/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 --traceabstraction.use.minimal.unsat.core.enumeration 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_spec1_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:59:33,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:59:33,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:59:33,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:59:33,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:59:33,839 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:59:33,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:59:33,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:59:33,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:59:33,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:59:33,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:59:33,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:59:33,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:59:33,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:59:33,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:59:33,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:59:33,862 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:59:33,863 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:59:33,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:59:33,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:59:33,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:59:33,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:59:33,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:59:33,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:59:33,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:59:33,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:59:33,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:59:33,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:59:33,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:59:33,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:59:33,900 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:59:33,901 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:59:33,902 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:59:33,903 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:59:33,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:59:33,904 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:59:33,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:59:33,905 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:59:33,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:59:33,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:59:33,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:59:33,907 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 [2020-08-22 01:59:33,929 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:59:33,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:59:33,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:59:33,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:59:33,931 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:59:33,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:59:33,932 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:59:33,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:59:33,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:59:33,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:59:33,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:59:33,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:59:33,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:59:33,933 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:59:33,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:59:33,934 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:59:33,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:59:33,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:59:33,934 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:59:33,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:59:33,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:59:33,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:59:33,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:59:33,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:59:33,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:59:33,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:59:33,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:59:33,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:59:33,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:59:33,936 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> 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 -> 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 -> 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 -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 01:59:34,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:59:34,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:59:34,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:59:34,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:59:34,263 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:59:34,264 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-08-22 01:59:34,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a860caaa4/05d1a6309c7f4804a8ecf50b1bd08135/FLAG2bc307707 [2020-08-22 01:59:34,966 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:59:34,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-08-22 01:59:34,996 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a860caaa4/05d1a6309c7f4804a8ecf50b1bd08135/FLAG2bc307707 [2020-08-22 01:59:35,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a860caaa4/05d1a6309c7f4804a8ecf50b1bd08135 [2020-08-22 01:59:35,215 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:59:35,217 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:59:35,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:59:35,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:59:35,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:59:35,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:59:35" (1/1) ... [2020-08-22 01:59:35,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2109715f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:35, skipping insertion in model container [2020-08-22 01:59:35,227 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:59:35" (1/1) ... [2020-08-22 01:59:35,235 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:59:35,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:59:35,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:59:35,741 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:59:35,816 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:59:35,854 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:59:35,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:35 WrapperNode [2020-08-22 01:59:35,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:59:35,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:59:35,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:59:35,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:59:35,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:35" (1/1) ... [2020-08-22 01:59:35,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:35" (1/1) ... [2020-08-22 01:59:35,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:35" (1/1) ... [2020-08-22 01:59:35,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:35" (1/1) ... [2020-08-22 01:59:35,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:35" (1/1) ... [2020-08-22 01:59:35,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:35" (1/1) ... [2020-08-22 01:59:35,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:35" (1/1) ... [2020-08-22 01:59:36,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:59:36,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:59:36,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:59:36,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:59:36,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:35" (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 [2020-08-22 01:59:36,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:59:36,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:59:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:59:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:59:36,095 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:59:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:59:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:59:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:59:36,096 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:59:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:59:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:59:36,097 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 01:59:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:59:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:59:36,098 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:59:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:59:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:59:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:59:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:59:36,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:59:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:59:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:59:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 01:59:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:59:36,100 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:59:36,101 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:59:36,102 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:59:36,102 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:59:36,102 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:59:36,102 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:59:36,102 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:59:36,102 