/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:43:02,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:43:02,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:43:02,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:43:02,768 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:43:02,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:43:02,782 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:43:02,787 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:43:02,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:43:02,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:43:02,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:43:02,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:43:02,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:43:02,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:43:02,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:43:02,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:43:02,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:43:02,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:43:02,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:43:02,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:43:02,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:43:02,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:43:02,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:43:02,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:43:02,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:43:02,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:43:02,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:43:02,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:43:02,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:43:02,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:43:02,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:43:02,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:43:02,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:43:02,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:43:02,837 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:43:02,837 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:43:02,838 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:43:02,838 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:43:02,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:43:02,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:43:02,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:43:02,841 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:43:02,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:43:02,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:43:02,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:43:02,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:43:02,868 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:43:02,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:43:02,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:43:02,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:43:02,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:43:02,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:43:02,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:43:02,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:43:02,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:43:02,870 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:43:02,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:43:02,870 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:43:02,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:43:02,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:43:02,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:43:02,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:43:02,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:43:02,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:43:02,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:43:02,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:43:02,872 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:43:02,872 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:43:02,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:43:02,873 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:43:02,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:43:02,873 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:43:03,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:43:03,335 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:43:03,341 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:43:03,345 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:43:03,345 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:43:03,347 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c [2020-09-25 08:43:03,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/874e1895d/1e89da4208be441a89e92d42149962a8/FLAGf794907b4 [2020-09-25 08:43:04,113 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:43:04,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product63.cil.c [2020-09-25 08:43:04,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/874e1895d/1e89da4208be441a89e92d42149962a8/FLAGf794907b4 [2020-09-25 08:43:04,347 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/874e1895d/1e89da4208be441a89e92d42149962a8 [2020-09-25 08:43:04,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:43:04,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:43:04,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:43:04,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:43:04,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:43:04,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:43:04" (1/1) ... [2020-09-25 08:43:04,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:43:04, skipping insertion in model container [2020-09-25 08:43:04,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:43:04" (1/1) ... [2020-09-25 08:43:04,387 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:43:04,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:43:04,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:43:04,945 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:43:05,117 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:43:05,178 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:43:05,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:43:05 WrapperNode [2020-09-25 08:43:05,179 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:43:05,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:43:05,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:43:05,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:43:05,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:43:05" (1/1) ... [2020-09-25 08:43:05,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:43:05" (1/1) ... [2020-09-25 08:43:05,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:43:05" (1/1) ... [2020-09-25 08:43:05,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:43:05" (1/1) ... [2020-09-25 08:43:05,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:43:05" (1/1) ... [2020-09-25 08:43:05,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:43:05" (1/1) ... [2020-09-25 08:43:05,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:43:05" (1/1) ... [2020-09-25 08:43:05,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:43:05,280 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:43:05,280 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:43:05,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:43:05,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:43:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:43:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:43:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:43:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 08:43:05,359 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 08:43:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 08:43:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 08:43:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 08:43:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:43:05,360 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 08:43:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 08:43:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 08:43:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 08:43:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 08:43:05,361 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 08:43:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 08:43:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 08:43:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 08:43:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 08:43:05,362 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 08:43:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 08:43:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 08:43:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 08:43:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 08:43:05,363 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-25 08:43:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 08:43:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-25 08:43:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 08:43:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 08:43:05,364 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 08:43:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 08:43:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 08:43:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 08:43:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 08:43:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-25 08:43:05,365 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 08:43:05,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 08:43:05,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 08:43:05,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 08:43:05,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 08:43:05,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 08:43:05,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 08:43:05,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 08:43:05,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 08:43:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:43:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:43:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 08:43:05,367 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 08:43:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 08:43:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 08:43:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 08:43:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 08:43:05,368 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 08:43:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 08:43:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 08:43:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 08:43:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 08:43:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 08:43:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 08:43:05,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:43:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 08:43:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 08:43:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 08:43:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 08:43:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-25 08:43:05,370 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 08:43:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 08:43:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 08:43:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 08:43:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-25 08:43:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 