/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_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:41:14,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:41:14,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:41:14,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:41:14,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:41:14,738 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:41:14,740 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:41:14,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:41:14,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:41:14,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:41:14,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:41:14,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:41:14,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:41:14,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:41:14,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:41:14,761 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:41:14,763 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:41:14,764 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:41:14,765 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:41:14,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:41:14,776 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:41:14,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:41:14,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:41:14,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:41:14,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:41:14,791 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:41:14,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:41:14,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:41:14,800 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:41:14,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:41:14,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:41:14,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:41:14,805 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:41:14,806 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:41:14,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:41:14,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:41:14,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:41:14,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:41:14,810 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:41:14,811 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:41:14,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:41:14,813 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 08:41:14,861 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:41:14,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:41:14,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:41:14,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:41:14,864 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:41:14,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:41:14,865 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:41:14,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:41:14,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:41:14,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:41:14,866 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:41:14,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:41:14,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:41:14,867 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:41:14,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:41:14,868 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:41:14,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:41:14,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:41:14,868 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:41:14,868 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:41:14,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:41:14,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:41:14,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:41:14,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:41:14,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:41:14,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:41:14,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:41:14,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:41:14,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:41:14,870 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 08:41:15,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:41:15,336 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:41:15,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:41:15,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:41:15,342 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:41:15,343 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product18.cil.c [2020-09-25 08:41:15,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fc025899/b8daaaf637f7483f9000be91eea0f4a1/FLAGc8148beaa [2020-09-25 08:41:16,028 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:41:16,029 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product18.cil.c [2020-09-25 08:41:16,042 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fc025899/b8daaaf637f7483f9000be91eea0f4a1/FLAGc8148beaa [2020-09-25 08:41:16,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8fc025899/b8daaaf637f7483f9000be91eea0f4a1 [2020-09-25 08:41:16,315 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:41:16,320 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:41:16,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:41:16,321 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:41:16,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:41:16,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:41:16" (1/1) ... [2020-09-25 08:41:16,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c86c800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:16, skipping insertion in model container [2020-09-25 08:41:16,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:41:16" (1/1) ... [2020-09-25 08:41:16,340 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:41:16,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:41:16,857 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:41:16,871 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:41:17,033 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:41:17,070 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:41:17,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:17 WrapperNode [2020-09-25 08:41:17,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:41:17,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:41:17,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:41:17,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:41:17,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:17" (1/1) ... [2020-09-25 08:41:17,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:17" (1/1) ... [2020-09-25 08:41:17,114 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:17" (1/1) ... [2020-09-25 08:41:17,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:17" (1/1) ... [2020-09-25 08:41:17,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:17" (1/1) ... [2020-09-25 08:41:17,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:17" (1/1) ... [2020-09-25 08:41:17,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:17" (1/1) ... [2020-09-25 08:41:17,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:41:17,192 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:41:17,192 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:41:17,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:41:17,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:17" (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 08:41:17,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:41:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:41:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-25 08:41:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-25 08:41:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-25 08:41:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-25 08:41:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-25 08:41:17,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:41:17,290 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-25 08:41:17,290 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-25 08:41:17,291 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-25 08:41:17,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-25 08:41:17,291 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-25 08:41:17,291 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-25 08:41:17,291 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-25 08:41:17,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-25 08:41:17,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-25 08:41:17,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-25 08:41:17,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-25 08:41:17,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-25 08:41:17,294 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-25 08:41:17,294 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-25 08:41:17,294 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-25 08:41:17,295 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-25 08:41:17,295 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-25 08:41:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-25 08:41:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-25 08:41:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-25 08:41:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-25 08:41:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-25 08:41:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-25 08:41:17,297 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-25 08:41:17,297 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-25 08:41:17,297 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-25 08:41:17,297 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-25 08:41:17,298 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-25 08:41:17,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-25 08:41:17,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-25 08:41:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:41:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:41:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-25 08:41:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-25 08:41:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-25 08:41:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-25 08:41:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-25 08:41:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-25 08:41:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-25 