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:59:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:59:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:59:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:59:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:59:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:59:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:59:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:59:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:59:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:59:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:59:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:59:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:59:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:59:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:59:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:59:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:59:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:59:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:59:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:59:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 01:59:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 01:59:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:59:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:59:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:59:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:59:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:59:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:59:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:59:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:59:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:59:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:59:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:59:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:59:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:59:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:59:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:59:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:59:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:59:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:59:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:59:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:59:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:59:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:59:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:59:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:59:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:59:36,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:59:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:59:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:59:36,113 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:59:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:59:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:59:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:59:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:59:36,114 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:59:36,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:59:36,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:59:36,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:59:37,182 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:59:37,182 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:59:37,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:59:37 BoogieIcfgContainer [2020-08-22 01:59:37,188 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:59:37,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:59:37,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:59:37,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:59:37,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:59:35" (1/3) ... [2020-08-22 01:59:37,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174fecc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:59:37, skipping insertion in model container [2020-08-22 01:59:37,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:35" (2/3) ... [2020-08-22 01:59:37,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174fecc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:59:37, skipping insertion in model container [2020-08-22 01:59:37,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:59:37" (3/3) ... [2020-08-22 01:59:37,196 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product35.cil.c [2020-08-22 01:59:37,206 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:59:37,214 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:59:37,228 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:59:37,253 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:59:37,254 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:59:37,254 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:59:37,254 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:59:37,254 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:59:37,254 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:59:37,255 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:59:37,255 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:59:37,277 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-22 01:59:37,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 01:59:37,285 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:37,286 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] [2020-08-22 01:59:37,286 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:37,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:37,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1896668179, now seen corresponding path program 1 times [2020-08-22 01:59:37,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:37,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [568899036] [2020-08-22 01:59:37,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:37,913 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:37,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:37,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:37,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:37,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:38,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:38,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:59:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:38,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:59:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:38,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:59:38,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [568899036] [2020-08-22 01:59:38,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:38,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:59:38,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433021819] [2020-08-22 01:59:38,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:59:38,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:38,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:59:38,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:59:38,053 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-08-22 01:59:39,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:39,118 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2020-08-22 01:59:39,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:59:39,121 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 01:59:39,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:39,137 INFO L225 Difference]: With dead ends: 269 [2020-08-22 01:59:39,137 INFO L226 Difference]: Without dead ends: 146 [2020-08-22 01:59:39,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:59:39,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-22 01:59:39,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 114. [2020-08-22 01:59:39,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 01:59:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-22 01:59:39,236 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 46 [2020-08-22 01:59:39,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:39,236 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-22 01:59:39,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:59:39,237 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-22 01:59:39,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 01:59:39,240 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:39,240 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] [2020-08-22 01:59:39,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:59:39,241 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:39,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:39,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1220507007, now seen corresponding path program 1 times [2020-08-22 01:59:39,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:39,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121778082] [2020-08-22 01:59:39,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:39,663 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:39,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:39,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:39,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:39,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:39,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:39,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:59:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:39,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:59:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:39,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:59:39,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121778082] [2020-08-22 01:59:39,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:39,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:59:39,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366658397] [2020-08-22 01:59:39,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:59:39,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:39,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:59:39,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:59:39,707 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 4 states. [2020-08-22 01:59:40,144 