08:43:05,371 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 08:43:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 08:43:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-25 08:43:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-09-25 08:43:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 08:43:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-09-25 08:43:05,372 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 08:43:05,373 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-09-25 08:43:05,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:43:05,373 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 08:43:05,373 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 08:43:05,373 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 08:43:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:43:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:43:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 08:43:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:43:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:43:05,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:43:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:43:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 08:43:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:43:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 08:43:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 08:43:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:43:05,375 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 08:43:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 08:43:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 08:43:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:43:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 08:43:05,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:43:06,574 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:43:06,574 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 08:43:06,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:43:06 BoogieIcfgContainer [2020-09-25 08:43:06,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:43:06,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:43:06,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:43:06,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:43:06,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:43:04" (1/3) ... [2020-09-25 08:43:06,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab49a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:43:06, skipping insertion in model container [2020-09-25 08:43:06,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:43:05" (2/3) ... [2020-09-25 08:43:06,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ab49a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:43:06, skipping insertion in model container [2020-09-25 08:43:06,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:43:06" (3/3) ... [2020-09-25 08:43:06,592 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product63.cil.c [2020-09-25 08:43:06,604 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:43:06,616 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:43:06,639 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:43:06,672 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:43:06,672 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:43:06,672 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:43:06,672 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:43:06,672 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:43:06,672 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:43:06,673 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:43:06,673 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:43:06,704 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states. [2020-09-25 08:43:06,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 08:43:06,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:43:06,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:43:06,727 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:43:06,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:43:06,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1710422987, now seen corresponding path program 1 times [2020-09-25 08:43:06,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:43:06,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780560029] [2020-09-25 08:43:06,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:43:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:07,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:07,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:08,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:12,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:12,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 08:43:12,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:43:12,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 08:43:12,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:12,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:12,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:12,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 08:43:12,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:12,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 08:43:12,528 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:43:12,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:43:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:12,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:12,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:12,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:43:12,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:12,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 08:43:12,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:12,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:12,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:12,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:12,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:12,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:43:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:12,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:12,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:12,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:43:12,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:12,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:43:12,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:12,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:12,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:43:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:12,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:12,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:12,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:43:12,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:43:12,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:12,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:12,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:12,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:12,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:12,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:12,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:43:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:12,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:12,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:12,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:12,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:12,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:43:12,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:12,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:12,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:12,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:12,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:12,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:12,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:43:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:12,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:12,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:12,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:43:12,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:12,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:43:12,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:12,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:12,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:12,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 08:43:12,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:12,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:12,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:12,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:12,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:43:12,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:12,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:43:12,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:12,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:12,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 08:43:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:12,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:12,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:12,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:12,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:12,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:43:12,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:12,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:12,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:12,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:43:12,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:12,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 08:43:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:12,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:12,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:12,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:12,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:12,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:43:12,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:12,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:43:12,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:12,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:43:12,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780560029] [2020-09-25 08:43:12,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:43:12,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:43:12,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513435255] [2020-09-25 08:43:12,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:43:12,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:43:12,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:43:12,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:43:12,923 INFO L87 Difference]: Start difference. First operand 358 states. Second operand 3 states. [2020-09-25 08:43:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:43:14,593 INFO L93 Difference]: Finished difference Result 587 states and 700 transitions. [2020-09-25 08:43:14,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:43:14,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-25 08:43:14,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:43:14,618 INFO L225 Difference]: With dead ends: 587 [2020-09-25 08:43:14,618 INFO L226 Difference]: Without dead ends: 354 [2020-09-25 08:43:14,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:43:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-09-25 08:43:14,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 307. [2020-09-25 08:43:14,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-09-25 