/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:32:28,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:32:28,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:32:28,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:32:28,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:32:28,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:32:28,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:32:28,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:32:28,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:32:28,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:32:28,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:32:28,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:32:28,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:32:28,935 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:32:28,938 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:32:28,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:32:28,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:32:28,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:32:28,945 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:32:28,952 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:32:28,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:32:28,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:32:28,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:32:28,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:32:28,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:32:28,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:32:28,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:32:28,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:32:28,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:32:28,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:32:28,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:32:28,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:32:28,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:32:28,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:32:28,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:32:28,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:32:28,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:32:28,976 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:32:28,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:32:28,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:32:28,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:32:28,980 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 [2020-08-19 02:32:29,018 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:32:29,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:32:29,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:32:29,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:32:29,021 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:32:29,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:32:29,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:32:29,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:32:29,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:32:29,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:32:29,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:32:29,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:32:29,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:32:29,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:32:29,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:32:29,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:32:29,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:32:29,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:32:29,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:32:29,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:32:29,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:32:29,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:32:29,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:32:29,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:32:29,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:32:29,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:32:29,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:32:29,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:32:29,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:32:29,028 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=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:32:29,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:32:29,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:32:29,327 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:32:29,329 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:32:29,329 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:32:29,330 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-08-19 02:32:29,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/218b49556/b1aa32deb48f4687888a5e53b8ba3411/FLAGb4c47ea50 [2020-08-19 02:32:29,931 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:32:29,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product54.cil.c [2020-08-19 02:32:29,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/218b49556/b1aa32deb48f4687888a5e53b8ba3411/FLAGb4c47ea50 [2020-08-19 02:32:30,219 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/218b49556/b1aa32deb48f4687888a5e53b8ba3411 [2020-08-19 02:32:30,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:32:30,228 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:32:30,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:32:30,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:32:30,234 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:32:30,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:32:30" (1/1) ... [2020-08-19 02:32:30,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71155234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:30, skipping insertion in model container [2020-08-19 02:32:30,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:32:30" (1/1) ... [2020-08-19 02:32:30,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:32:30,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:32:30,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:32:30,657 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:32:30,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:32:30,934 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:32:30,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:30 WrapperNode [2020-08-19 02:32:30,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:32:30,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:32:30,936 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:32:30,936 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:32:30,947 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:30" (1/1) ... [2020-08-19 02:32:30,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:30" (1/1) ... [2020-08-19 02:32:30,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:30" (1/1) ... [2020-08-19 02:32:30,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:30" (1/1) ... [2020-08-19 02:32:31,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:30" (1/1) ... [2020-08-19 02:32:31,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:30" (1/1) ... [2020-08-19 02:32:31,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:30" (1/1) ... [2020-08-19 02:32:31,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:32:31,029 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:32:31,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:32:31,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:32:31,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:30" (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 [2020-08-19 02:32:31,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:32:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:32:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:32:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:32:31,108 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:32:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:32:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:32:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:32:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:32:31,109 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:32:31,110 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:32:31,110 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:32:31,110 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:32:31,110 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 02:32:31,110 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:32:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:32:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:32:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:32:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:32:31,111 