08:41:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-25 08:41:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-25 08:41:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-25 08:41:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-25 08:41:17,304 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-25 08:41:17,304 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-25 08:41:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:41:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-25 08:41:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-25 08:41:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-25 08:41:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-25 08:41:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-25 08:41:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 08:41:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 08:41:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:41:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:41:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-25 08:41:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:41:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:41:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:41:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:41:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-25 08:41:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:41:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-25 08:41:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-25 08:41:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:41:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-25 08:41:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-25 08:41:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-25 08:41:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-25 08:41:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-25 08:41:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-25 08:41:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-25 08:41:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-25 08:41:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-25 08:41:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-25 08:41:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-25 08:41:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-25 08:41:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-25 08:41:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-25 08:41:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:41:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 08:41:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:41:18,434 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:41:18,435 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-25 08:41:18,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:41:18 BoogieIcfgContainer [2020-09-25 08:41:18,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:41:18,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:41:18,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:41:18,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:41:18,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:41:16" (1/3) ... [2020-09-25 08:41:18,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac53f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:41:18, skipping insertion in model container [2020-09-25 08:41:18,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:41:17" (2/3) ... [2020-09-25 08:41:18,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ac53f49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:41:18, skipping insertion in model container [2020-09-25 08:41:18,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:41:18" (3/3) ... [2020-09-25 08:41:18,455 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product18.cil.c [2020-09-25 08:41:18,467 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:41:18,479 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:41:18,501 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:41:18,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:41:18,532 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:41:18,532 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:41:18,532 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:41:18,532 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:41:18,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:41:18,533 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:41:18,533 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:41:18,557 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-09-25 08:41:18,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 08:41:18,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:18,578 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 08:41:18,578 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:18,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:18,586 INFO L82 PathProgramCache]: Analyzing trace with hash -255597227, now seen corresponding path program 1 times [2020-09-25 08:41:18,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:18,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523939977] [2020-09-25 08:41:18,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:19,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:19,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:20,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 08:41:24,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:41:24,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-09-25 08:41:24,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:24,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-09-25 08:41:24,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:24,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 08:41:24,681 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:41:24,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:41:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:41:24,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:24,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 08:41:24,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:24,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:24,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:24,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:41:24,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:41:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:24,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:24,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:41:24,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:24,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:24,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:41:24,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:41:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:24,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:24,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:41:24,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:24,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:24,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:41:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:24,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:24,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:41:24,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:24,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:24,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:24,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:41:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:24,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:24,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:41:24,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:24,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:24,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:24,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:24,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-25 08:41:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:24,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:24,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:24,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:24,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:24,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:24,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:24,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:24,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:24,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 08:41:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:24,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:25,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:25,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:25,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:25,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:41:25,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:25,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:25,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:25,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:25,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:25,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:25,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-25 08:41:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:25,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:25,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:25,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:25,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:25,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:41:25,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:25,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:25,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:25,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:25,113 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 08:41:25,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523939977] [2020-09-25 08:41:25,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:41:25,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:41:25,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167177821] [2020-09-25 08:41:25,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:41:25,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:41:25,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:41:25,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:41:25,161 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 3 states. [2020-09-25 08:41:26,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:41:26,463 INFO L93 Difference]: Finished difference Result 444 states and 527 transitions. [2020-09-25 08:41:26,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:41:26,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-09-25 