08:43:14,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 339 transitions. [2020-09-25 08:43:14,748 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 339 transitions. Word has length 153 [2020-09-25 08:43:14,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:43:14,749 INFO L479 AbstractCegarLoop]: Abstraction has 307 states and 339 transitions. [2020-09-25 08:43:14,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:43:14,750 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 339 transitions. [2020-09-25 08:43:14,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 08:43:14,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:43:14,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:43:14,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:43:14,756 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:43:14,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:43:14,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1065336794, now seen corresponding path program 1 times [2020-09-25 08:43:14,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:43:14,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192596395] [2020-09-25 08:43:14,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:43:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:14,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:14,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:16,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:19,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:19,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 08:43:19,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:43:19,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 08:43:19,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:19,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:19,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:43:19,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 08:43:19,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 08:43:19,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:20,106 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:43:20,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:43:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:20,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:20,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:20,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:43:20,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:20,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 08:43:20,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:20,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:20,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:20,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:20,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:20,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:20,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:43:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:20,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:20,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:20,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:43:20,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:20,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:43:20,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:20,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:20,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:20,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:20,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:43:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:20,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:20,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:20,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:43:20,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:20,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:43:20,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:20,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:20,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:20,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:20,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:20,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:43:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:20,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:20,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:20,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:20,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:20,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:43:20,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:20,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:20,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:20,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:20,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:20,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:20,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:43:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:20,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:20,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:20,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:43:20,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:20,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:43:20,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:20,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:20,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:20,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:20,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:20,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:20,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 08:43:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:20,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:20,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:20,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:20,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:20,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:43:20,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:20,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:20,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:20,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:43:20,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:20,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:20,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 08:43:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:20,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:20,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:20,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:20,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:20,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:43:20,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:20,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:20,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:20,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:43:20,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:20,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:20,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 08:43:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:20,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:20,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:20,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:20,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:20,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:43:20,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:20,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:43:20,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:20,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:20,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:43:20,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192596395] [2020-09-25 08:43:20,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:43:20,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:43:20,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277968478] [2020-09-25 08:43:20,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:43:20,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:43:20,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:43:20,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:43:20,335 INFO L87 Difference]: Start difference. First operand 307 states and 339 transitions. Second operand 4 states. [2020-09-25 08:43:21,082 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 08:43:22,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:43:22,729 INFO L93 Difference]: Finished difference Result 498 states and 567 transitions. [2020-09-25 08:43:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:43:22,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 08:43:22,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:43:22,739 INFO L225 Difference]: With dead ends: 498 [2020-09-25 08:43:22,739 INFO L226 Difference]: Without dead ends: 337 [2020-09-25 08:43:22,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:43:22,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-09-25 08:43:22,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 297. [2020-09-25 08:43:22,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-09-25 08:43:22,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 326 transitions. [2020-09-25 08:43:22,872 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 326 transitions. Word has length 154 [2020-09-25 08:43:22,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:43:22,875 INFO L479 AbstractCegarLoop]: Abstraction has 297 states and 326 transitions. [2020-09-25 08:43:22,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:43:22,876 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 326 transitions. [2020-09-25 08:43:22,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 08:43:22,882 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:43:22,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:43:22,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:43:22,883 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:43:22,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:43:22,884 INFO L82 PathProgramCache]: Analyzing trace with hash -2091062943, now seen corresponding path program 1 times [2020-09-25 08:43:22,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:43:22,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1512088740] [2020-09-25 08:43:22,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:43:22,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:23,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:23,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:27,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:27,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 08:43:27,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:43:27,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4826 [2020-09-25 08:43:27,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:27,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:27,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:43:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 08:43:27,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 08:43:27,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:28,116 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:43:28,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:43:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:28,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:28,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:28,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:43:28,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:28,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 