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:40,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:40,811 INFO L93 Difference]: Finished difference Result 193 states and 235 transitions. [2020-08-22 01:59:40,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:59:40,812 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 01:59:40,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:40,817 INFO L225 Difference]: With dead ends: 193 [2020-08-22 01:59:40,818 INFO L226 Difference]: Without dead ends: 130 [2020-08-22 01:59:40,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:59:40,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-22 01:59:40,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2020-08-22 01:59:40,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-22 01:59:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-08-22 01:59:40,871 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 47 [2020-08-22 01:59:40,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:40,872 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-08-22 01:59:40,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:59:40,872 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-08-22 01:59:40,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 01:59:40,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:40,882 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] [2020-08-22 01:59:40,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:59:40,882 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:40,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:40,883 INFO L82 PathProgramCache]: Analyzing trace with hash -421022276, now seen corresponding path program 1 times [2020-08-22 01:59:40,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:40,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119175266] [2020-08-22 01:59:40,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:41,228 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:41,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:41,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:41,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:41,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:41,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:41,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:59:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:41,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:59:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:59:41,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119175266] [2020-08-22 01:59:41,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:41,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:59:41,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970805606] [2020-08-22 01:59:41,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:59:41,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:41,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:59:41,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:59:41,327 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 8 states. [2020-08-22 01:59:41,718 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:42,014 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:42,286 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:42,513 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:43,281 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:44,621 INFO L93 Difference]: Finished difference Result 363 states and 449 transitions. [2020-08-22 01:59:44,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:59:44,623 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 01:59:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:44,627 INFO L225 Difference]: With dead ends: 363 [2020-08-22 01:59:44,627 INFO L226 Difference]: Without dead ends: 282 [2020-08-22 01:59:44,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 01:59:44,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-22 01:59:44,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 216. [2020-08-22 01:59:44,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-22 01:59:44,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-08-22 01:59:44,694 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 51 [2020-08-22 01:59:44,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:44,695 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-08-22 01:59:44,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:59:44,695 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-08-22 01:59:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 01:59:44,696 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:44,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:59:44,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:59:44,700 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:44,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:44,700 INFO L82 PathProgramCache]: Analyzing trace with hash 498542477, now seen corresponding path program 1 times [2020-08-22 01:59:44,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:44,701 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560181916] [2020-08-22 01:59:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,029 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:45,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:45,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:45,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:59:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 01:59:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 01:59:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:59:45,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560181916] [2020-08-22 01:59:45,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:45,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:59:45,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504253499] [2020-08-22 01:59:45,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:59:45,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:45,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:59:45,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:59:45,124 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand 8 states. [2020-08-22 01:59:45,550 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:46,626 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:46,949 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:47,228 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:47,456 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:47,777 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:48,486 INFO L93 Difference]: Finished difference Result 698 states and 907 transitions. [2020-08-22 01:59:48,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:59:48,488 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 01:59:48,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:48,493 INFO L225 Difference]: With dead ends: 698 [2020-08-22 01:59:48,493 INFO L226 Difference]: Without dead ends: 506 [2020-08-22 01:59:48,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:59:48,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-22 01:59:48,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 387. [2020-08-22 01:59:48,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-22 01:59:48,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 466 transitions. [2020-08-22 01:59:48,607 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 466 transitions. Word has length 57 [2020-08-22 01:59:48,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:48,608 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 466 transitions. [2020-08-22 01:59:48,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:59:48,608 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 466 transitions. [2020-08-22 01:59:48,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 01:59:48,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:48,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:59:48,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:59:48,611 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:48,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:48,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1390027601, now seen corresponding path program 1 times [2020-08-22 01:59:48,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:48,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504721689] [2020-08-22 01:59:48,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,874 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:48,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:59:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 01:59:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 01:59:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 01:59:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:59:49,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504721689] [2020-08-22 01:59:49,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:49,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:59:49,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609349771] [2020-08-22 01:59:49,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:59:49,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:49,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:59:49,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:59:49,018 INFO L87 Difference]: Start difference. First operand 387 states and 466 transitions. Second operand 9 states. [2020-08-22 01:59:49,386 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:50,332 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:50,618 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:50,877 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:51,357 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:51,630 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:52,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:52,369 INFO L93 Difference]: Finished difference Result 1120 states and 1488 transitions. [2020-08-22 01:59:52,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 01:59:52,370 