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:32:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:32:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 02:32:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 02:32:31,112 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:32:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:32:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:32:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:32:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 02:32:31,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:32:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:32:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:32:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:32:31,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:32:31,115 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:32:31,115 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:32:31,115 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:32:31,115 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:32:31,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:32:31,116 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:32:31,116 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:32:31,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:32:31,116 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 02:32:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:32:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:32:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:32:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:32:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:32:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:32:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:32:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:32:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:32:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:32:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:32:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:32:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:32:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:32:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:32:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:32:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 02:32:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:32:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:32:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:32:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:32:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:32:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 02:32:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:32:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:32:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:32:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 02:32:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:32:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:32:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:32:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:32:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 02:32:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 02:32:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:32:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:32:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:32:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:32:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:32:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:32:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:32:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:32:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:32:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:32:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:32:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:32:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:32:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:32:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:32:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:32:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:32:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:32:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:32:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:32:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:32:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:32:31,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:32:32,304 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:32:32,305 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:32:32,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:32:32 BoogieIcfgContainer [2020-08-19 02:32:32,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:32:32,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:32:32,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:32:32,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:32:32,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:32:30" (1/3) ... [2020-08-19 02:32:32,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f570da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:32:32, skipping insertion in model container [2020-08-19 02:32:32,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:32:30" (2/3) ... [2020-08-19 02:32:32,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54f570da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:32:32, skipping insertion in model container [2020-08-19 02:32:32,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:32:32" (3/3) ... [2020-08-19 02:32:32,319 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product54.cil.c [2020-08-19 02:32:32,330 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:32:32,338 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:32:32,352 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:32:32,385 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:32:32,385 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:32:32,385 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:32:32,386 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:32:32,386 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:32:32,387 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:32:32,387 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:32:32,387 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:32:32,412 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-19 02:32:32,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 02:32:32,423 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:32,425 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] [2020-08-19 02:32:32,425 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:32,432 INFO L82 PathProgramCache]: Analyzing trace with hash -645790062, now seen corresponding path program 1 times [2020-08-19 02:32:32,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:32,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917252616] [2020-08-19 02:32:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:32,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:33,083 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:33,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:33,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:33,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:33,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:33,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:33,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:32:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:33,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:32:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:33,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:33,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917252616] [2020-08-19 02:32:33,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:33,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:32:33,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205348212] [2020-08-19 02:32:33,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:32:33,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:33,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:32:33,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:32:33,222 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-08-19 02:32:34,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:34,497 INFO L93 Difference]: Finished difference Result 338 states and 441 transitions. [2020-08-19 02:32:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:32:34,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 