08:43:28,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:28,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:28,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:43:28,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:28,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:43:28,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:28,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:43:28,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:28,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:28,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:28,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:43:28,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:28,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:43:28,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:28,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:43:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:43:28,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:43:28,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:43:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:28,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:28,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:28,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:43:28,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:28,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:43:28,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:28,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:28,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:43:28,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:28,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:43:28,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:28,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:43:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:28,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:28,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:28,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:28,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:28,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:43:28,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:28,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:28,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:43:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:28,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:43:28,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:43:28,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:43:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:28,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:28,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:43:28,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:28,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:43:28,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:28,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:43:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:28,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:43:28,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:28,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 08:43:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:28,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:28,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:28,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:28,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:28,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:43:28,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:28,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:28,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:43:28,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:28,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:43:28,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:28,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 08:43:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:28,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:28,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:28,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:28,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:28,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:43:28,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:28,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:28,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:43:28,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:43:28,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:28,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-25 08:43:28,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:28,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:28,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:28,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:28,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:28,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:43:28,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:28,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:43:28,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:28,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:43:28,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1512088740] [2020-09-25 08:43:28,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:43:28,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 08:43:28,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431599077] [2020-09-25 08:43:28,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:43:28,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:43:28,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:43:28,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:43:28,591 INFO L87 Difference]: Start difference. First operand 297 states and 326 transitions. Second operand 8 states. [2020-09-25 08:43:29,095 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:43:30,918 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:43:31,272 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:43:31,726 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:43:32,158 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:43:32,475 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:43:32,790 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:43:33,126 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:43:34,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:43:34,692 INFO L93 Difference]: Finished difference Result 707 states and 849 transitions. [2020-09-25 08:43:34,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:43:34,693 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2020-09-25 08:43:34,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:43:34,699 INFO L225 Difference]: With dead ends: 707 [2020-09-25 08:43:34,699 INFO L226 Difference]: Without dead ends: 520 [2020-09-25 08:43:34,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:43:34,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-09-25 08:43:34,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 468. [2020-09-25 08:43:34,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2020-09-25 08:43:34,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 533 transitions. [2020-09-25 08:43:34,779 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 533 transitions. Word has length 163 [2020-09-25 08:43:34,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:43:34,780 INFO L479 AbstractCegarLoop]: Abstraction has 468 states and 533 transitions. [2020-09-25 08:43:34,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:43:34,780 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 533 transitions. [2020-09-25 08:43:34,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-09-25 08:43:34,784 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:43:34,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:43:34,784 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:43:34,784 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:43:34,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:43:34,785 INFO L82 PathProgramCache]: Analyzing trace with hash -1766159415, now seen corresponding path program 1 times [2020-09-25 08:43:34,785 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:43:34,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627042429] [2020-09-25 08:43:34,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:43:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:34,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:35,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:35,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-09-25 08:43:35,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:35,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-25 08:43:35,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:35,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:35,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:43:35,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 08:43:35,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:43:35,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:36,166 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:43:36,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:43:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:36,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:36,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:36,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:43:36,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:36,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-09-25 08:43:36,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:36,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:43:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:36,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 08:43:36,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:36,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:43:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:36,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:36,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:36,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:43:36,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:36,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:43:36,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:36,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:36,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:43:36,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:36,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:43:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:36,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:43:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:36,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:36,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:36,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:43:36,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:36,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:43:36,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:36,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:36,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:43:36,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:36,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:43:36,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:36,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:43:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:36,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:36,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:36,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:36,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:36,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:43:36,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:36,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:43:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:43:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:36,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:43:36,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:36,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:36,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:36,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:43:36,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:36,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:43:36,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:36,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:43:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:36,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:43:36,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:36,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-25 