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-22 01:59:52,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:52,376 INFO L225 Difference]: With dead ends: 1120 [2020-08-22 01:59:52,376 INFO L226 Difference]: Without dead ends: 757 [2020-08-22 01:59:52,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:59:52,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2020-08-22 01:59:52,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 599. [2020-08-22 01:59:52,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 599 states. [2020-08-22 01:59:52,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 735 transitions. [2020-08-22 01:59:52,551 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 735 transitions. Word has length 61 [2020-08-22 01:59:52,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:52,552 INFO L479 AbstractCegarLoop]: Abstraction has 599 states and 735 transitions. [2020-08-22 01:59:52,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:59:52,552 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 735 transitions. [2020-08-22 01:59:52,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 01:59:52,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:52,555 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] [2020-08-22 01:59:52,555 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:59:52,555 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:52,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:52,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1223870708, now seen corresponding path program 1 times [2020-08-22 01:59:52,556 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:52,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [843094249] [2020-08-22 01:59:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,825 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:52,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:52,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:59:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:59:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:59:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:59:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:53,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:59:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:53,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:59:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:53,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 01:59:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:59:53,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [843094249] [2020-08-22 01:59:53,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:53,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:59:53,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151393740] [2020-08-22 01:59:53,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:59:53,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:53,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:59:53,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:59:53,044 INFO L87 Difference]: Start difference. First operand 599 states and 735 transitions. Second operand 9 states. [2020-08-22 01:59:53,875 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:54,774 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:55,051 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:59:55,352 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:55,620 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 01:59:57,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:57,232 INFO L93 Difference]: Finished difference Result 2076 states and 2949 transitions. [2020-08-22 01:59:57,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 01:59:57,233 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-22 01:59:57,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:57,247 INFO L225 Difference]: With dead ends: 2076 [2020-08-22 01:59:57,248 INFO L226 Difference]: Without dead ends: 1501 [2020-08-22 01:59:57,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:59:57,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2020-08-22 01:59:57,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 1127. [2020-08-22 01:59:57,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2020-08-22 01:59:57,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1380 transitions. [2020-08-22 01:59:57,504 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1380 transitions. Word has length 78 [2020-08-22 01:59:57,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:57,505 INFO L479 AbstractCegarLoop]: Abstraction has 1127 states and 1380 transitions. [2020-08-22 01:59:57,505 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:59:57,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1380 transitions. [2020-08-22 01:59:57,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 01:59:57,508 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:57,508 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] [2020-08-22 01:59:57,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:59:57,508 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:57,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:57,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1060992747, now seen corresponding path program 1 times [2020-08-22 01:59:57,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:57,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911923513] [2020-08-22 01:59:57,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:57,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:57,774 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:57,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:57,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:57,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:57,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:57,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:57,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:57,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:57,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:59:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:57,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:59:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:57,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:59:57,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:57,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:59:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:57,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:59:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:57,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:59:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:57,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 01:59:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:59:57,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911923513] [2020-08-22 01:59:57,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:57,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:59:57,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642879860] [2020-08-22 01:59:57,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:59:57,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:57,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:59:57,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:59:57,920 INFO L87 Difference]: Start difference. First operand 1127 states and 1380 transitions. Second operand 9 states. [2020-08-22 01:59:58,992 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:59,261 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:59:59,519 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:59,779 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:01,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:00:01,046 INFO L93 Difference]: Finished difference Result 2617 states and 3478 transitions. [2020-08-22 02:00:01,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:00:01,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-22 02:00:01,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:00:01,065 INFO L225 Difference]: With dead ends: 2617 [2020-08-22 02:00:01,074 INFO L226 Difference]: Without dead ends: 1514 [2020-08-22 02:00:01,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:00:01,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1514 states. [2020-08-22 02:00:01,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1514 to 1167. [2020-08-22 02:00:01,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1167 states. [2020-08-22 02:00:01,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1420 transitions. [2020-08-22 02:00:01,339 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1420 transitions. Word has length 78 [2020-08-22 02:00:01,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:00:01,340 INFO L479 AbstractCegarLoop]: Abstraction has 1167 states and 1420 transitions. [2020-08-22 02:00:01,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 02:00:01,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1420 transitions. [2020-08-22 02:00:01,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 02:00:01,344 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:00:01,344 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] [2020-08-22 02:00:01,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:00:01,346 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:00:01,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:00:01,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1570465837, now seen corresponding path program 1 times [2020-08-22 02:00:01,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:00:01,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1230695053] [2020-08-22 02:00:01,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:00:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:01,629 