02:32:34,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:34,515 INFO L225 Difference]: With dead ends: 338 [2020-08-19 02:32:34,515 INFO L226 Difference]: Without dead ends: 182 [2020-08-19 02:32:34,520 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 [2020-08-19 02:32:34,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-19 02:32:34,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-08-19 02:32:34,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-19 02:32:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 174 transitions. [2020-08-19 02:32:34,622 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 174 transitions. Word has length 46 [2020-08-19 02:32:34,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:34,623 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 174 transitions. [2020-08-19 02:32:34,623 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:32:34,623 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 174 transitions. [2020-08-19 02:32:34,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 02:32:34,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:34,627 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] [2020-08-19 02:32:34,628 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:32:34,628 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:34,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:34,628 INFO L82 PathProgramCache]: Analyzing trace with hash -1894049218, now seen corresponding path program 1 times [2020-08-19 02:32:34,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:34,629 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [846115852] [2020-08-19 02:32:34,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:34,962 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:34,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:34,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:34,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:34,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:34,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:34,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:35,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:32:35,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:35,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:32:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:35,015 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [846115852] [2020-08-19 02:32:35,015 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:35,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:32:35,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15355685] [2020-08-19 02:32:35,018 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:32:35,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:35,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:32:35,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:32:35,019 INFO L87 Difference]: Start difference. First operand 147 states and 174 transitions. Second operand 4 states. [2020-08-19 02:32:35,442 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:36,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:36,524 INFO L93 Difference]: Finished difference Result 267 states and 328 transitions. [2020-08-19 02:32:36,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:32:36,524 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 02:32:36,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:36,527 INFO L225 Difference]: With dead ends: 267 [2020-08-19 02:32:36,527 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 02:32:36,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:32:36,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 02:32:36,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-19 02:32:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-19 02:32:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-19 02:32:36,573 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 47 [2020-08-19 02:32:36,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:36,574 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-19 02:32:36,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:32:36,574 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-19 02:32:36,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 02:32:36,576 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:36,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:36,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:32:36,577 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:36,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:36,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1275657422, now seen corresponding path program 1 times [2020-08-19 02:32:36,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:36,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918492715] [2020-08-19 02:32:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:36,898 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:36,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:36,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:36,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:36,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:37,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:37,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:32:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:37,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:32:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:37,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918492715] [2020-08-19 02:32:37,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:37,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:32:37,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545249300] [2020-08-19 02:32:37,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:32:37,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:37,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:32:37,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:32:37,051 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 8 states. [2020-08-19 02:32:37,417 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:37,770 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:38,026 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:38,265 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:39,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:39,678 INFO L93 Difference]: Finished difference Result 280 states and 346 transitions. [2020-08-19 02:32:39,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:32:39,683 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 02:32:39,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:39,687 INFO L225 Difference]: With dead ends: 280 [2020-08-19 02:32:39,688 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 02:32:39,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:32:39,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 02:32:39,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-19 02:32:39,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-19 02:32:39,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 161 transitions. [2020-08-19 02:32:39,734 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 161 transitions. Word has length 52 [2020-08-19 02:32:39,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:39,735 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 161 transitions. [2020-08-19 02:32:39,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:32:39,735 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 161 transitions. [2020-08-19 02:32:39,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-19 02:32:39,738 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:39,738 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] [2020-08-19 02:32:39,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:32:39,739 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:39,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:39,739 INFO L82 PathProgramCache]: Analyzing trace with hash 120986168, now seen corresponding path program 1 times [2020-08-19 02:32:39,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:39,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753707674] [2020-08-19 02:32:39,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:40,063 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:40,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:40,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:40,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:40,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:40,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:40,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:32:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:40,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:40,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:40,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:40,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 