08:41:26,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:41:26,497 INFO L225 Difference]: With dead ends: 444 [2020-09-25 08:41:26,498 INFO L226 Difference]: Without dead ends: 279 [2020-09-25 08:41:26,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:41:26,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-09-25 08:41:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 239. [2020-09-25 08:41:26,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-25 08:41:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 257 transitions. [2020-09-25 08:41:26,680 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 257 transitions. Word has length 153 [2020-09-25 08:41:26,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:41:26,681 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 257 transitions. [2020-09-25 08:41:26,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:41:26,682 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 257 transitions. [2020-09-25 08:41:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 08:41:26,687 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:26,687 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 08:41:26,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:41:26,687 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:26,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:26,688 INFO L82 PathProgramCache]: Analyzing trace with hash 73238065, now seen corresponding path program 1 times [2020-09-25 08:41:26,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:26,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1585885371] [2020-09-25 08:41:26,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:26,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:26,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:28,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:31,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:31,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 08:41:31,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:41:31,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 08:41:31,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:31,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-09-25 08:41:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 08:41:31,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:32,142 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:41:32,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:41:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:32,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:32,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:32,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:41:32,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:32,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 08:41:32,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:32,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:32,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:32,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:41:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:32,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:32,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:32,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:32,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:32,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:32,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:32,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:32,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:32,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:32,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:32,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:32,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:41:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:32,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:32,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:32,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:32,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:32,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:32,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:32,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:32,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:32,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:32,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:32,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:32,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:41:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:32,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:32,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:32,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:32,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:32,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:41:32,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:32,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:32,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:32,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:32,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:41:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:32,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:32,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:32,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:32,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:32,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:32,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:32,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:32,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:32,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:32,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:32,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-25 08:41:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:32,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:32,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:32,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:32,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:32,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:32,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:32,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:32,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:32,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:32,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-25 08:41:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:32,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:32,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:32,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:32,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:32,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:32,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:32,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:32,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:32,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:41:32,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-25 08:41:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:32,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:32,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:32,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:32,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:32,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:32,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:32,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:32,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:32,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:32,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:32,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:32,390 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 08:41:32,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1585885371] [2020-09-25 08:41:32,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:41:32,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 08:41:32,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183897175] [2020-09-25 08:41:32,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 08:41:32,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:41:32,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 08:41:32,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 08:41:32,396 INFO L87 Difference]: Start difference. First operand 239 states and 257 transitions. Second operand 4 states. [2020-09-25 08:41:33,059 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-25 08:41:33,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:41:33,912 INFO L93 Difference]: Finished difference Result 357 states and 398 transitions. [2020-09-25 08:41:33,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:41:33,913 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 08:41:33,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:41:33,917 INFO L225 Difference]: With dead ends: 357 [2020-09-25 08:41:33,917 INFO L226 Difference]: Without dead ends: 262 [2020-09-25 08:41:33,919 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 08:41:33,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-09-25 08:41:33,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 229. [2020-09-25 08:41:33,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-25 08:41:33,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 244 transitions. [2020-09-25 08:41:33,989 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 244 transitions. Word has length 154 [2020-09-25 08:41:33,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:41:33,992 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 244 transitions. [2020-09-25 08:41:33,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 08:41:33,992 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 244 transitions. [2020-09-25 08:41:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 08:41:33,994 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:33,995 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] [2020-09-25 08:41:33,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:41:33,995 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:33,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:33,995 INFO L82 PathProgramCache]: Analyzing trace with hash 304341534, now seen corresponding path program 1 times [2020-09-25 08:41:34,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:34,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027576295] [2020-09-25 08:41:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:34,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:34,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:37,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:37,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-25 