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:00:01,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:00:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:01,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:00:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:01,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:00:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:01,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:00:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:01,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:00:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:01,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 02:00:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:01,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:00:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:01,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:00:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:01,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:00:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:01,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:00:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:01,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 02:00:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:01,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 02:00:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:00:01,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:00:01,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1230695053] [2020-08-22 02:00:01,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:00:01,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 02:00:01,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517182325] [2020-08-22 02:00:01,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 02:00:01,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:00:01,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 02:00:01,761 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:00:01,761 INFO L87 Difference]: Start difference. First operand 1167 states and 1420 transitions. Second operand 11 states. [2020-08-22 02:00:02,834 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:03,067 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:03,297 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:03,914 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:04,181 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:04,445 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:00:05,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:00:05,552 INFO L93 Difference]: Finished difference Result 2323 states and 3044 transitions. [2020-08-22 02:00:05,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:00:05,554 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-08-22 02:00:05,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:00:05,563 INFO L225 Difference]: With dead ends: 2323 [2020-08-22 02:00:05,564 INFO L226 Difference]: Without dead ends: 1180 [2020-08-22 02:00:05,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:00:05,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2020-08-22 02:00:05,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 949. [2020-08-22 02:00:05,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 949 states. [2020-08-22 02:00:05,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1124 transitions. [2020-08-22 02:00:05,765 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1124 transitions. Word has length 78 [2020-08-22 02:00:05,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:00:05,766 INFO L479 AbstractCegarLoop]: Abstraction has 949 states and 1124 transitions. [2020-08-22 02:00:05,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 02:00:05,766 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1124 transitions. [2020-08-22 02:00:05,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-22 02:00:05,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:00:05,768 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] [2020-08-22 02:00:05,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:00:05,769 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:00:05,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:00:05,769 INFO L82 PathProgramCache]: Analyzing trace with hash -341045236, now seen corresponding path program 1 times [2020-08-22 02:00:05,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:00:05,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929102299] [2020-08-22 02:00:05,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:00:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:00:05,822 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:00:05,822 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:00:05,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:00:05,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:00:05 BoogieIcfgContainer [2020-08-22 02:00:05,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:00:05,853 INFO L168 Benchmark]: Toolchain (without parser) took 30635.90 ms. Allocated memory was 140.5 MB in the beginning and 633.9 MB in the end (delta: 493.4 MB). Free memory was 100.6 MB in the beginning and 269.2 MB in the end (delta: -168.6 MB). Peak memory consumption was 324.7 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:05,853 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:00:05,854 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.98 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.4 MB in the beginning and 173.6 MB in the end (delta: -73.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:05,855 INFO L168 Benchmark]: Boogie Preprocessor took 144.35 ms. Allocated memory is still 204.5 MB. Free memory was 173.6 MB in the beginning and 169.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:05,856 INFO L168 Benchmark]: RCFGBuilder took 1187.36 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 169.4 MB in the beginning and 200.3 MB in the end (delta: -30.9 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:05,857 INFO L168 Benchmark]: TraceAbstraction took 28661.47 ms. Allocated memory was 236.5 MB in the beginning and 633.9 MB in the end (delta: 397.4 MB). Free memory was 198.9 MB in the beginning and 269.2 MB in the end (delta: -70.4 MB). Peak memory consumption was 327.0 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:05,860 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.98 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.4 MB in the beginning and 173.6 MB in the end (delta: -73.2 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.35 ms. Allocated memory is still 204.5 MB. Free memory was 173.6 MB in the beginning and 169.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1187.36 ms. Allocated memory was 204.5 MB in the beginning and 236.5 MB in the end (delta: 32.0 MB). Free memory was 169.4 MB in the beginning and 200.3 MB in the end (delta: -30.9 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 28661.47 ms. Allocated memory was 236.5 MB in the beginning and 633.9 MB in the end (delta: 397.4 MB). Free memory was 198.9 MB in the beginning and 269.2 MB in the end (delta: -70.4 MB). Peak memory consumption was 327.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 145]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L250] int pumpRunning = 0; [L251] int systemActive = 1; [L455] int cleanupTimeShifts = 4; [L720] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L528] int retValue_acc ; [L529] int tmp ; [L533] FCALL select_helpers() [L534] FCALL select_features() [L535] CALL, EXPR valid_product() [L446] int retValue_acc ; [L449] retValue_acc = 1 [L450] return (retValue_acc); [L535] RET, EXPR valid_product() [L535] tmp = valid_product() [L537] COND TRUE \read(tmp) [L539] FCALL setup() [L540] CALL runTest() [L522] CALL test() [L181] int splverifierCounter ; [L182] int tmp ; [L183] int tmp___0 ; [L184] int tmp___1 ; [L185] int tmp___2 ; [L188] splverifierCounter = 0 [L190] COND TRUE 1 [L192] COND TRUE splverifierCounter < 4 [L198] tmp = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp) [L202] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L202] RET waterRise() [L208] tmp___0 = __VERIFIER_nondet_int() [L210] COND TRUE \read(tmp___0) [L212] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L212] RET changeMethaneLevel() [L218] tmp___2 = __VERIFIER_nondet_int() [L220] COND TRUE \read(tmp___2) [L235] CALL timeShift() [L257] COND FALSE !(\read(pumpRunning)) [L264] COND TRUE \read(systemActive) [L266] CALL processEnvironment() [L286] int tmp ; [L289] COND TRUE ! pumpRunning [L291] CALL, EXPR isHighWaterLevel() [L383] int retValue_acc ; [L384] int tmp ; [L385] int tmp___0 ; [L389] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L389] RET, EXPR isHighWaterSensorDry() [L389] tmp = isHighWaterSensorDry() [L391] COND FALSE !(\read(tmp)) [L394] tmp___0 = 1 [L396] retValue_acc = tmp___0 [L397] return (retValue_acc); [L291] RET, EXPR isHighWaterLevel() [L291] tmp = isHighWaterLevel() [L293] COND TRUE \read(tmp) [L295] CALL activatePump() [L314] pumpRunning = 1 [L295] RET activatePump() [L266] RET processEnvironment() [L272] CALL __utac_acc__Specification1_spec__1() [L152] int tmp ; [L153] int tmp___0 ; [L157] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L157] RET, EXPR isMethaneLevelCritical() [L157] tmp = isMethaneLevelCritical() [L159] COND TRUE \read(tmp) [L161] CALL, EXPR isPumpRunning() [L338] int retValue_acc ; [L341] retValue_acc = pumpRunning [L342] return (retValue_acc); [L161] RET, EXPR isPumpRunning() [L161] tmp___0 = isPumpRunning() [L163] COND TRUE \read(tmp___0) [L165] CALL __automaton_fail() [L145] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 28.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 23.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 796 SDtfs, 1497 SDslu, 1034 SDs, 0 SdLazy, 4660 SolverSat, 936 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 260 GetRequests, 170 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1167occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 1352 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 578 NumberOfCodeBlocks, 578 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 488 ConstructedInterpolants, 0 QuantifiedInterpolants, 143632 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...