02:32:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:40,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 02:32:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:40,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:40,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753707674] [2020-08-19 02:32:40,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:40,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:32:40,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902431367] [2020-08-19 02:32:40,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:32:40,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:40,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:32:40,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:32:40,180 INFO L87 Difference]: Start difference. First operand 138 states and 161 transitions. Second operand 6 states. [2020-08-19 02:32:40,537 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:41,756 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:42,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:42,612 INFO L93 Difference]: Finished difference Result 383 states and 475 transitions. [2020-08-19 02:32:42,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:32:42,612 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-19 02:32:42,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:42,617 INFO L225 Difference]: With dead ends: 383 [2020-08-19 02:32:42,618 INFO L226 Difference]: Without dead ends: 269 [2020-08-19 02:32:42,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:32:42,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-08-19 02:32:42,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 226. [2020-08-19 02:32:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-08-19 02:32:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 256 transitions. [2020-08-19 02:32:42,668 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 256 transitions. Word has length 70 [2020-08-19 02:32:42,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:42,669 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 256 transitions. [2020-08-19 02:32:42,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:32:42,669 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 256 transitions. [2020-08-19 02:32:42,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 02:32:42,672 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:42,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:42,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:32:42,673 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:42,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:42,673 INFO L82 PathProgramCache]: Analyzing trace with hash 89608959, now seen corresponding path program 1 times [2020-08-19 02:32:42,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:42,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308458098] [2020-08-19 02:32:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:42,984 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:42,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:32:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:43,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 02:32:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 02:32:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:43,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308458098] [2020-08-19 02:32:43,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:43,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 02:32:43,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647019365] [2020-08-19 02:32:43,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:32:43,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:43,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:32:43,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:32:43,131 INFO L87 Difference]: Start difference. First operand 226 states and 256 transitions. Second operand 10 states. [2020-08-19 02:32:43,675 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:43,920 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:44,174 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:44,823 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:45,081 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:45,337 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:46,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:46,496 INFO L93 Difference]: Finished difference Result 472 states and 571 transitions. [2020-08-19 02:32:46,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:32:46,498 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-19 02:32:46,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:46,502 INFO L225 Difference]: With dead ends: 472 [2020-08-19 02:32:46,502 INFO L226 Difference]: Without dead ends: 270 [2020-08-19 02:32:46,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:32:46,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-08-19 02:32:46,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 230. [2020-08-19 02:32:46,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-08-19 02:32:46,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 260 transitions. [2020-08-19 02:32:46,562 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 260 transitions. Word has length 84 [2020-08-19 02:32:46,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:46,563 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 260 transitions. [2020-08-19 02:32:46,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:32:46,563 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 260 transitions. [2020-08-19 02:32:46,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 02:32:46,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:46,565 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:46,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:32:46,565 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:46,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:46,565 INFO L82 PathProgramCache]: Analyzing trace with hash -611990915, now seen corresponding path program 1 times [2020-08-19 02:32:46,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:46,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577016856] [2020-08-19 02:32:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:46,838 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:46,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:46,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:46,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:46,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:46,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:46,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:32:46,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:46,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:46,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:46,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:46,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:46,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:46,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:46,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:46,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:46,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 02:32:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:46,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 02:32:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:46,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577016856] [2020-08-19 02:32:46,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:46,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:32:46,954 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609831445] [2020-08-19 02:32:46,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:32:46,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:46,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:32:46,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:32:46,958 INFO L87 Difference]: Start difference. First operand 230 states and 260 transitions. Second operand 8 states. [2020-08-19 02:32:47,332 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:48,512 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:48,776 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:49,025 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:49,236 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:49,515 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:50,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:50,768 