08:41:37,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:41:37,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3255 [2020-09-25 08:41:37,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:37,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 146 [2020-09-25 08:41:37,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:41:37,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:37,582 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:41:37,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:41:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:37,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:37,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:37,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:41:37,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:37,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 08:41:37,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:37,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:37,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:37,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:41:37,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:37,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:37,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:37,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:37,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:37,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:37,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:37,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:37,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:37,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:37,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:41:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:37,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:37,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:37,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:37,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:37,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:37,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:37,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:37,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:37,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:37,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:41:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:37,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:37,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:37,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:37,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:37,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:41:37,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:37,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:37,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:37,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:37,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:41:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:37,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:37,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:37,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:37,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:37,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:41:37,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:37,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:37,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:37,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:37,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 08:41:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:37,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:37,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:37,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:41:37,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:37,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:37,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:37,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:37,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 08:41:37,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:37,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-25 08:41:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:37,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:37,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:37,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:37,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:37,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:37,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:37,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:37,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:37,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:37,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-25 08:41:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:37,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:37,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:37,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:37,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:37,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:37,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:37,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:37,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:37,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:37,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:37,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:37,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-09-25 08:41:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:37,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:37,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:37,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:37,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:37,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:37,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:37,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:37,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:37,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:37,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:37,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:37,829 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 08:41:37,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027576295] [2020-09-25 08:41:37,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:41:37,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:41:37,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079400510] [2020-09-25 08:41:37,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:41:37,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:41:37,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:41:37,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:41:37,832 INFO L87 Difference]: Start difference. First operand 229 states and 244 transitions. Second operand 5 states. [2020-09-25 08:41:38,427 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:41:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:41:39,219 INFO L93 Difference]: Finished difference Result 403 states and 460 transitions. [2020-09-25 08:41:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:41:39,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-25 08:41:39,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:41:39,222 INFO L225 Difference]: With dead ends: 403 [2020-09-25 08:41:39,223 INFO L226 Difference]: Without dead ends: 284 [2020-09-25 08:41:39,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:41:39,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-09-25 08:41:39,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 229. [2020-09-25 08:41:39,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-09-25 08:41:39,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 243 transitions. [2020-09-25 08:41:39,264 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 243 transitions. Word has length 167 [2020-09-25 08:41:39,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:41:39,264 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 243 transitions. [2020-09-25 08:41:39,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:41:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 243 transitions. [2020-09-25 08:41:39,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 08:41:39,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:39,267 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] [2020-09-25 08:41:39,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:41:39,267 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:39,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:39,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1214766301, now seen corresponding path program 1 times [2020-09-25 08:41:39,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:39,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [146294573] [2020-09-25 08:41:39,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:39,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:39,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-09-25 08:41:41,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1787 [2020-09-25 08:41:41,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:41:41,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-25 08:41:41,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 08:41:41,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,432 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-25 08:41:41,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:41:41,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:41:41,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 08:41:41,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:41,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 08:41:41,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 08:41:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:41,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:41,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:41,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-25 08:41:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:41,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:41,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:41,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-25 08:41:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:41,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:41:41,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:41,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:41:41,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-25 08:41:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:41,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:41:41,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 