08:43:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:36,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:36,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 08:43:36,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:36,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:43:36,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:36,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:36,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:43:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:43:36,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:43:36,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:36,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-25 08:43:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:36,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:36,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:36,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:36,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:36,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:43:36,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:36,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:36,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:43:36,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:36,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:36,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-09-25 08:43:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:36,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:36,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:36,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:36,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:36,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:43:36,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:36,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:36,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:43:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:36,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:36,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-09-25 08:43:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:43:36,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:43:36,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:43:36,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:43:36,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:43:36,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:43:36,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:43:36,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:43:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:43:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:43:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:43:36,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:43:36,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:43:36,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627042429] [2020-09-25 08:43:36,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:43:36,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:43:36,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404068455] [2020-09-25 08:43:36,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:43:36,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:43:36,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:43:36,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:43:36,645 INFO L87 Difference]: Start difference. First operand 468 states and 533 transitions. Second operand 5 states. [2020-09-25 08:43:37,082 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:43:39,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:43:39,728 INFO L93 Difference]: Finished difference Result 1314 states and 1592 transitions. [2020-09-25 08:43:39,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:43:39,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-09-25 08:43:39,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:43:39,737 INFO L225 Difference]: With dead ends: 1314 [2020-09-25 08:43:39,737 INFO L226 Difference]: Without dead ends: 956 [2020-09-25 08:43:39,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:43:39,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2020-09-25 08:43:39,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 817. [2020-09-25 08:43:39,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 817 states. [2020-09-25 08:43:39,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 948 transitions. [2020-09-25 08:43:39,864 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 948 transitions. Word has length 168 [2020-09-25 08:43:39,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:43:39,865 INFO L479 AbstractCegarLoop]: Abstraction has 817 states and 948 transitions. [2020-09-25 08:43:39,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:43:39,865 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 948 transitions. [2020-09-25 08:43:39,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 08:43:39,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:43:39,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:43:39,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:43:39,871 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:43:39,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:43:39,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1555840203, now seen corresponding path program 1 times [2020-09-25 08:43:39,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:43:39,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989013780] [2020-09-25 08:43:39,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:43:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:43:39,934 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:43:39,935 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:43:39,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:43:39,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:43:39 BoogieIcfgContainer [2020-09-25 08:43:39,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:43:39,970 INFO L168 Benchmark]: Toolchain (without parser) took 35608.02 ms. Allocated memory was 139.5 MB in the beginning and 687.3 MB in the end (delta: 547.9 MB). Free memory was 101.9 MB in the beginning and 411.7 MB in the end (delta: -309.7 MB). Peak memory consumption was 238.2 MB. Max. memory is 7.1 GB. [2020-09-25 08:43:39,971 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 08:43:39,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 812.84 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 101.3 MB in the beginning and 171.7 MB in the end (delta: -70.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:43:39,973 INFO L168 Benchmark]: Boogie Preprocessor took 99.24 ms. Allocated memory is still 203.9 MB. Free memory was 171.7 MB in the beginning and 167.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-25 08:43:39,973 INFO L168 Benchmark]: RCFGBuilder took 1302.74 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 167.6 MB in the beginning and 172.4 MB in the end (delta: -4.8 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. [2020-09-25 08:43:39,974 INFO L168 Benchmark]: TraceAbstraction took 33383.77 ms. Allocated memory was 237.0 MB in the beginning and 687.3 MB in the end (delta: 450.4 MB). Free memory was 171.0 MB in the beginning and 411.7 MB in the end (delta: -240.7 MB). Peak memory consumption was 209.7 MB. Max. memory is 7.1 GB. [2020-09-25 08:43:39,978 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 812.84 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 101.3 MB in the beginning and 171.7 MB in the end (delta: -70.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.24 ms. Allocated memory is still 203.9 MB. Free memory was 171.7 MB in the beginning and 167.6 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1302.74 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 167.6 MB in the beginning and 172.4 MB in the end (delta: -4.8 MB). Peak memory consumption was 83.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33383.77 ms. Allocated memory was 237.0 MB in the beginning and 687.3 MB in the end (delta: 450.4 MB). Free memory was 171.0 MB in the beginning and 411.7 MB in the end (delta: -240.7 MB). Peak memory consumption was 209.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 619]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L188] int pumpRunning = 0; [L189] int systemActive = 1; [L512] int waterLevel = 1; [L513] int methaneLevelCritical = 0; [L827] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L170] int retValue_acc ; [L173] retValue_acc = 1 [L174] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L445] int splverifierCounter ; [L446] int tmp ; [L447] int tmp___0 ; [L448] int tmp___1 ; [L449] int tmp___2 ; [L452] splverifierCounter = 0 [L454] COND TRUE 1 [L456] COND TRUE splverifierCounter < 4 [L462] tmp = __VERIFIER_nondet_int() [L464] COND TRUE \read(tmp) [L466] CALL waterRise() [L530] COND TRUE waterLevel < 2 [L531] waterLevel = waterLevel + 1 [L466] RET waterRise() [L472] tmp___0 = __VERIFIER_nondet_int() [L474] COND FALSE !(\read(tmp___0)) [L482] tmp___2 = __VERIFIER_nondet_int() [L484] COND FALSE !(\read(tmp___2)) [L488] tmp___1 = __VERIFIER_nondet_int() [L490] COND TRUE \read(tmp___1) [L492] CALL stopSystem() [L432] COND FALSE !(\read(pumpRunning)) [L439] systemActive = 0 [L492] RET stopSystem() [L499] CALL timeShift() [L196] COND FALSE !(\read(pumpRunning)) [L203] COND FALSE !(\read(systemActive)) [L211] CALL __utac_acc__Specification3_spec__1() [L625] int tmp ; [L626] int tmp___0 ; [L627] int tmp___1 ; [L631] CALL, EXPR isMethaneLevelCritical() [L551] int retValue_acc ; [L554] retValue_acc = methaneLevelCritical [L555] return (retValue_acc); [L631] RET, EXPR isMethaneLevelCritical() [L631] tmp = isMethaneLevelCritical() [L633] COND FALSE !(\read(tmp)) [L637] CALL, EXPR getWaterLevel() [L583] int retValue_acc ; [L586] retValue_acc = waterLevel [L587] return (retValue_acc); [L637] RET, EXPR getWaterLevel() [L637] tmp___0 = getWaterLevel() [L639] COND TRUE tmp___0 == 2 [L641] CALL, EXPR isPumpRunning() [L346] int retValue_acc ; [L349] retValue_acc = pumpRunning [L350] return (retValue_acc); [L641] RET, EXPR isPumpRunning() [L641] tmp___1 = isPumpRunning() [L643] COND FALSE !(\read(tmp___1)) [L647] CALL __automaton_fail() [L619] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 670 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.2s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1176 SDtfs, 1408 SDslu, 852 SDs, 0 SdLazy, 2599 SolverSat, 486 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 101 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=817occurred in iteration=4, 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, 4 MinimizatonAttempts, 278 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 18.5s InterpolantComputationTime, 815 NumberOfCodeBlocks, 815 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 634 ConstructedInterpolants, 0 QuantifiedInterpolants, 250110 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...