INFO L93 Difference]: Finished difference Result 688 states and 836 transitions. [2020-08-19 02:32:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:32:50,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-19 02:32:50,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:50,774 INFO L225 Difference]: With dead ends: 688 [2020-08-19 02:32:50,774 INFO L226 Difference]: Without dead ends: 482 [2020-08-19 02:32:50,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:32:50,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2020-08-19 02:32:50,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 415. [2020-08-19 02:32:50,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-19 02:32:50,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 470 transitions. [2020-08-19 02:32:50,855 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 470 transitions. Word has length 84 [2020-08-19 02:32:50,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:50,855 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 470 transitions. [2020-08-19 02:32:50,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:32:50,855 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 470 transitions. [2020-08-19 02:32:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 02:32:50,857 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:50,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:50,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:32:50,858 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:50,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:50,858 INFO L82 PathProgramCache]: Analyzing trace with hash 885407033, now seen corresponding path program 1 times [2020-08-19 02:32:50,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:50,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1116685921] [2020-08-19 02:32:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,178 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:51,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:51,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:51,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:32:51,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:32:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:51,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:51,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:51,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:51,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 02:32:51,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 02:32:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:51,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:51,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1116685921] [2020-08-19 02:32:51,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:51,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:32:51,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106477664] [2020-08-19 02:32:51,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:32:51,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:51,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:32:51,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:32:51,316 INFO L87 Difference]: Start difference. First operand 415 states and 470 transitions. Second operand 9 states. [2020-08-19 02:32:51,667 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:52,760 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:52,986 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:53,249 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:53,501 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:53,750 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:54,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:54,677 INFO L93 Difference]: Finished difference Result 524 states and 650 transitions. [2020-08-19 02:32:54,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:32:54,678 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-19 02:32:54,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:54,682 INFO L225 Difference]: With dead ends: 524 [2020-08-19 02:32:54,683 INFO L226 Difference]: Without dead ends: 521 [2020-08-19 02:32:54,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:32:54,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2020-08-19 02:32:54,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 415. [2020-08-19 02:32:54,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415 states. [2020-08-19 02:32:54,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 469 transitions. [2020-08-19 02:32:54,763 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 469 transitions. Word has length 88 [2020-08-19 02:32:54,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:54,764 INFO L479 AbstractCegarLoop]: Abstraction has 415 states and 469 transitions. [2020-08-19 02:32:54,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:32:54,764 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 469 transitions. [2020-08-19 02:32:54,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 02:32:54,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:54,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:54,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:32:54,767 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:54,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:54,767 INFO L82 PathProgramCache]: Analyzing trace with hash -856284930, now seen corresponding path program 1 times [2020-08-19 02:32:54,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:54,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600906042] [2020-08-19 02:32:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,006 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:55,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:55,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:32:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:32:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 02:32:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 02:32:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:55,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:55,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600906042] [2020-08-19 02:32:55,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:55,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:32:55,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714337476] [2020-08-19 02:32:55,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:32:55,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:55,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:32:55,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:32:55,173 INFO L87 Difference]: Start difference. First operand 415 states and 469 transitions. Second operand 9 states. [2020-08-19 02:32:56,098 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:56,329 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:32:56,561 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:56,786 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:57,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:57,975 INFO L93 Difference]: Finished difference Result 916 states and 1112 transitions. [2020-08-19 02:32:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:32:57,976 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-19 02:32:57,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:57,980 INFO L225 Difference]: With dead ends: 916 [2020-08-19 02:32:57,980 INFO L226 Difference]: Without dead ends: 525 [2020-08-19 02:32:57,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:32:57,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2020-08-19 02:32:58,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 425. [2020-08-19 02:32:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-08-19 02:32:58,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 479 transitions. [2020-08-19 02:32:58,077 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 479 transitions. Word has length 89 [2020-08-19 02:32:58,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:58,077 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 479 transitions. [2020-08-19 02:32:58,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:32:58,078 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 479 transitions. [2020-08-19 02:32:58,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 02:32:58,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:58,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:58,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:32:58,080 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:58,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:58,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1368774939, now