08:41:41,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-25 08:41:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 08:41:41,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:41:41,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 08:41:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-25 08:41:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 08:41:41,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:41:41,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:41,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:41:41,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:41:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:41:41,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:41:41,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:41,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-25 08:41:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:41,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:41:41,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 08:41:41,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:41:41,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-25 08:41:41,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:41,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 08:41:41,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:41:41,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:41:41,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:41:41,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-25 08:41:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:41:41,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:41:41,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:41:41,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:41:41,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:41:41,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:41:41,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:41:41,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:41:41,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:41:41,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 08:41:41,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:41:41,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:41:41,959 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 08:41:41,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [146294573] [2020-09-25 08:41:41,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:41:41,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 08:41:41,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239448332] [2020-09-25 08:41:41,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:41:41,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:41:41,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:41:41,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:41:41,963 INFO L87 Difference]: Start difference. First operand 229 states and 243 transitions. Second operand 10 states. [2020-09-25 08:41:42,460 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:41:44,136 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:41:44,501 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:41:44,894 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:41:45,300 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-25 08:41:45,607 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-25 08:41:45,978 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:41:46,298 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-25 08:41:47,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:41:47,422 INFO L93 Difference]: Finished difference Result 625 states and 767 transitions. [2020-09-25 08:41:47,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 08:41:47,425 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 175 [2020-09-25 08:41:47,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:41:47,430 INFO L225 Difference]: With dead ends: 625 [2020-09-25 08:41:47,430 INFO L226 Difference]: Without dead ends: 506 [2020-09-25 08:41:47,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2020-09-25 08:41:47,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-09-25 08:41:47,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 340. [2020-09-25 08:41:47,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2020-09-25 08:41:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 371 transitions. [2020-09-25 08:41:47,503 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 371 transitions. Word has length 175 [2020-09-25 08:41:47,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:41:47,504 INFO L479 AbstractCegarLoop]: Abstraction has 340 states and 371 transitions. [2020-09-25 08:41:47,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:41:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 371 transitions. [2020-09-25 08:41:47,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 08:41:47,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:41:47,508 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, 1, 1, 1] [2020-09-25 08:41:47,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:41:47,508 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:41:47,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:41:47,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1778118102, now seen corresponding path program 1 times [2020-09-25 08:41:47,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:41:47,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470886262] [2020-09-25 08:41:47,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:41:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:41:47,595 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:41:47,595 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:41:47,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:41:47,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:41:47 BoogieIcfgContainer [2020-09-25 08:41:47,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:41:47,632 INFO L168 Benchmark]: Toolchain (without parser) took 31315.62 ms. Allocated memory was 141.6 MB in the beginning and 614.5 MB in the end (delta: 472.9 MB). Free memory was 102.7 MB in the beginning and 561.4 MB in the end (delta: -458.7 MB). Peak memory consumption was 481.4 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:47,633 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 08:41:47,634 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.61 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 102.0 MB in the beginning and 175.9 MB in the end (delta: -73.9 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:47,635 INFO L168 Benchmark]: Boogie Preprocessor took 119.96 ms. Allocated memory is still 205.5 MB. Free memory was 175.9 MB in the beginning and 171.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:47,636 INFO L168 Benchmark]: RCFGBuilder took 1253.15 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 171.9 MB in the beginning and 177.2 MB in the end (delta: -5.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:47,637 INFO L168 Benchmark]: TraceAbstraction took 29183.26 ms. Allocated memory was 235.4 MB in the beginning and 614.5 MB in the end (delta: 379.1 MB). Free memory was 177.2 MB in the beginning and 561.4 MB in the end (delta: -384.2 MB). Peak memory consumption was 462.1 MB. Max. memory is 7.1 GB. [2020-09-25 08:41:47,641 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 750.61 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 102.0 MB in the beginning and 175.9 MB in the end (delta: -73.9 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.96 ms. Allocated memory is still 205.5 MB. Free memory was 175.9 MB in the beginning and 171.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1253.15 ms. Allocated memory was 205.5 MB in the beginning and 235.4 MB in the end (delta: 29.9 MB). Free memory was 171.9 MB in the beginning and 177.2 MB in the end (delta: -5.3 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29183.26 ms. Allocated memory was 235.4 MB in the beginning and 614.5 MB in the end (delta: 379.1 MB). Free memory was 177.2 MB in the beginning and 561.4 MB in the end (delta: -384.2 MB). Peak memory consumption was 462.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 910]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L149] int waterLevel = 1; [L150] int methaneLevelCritical = 0; [L407] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L608] int pumpRunning = 0; [L609] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L862] int retValue_acc ; [L865] retValue_acc = 1 [L866] 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() [L770] int splverifierCounter ; [L771] int tmp ; [L772] int tmp___0 ; [L773] int tmp___1 ; [L774] int tmp___2 ; [L777] splverifierCounter = 0 [L779] COND TRUE 1 [L781] COND TRUE splverifierCounter < 4 [L787] tmp = __VERIFIER_nondet_int() [L789] COND TRUE \read(tmp) [L791] CALL waterRise() [L167] COND TRUE waterLevel < 2 [L168] waterLevel = waterLevel + 1 [L791] RET waterRise() [L797] tmp___0 = __VERIFIER_nondet_int() [L799] COND FALSE !(\read(tmp___0)) [L807] tmp___2 = __VERIFIER_nondet_int() [L809] COND TRUE \read(tmp___2) [L811] CALL startSystem() [L764] systemActive = 1 [L811] RET startSystem() [L824] CALL timeShift() [L616] COND FALSE !(\read(pumpRunning)) [L623] COND TRUE \read(systemActive) [L625] CALL processEnvironment() [L645] int tmp ; [L648] COND FALSE !(\read(pumpRunning)) [L663] FCALL processEnvironment__wrappee__base() [L625] RET processEnvironment() [L631] CALL __utac_acc__Specification3_spec__1() [L873] int tmp ; [L874] int tmp___0 ; [L875] int tmp___1 ; [L879] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L879] RET, EXPR isMethaneLevelCritical() [L879] tmp = isMethaneLevelCritical() [L881] COND FALSE !(\read(tmp)) [L885] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L885] RET, EXPR getWaterLevel() [L885] tmp___0 = getWaterLevel() [L887] COND TRUE tmp___0 == 2 [L889] CALL, EXPR isPumpRunning() [L697] int retValue_acc ; [L700] retValue_acc = pumpRunning [L701] return (retValue_acc); [L889] RET, EXPR isPumpRunning() [L889] tmp___1 = isPumpRunning() [L891] COND FALSE !(\read(tmp___1)) [L895] CALL __automaton_fail() [L910] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 613 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.0s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 880 SDtfs, 1239 SDslu, 801 SDs, 0 SdLazy, 1912 SolverSat, 387 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=340occurred 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: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 294 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 17.9s InterpolantComputationTime, 829 NumberOfCodeBlocks, 829 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 645 ConstructedInterpolants, 0 QuantifiedInterpolants, 246908 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...