:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:32,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:32,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:32,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:32,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:32,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:32,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:32,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:32,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:32,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:32,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:32,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 01:43:32,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-10-15 01:43:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:32,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:32,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:32,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:32,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:32,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:43:32,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:32,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:32,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:32,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:32,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:32,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:32,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 01:43:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:32,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:32,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:32,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 01:43:32,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:32,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:32,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:32,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:32,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-15 01:43:32,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 01:43:32,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-15 01:43:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:32,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:32,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:32,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:32,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:32,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 01:43:32,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:32,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 01:43:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 01:43:32,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 01:43:32,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:32,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 01:43:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:32,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:32,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:32,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:32,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:32,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:32,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:32,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:32,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:43:32,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:32,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:43:32,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:32,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-15 01:43:32,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:32,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:32,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:32,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:32,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:32,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:32,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:32,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:32,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:43:32,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:32,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:43:32,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:32,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-15 01:43:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 01:43:32,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 01:43:32,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 01:43:32,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 01:43:32,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 01:43:32,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 01:43:32,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 01:43:32,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 01:43:32,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 01:43:32,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-15 01:43:32,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 01:43:32,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 01:43:32,701 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 01:43:32,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627386538] [2020-10-15 01:43:32,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 01:43:32,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 01:43:32,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826913758] [2020-10-15 01:43:32,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 01:43:32,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 01:43:32,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 01:43:32,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-15 01:43:32,704 INFO L87 Difference]: Start difference. First operand 437 states and 530 transitions. Second operand 5 states. [2020-10-15 01:43:33,050 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-15 01:43:34,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 01:43:34,917 INFO L93 Difference]: Finished difference Result 1365 states and 1742 transitions. [2020-10-15 01:43:34,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 01:43:34,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-10-15 01:43:34,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 01:43:34,927 INFO L225 Difference]: With dead ends: 1365 [2020-10-15 01:43:34,927 INFO L226 Difference]: Without dead ends: 952 [2020-10-15 01:43:34,929 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 01:43:34,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 952 states. [2020-10-15 01:43:35,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 952 to 819. [2020-10-15 01:43:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 819 states. [2020-10-15 01:43:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1003 transitions. [2020-10-15 01:43:35,119 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1003 transitions. Word has length 62 [2020-10-15 01:43:35,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 01:43:35,122 INFO L479 AbstractCegarLoop]: Abstraction has 819 states and 1003 transitions. [2020-10-15 01:43:35,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 01:43:35,122 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1003 transitions. [2020-10-15 01:43:35,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-15 01:43:35,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 01:43:35,128 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] [2020-10-15 01:43:35,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 01:43:35,128 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 01:43:35,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 01:43:35,129 INFO L82 PathProgramCache]: Analyzing trace with hash 935934029, now seen corresponding path program 1 times [2020-10-15 01:43:35,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 01:43:35,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492827244] [2020-10-15 01:43:35,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 01:43:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 01:43:35,163 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 01:43:35,164 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 01:43:35,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 01:43:35,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:43:35 BoogieIcfgContainer [2020-10-15 01:43:35,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 01:43:35,191 INFO L168 Benchmark]: Toolchain (without parser) took 25063.08 ms. Allocated memory was 146.8 MB in the beginning and 622.9 MB in the end (delta: 476.1 MB). Free memory was 100.8 MB in the beginning and 248.2 MB in the end (delta: -147.4 MB). Peak memory consumption was 328.6 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:35,192 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-10-15 01:43:35,193 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.28 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 100.8 MB in the beginning and 174.0 MB in the end (delta: -73.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:35,194 INFO L168 Benchmark]: Boogie Preprocessor took 83.86 ms. Allocated memory is still 204.5 MB. Free memory was 174.0 MB in the beginning and 170.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:35,195 INFO L168 Benchmark]: RCFGBuilder took 1105.55 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 170.0 MB in the beginning and 198.1 MB in the end (delta: -28.1 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:35,196 INFO L168 Benchmark]: TraceAbstraction took 23244.49 ms. Allocated memory was 235.9 MB in the beginning and 622.9 MB in the end (delta: 386.9 MB). Free memory was 196.4 MB in the beginning and 248.2 MB in the end (delta: -51.8 MB). Peak memory consumption was 335.1 MB. Max. memory is 7.1 GB. [2020-10-15 01:43:35,200 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 146.8 MB. Free memory was 120.1 MB in the beginning and 119.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 624.28 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 100.8 MB in the beginning and 174.0 MB in the end (delta: -73.2 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.86 ms. Allocated memory is still 204.5 MB. Free memory was 174.0 MB in the beginning and 170.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1105.55 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 170.0 MB in the beginning and 198.1 MB in the end (delta: -28.1 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 23244.49 ms. Allocated memory was 235.9 MB in the beginning and 622.9 MB in the end (delta: 386.9 MB). Free memory was 196.4 MB in the beginning and 248.2 MB in the end (delta: -51.8 MB). Peak memory consumption was 335.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 927]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L522] int retValue_acc ; [L523] int tmp ; [L527] FCALL select_helpers() [L528] FCALL select_features() [L529] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L529] RET, EXPR valid_product() [L529] tmp = valid_product() [L531] COND TRUE \read(tmp) [L533] FCALL setup() [L534] CALL runTest() [L516] CALL test() [L766] int splverifierCounter ; [L767] int tmp ; [L768] int tmp___0 ; [L769] int tmp___1 ; [L770] int tmp___2 ; [L773] splverifierCounter = 0 [L775] COND TRUE 1 [L777] COND TRUE splverifierCounter < 4 [L783] tmp = __VERIFIER_nondet_int() [L785] COND TRUE \read(tmp) [L787] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L787] RET waterRise() [L793] tmp___0 = __VERIFIER_nondet_int() [L795] COND FALSE !(\read(tmp___0)) [L803] tmp___2 = __VERIFIER_nondet_int() [L805] COND FALSE !(\read(tmp___2)) [L811] tmp___1 = __VERIFIER_nondet_int() [L813] COND TRUE \read(tmp___1) [L815] CALL stopSystem() [L745] COND FALSE !(\read(pumpRunning)) [L752] systemActive = 0 [L815] RET stopSystem() [L822] CALL timeShift() [L597] COND FALSE !(\read(pumpRunning)) [L604] COND FALSE !(\read(systemActive)) [L612] CALL __utac_acc__Specification3_spec__1() [L550] int tmp ; [L551] int tmp___0 ; [L552] int tmp___1 ; [L556] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L556] RET, EXPR isMethaneLevelCritical() [L556] tmp = isMethaneLevelCritical() [L558] COND FALSE !(\read(tmp)) [L562] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L562] RET, EXPR getWaterLevel() [L562] tmp___0 = getWaterLevel() [L564] COND TRUE tmp___0 == 2 [L566] CALL, EXPR isPumpRunning() [L678] int retValue_acc ; [L681] retValue_acc = pumpRunning [L682] return (retValue_acc); [L566] RET, EXPR isPumpRunning() [L566] tmp___1 = isPumpRunning() [L568] COND FALSE !(\read(tmp___1)) [L572] CALL __automaton_fail() [L927] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.1s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 12.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 497 SDtfs, 965 SDslu, 634 SDs, 0 SdLazy, 2752 SolverSat, 642 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 64 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=819occurred 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: 0.4s AutomataMinimizationTime, 3 MinimizatonAttempts, 251 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 238 NumberOfCodeBlocks, 238 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 51372 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...