seen corresponding path program 1 times [2020-08-19 02:32:58,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:58,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078669389] [2020-08-19 02:32:58,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,337 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:58,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:58,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:58,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:32:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:32:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 02:32:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 02:32:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:58,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:32:58,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078669389] [2020-08-19 02:32:58,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:58,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 02:32:58,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799253480] [2020-08-19 02:32:58,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:32:58,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:58,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:32:58,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:32:58,483 INFO L87 Difference]: Start difference. First operand 425 states and 479 transitions. Second operand 7 states. [2020-08-19 02:32:58,869 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:59,324 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:33:01,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:33:01,801 INFO L93 Difference]: Finished difference Result 1286 states and 1638 transitions. [2020-08-19 02:33:01,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:33:01,801 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-08-19 02:33:01,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:33:01,810 INFO L225 Difference]: With dead ends: 1286 [2020-08-19 02:33:01,810 INFO L226 Difference]: Without dead ends: 885 [2020-08-19 02:33:01,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:33:01,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-19 02:33:01,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 765. [2020-08-19 02:33:01,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 765 states. [2020-08-19 02:33:01,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 897 transitions. [2020-08-19 02:33:01,968 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 897 transitions. Word has length 89 [2020-08-19 02:33:01,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:33:01,970 INFO L479 AbstractCegarLoop]: Abstraction has 765 states and 897 transitions. [2020-08-19 02:33:01,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:33:01,970 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 897 transitions. [2020-08-19 02:33:01,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 02:33:01,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:33:01,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:33:01,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:33:01,974 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:33:01,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:33:01,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1535755999, now seen corresponding path program 1 times [2020-08-19 02:33:01,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:33:01,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464172237] [2020-08-19 02:33:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:33:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:33:02,035 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:33:02,036 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:33:02,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:33:02,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:33:02 BoogieIcfgContainer [2020-08-19 02:33:02,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:33:02,081 INFO L168 Benchmark]: Toolchain (without parser) took 31850.29 ms. Allocated memory was 138.9 MB in the beginning and 609.2 MB in the end (delta: 470.3 MB). Free memory was 100.5 MB in the beginning and 418.5 MB in the end (delta: -318.0 MB). Peak memory consumption was 152.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:33:02,082 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-19 02:33:02,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.92 ms. Allocated memory was 138.9 MB in the beginning and 205.0 MB in the end (delta: 66.1 MB). Free memory was 100.1 MB in the beginning and 173.9 MB in the end (delta: -73.9 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:33:02,091 INFO L168 Benchmark]: Boogie Preprocessor took 92.74 ms. Allocated memory is still 205.0 MB. Free memory was 173.9 MB in the beginning and 169.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 02:33:02,092 INFO L168 Benchmark]: RCFGBuilder took 1281.44 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 169.9 MB in the beginning and 198.6 MB in the end (delta: -28.7 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. [2020-08-19 02:33:02,093 INFO L168 Benchmark]: TraceAbstraction took 29765.06 ms. Allocated memory was 237.0 MB in the beginning and 609.2 MB in the end (delta: 372.2 MB). Free memory was 198.6 MB in the beginning and 418.5 MB in the end (delta: -219.9 MB). Peak memory consumption was 152.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:33:02,102 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 119.2 MB in the beginning and 118.8 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 704.92 ms. Allocated memory was 138.9 MB in the beginning and 205.0 MB in the end (delta: 66.1 MB). Free memory was 100.1 MB in the beginning and 173.9 MB in the end (delta: -73.9 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.74 ms. Allocated memory is still 205.0 MB. Free memory was 173.9 MB in the beginning and 169.9 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1281.44 ms. Allocated memory was 205.0 MB in the beginning and 237.0 MB in the end (delta: 32.0 MB). Free memory was 169.9 MB in the beginning and 198.6 MB in the end (delta: -28.7 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29765.06 ms. Allocated memory was 237.0 MB in the beginning and 609.2 MB in the end (delta: 372.2 MB). Free memory was 198.6 MB in the beginning and 418.5 MB in the end (delta: -219.9 MB). Peak memory consumption was 152.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 216]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L229] int pumpRunning = 0; [L230] int systemActive = 1; [L691] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L889] int waterLevel = 1; [L890] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L487] int retValue_acc ; [L490] retValue_acc = 1 [L491] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L146] int splverifierCounter ; [L147] int tmp ; [L148] int tmp___0 ; [L149] int tmp___1 ; [L150] int tmp___2 ; [L153] splverifierCounter = 0 [L155] COND TRUE 1 [L157] COND TRUE splverifierCounter < 4 [L163] tmp = __VERIFIER_nondet_int() [L165] COND TRUE \read(tmp) [L167] CALL waterRise() [L907] COND TRUE waterLevel < 2 [L908] waterLevel = waterLevel + 1 [L167] RET waterRise() [L173] tmp___0 = __VERIFIER_nondet_int() [L175] COND TRUE \read(tmp___0) [L177] CALL changeMethaneLevel() [L919] COND FALSE !(\read(methaneLevelCritical)) [L922] methaneLevelCritical = 1 [L177] RET changeMethaneLevel() [L183] tmp___2 = __VERIFIER_nondet_int() [L185] COND FALSE !(\read(tmp___2)) [L191] tmp___1 = __VERIFIER_nondet_int() [L193] COND TRUE \read(tmp___1) [L200] CALL timeShift() [L237] COND FALSE !(\read(pumpRunning)) [L244] COND TRUE \read(systemActive) [L246] CALL processEnvironment() [L318] int tmp ; [L321] COND FALSE !(\read(pumpRunning)) [L336] CALL processEnvironment__wrappee__lowWaterSensor() [L292] int tmp ; [L295] COND FALSE !(\read(pumpRunning)) [L310] CALL processEnvironment__wrappee__highWaterSensor() [L266] int tmp ; [L269] COND TRUE ! pumpRunning [L271] CALL, EXPR isHighWaterLevel() [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; [L421] CALL, EXPR isHighWaterSensorDry() [L969] int retValue_acc ; [L972] COND FALSE !(waterLevel < 2) [L976] retValue_acc = 0 [L977] return (retValue_acc); [L421] RET, EXPR isHighWaterSensorDry() [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); [L271] RET, EXPR isHighWaterLevel() [L271] tmp = isHighWaterLevel() [L273] COND TRUE \read(tmp) [L275] CALL activatePump() [L346] pumpRunning = 1 [L275] RET activatePump() [L310] RET processEnvironment__wrappee__highWaterSensor() [L336] RET processEnvironment__wrappee__lowWaterSensor() [L246] RET processEnvironment() [L252] CALL __utac_acc__Specification1_spec__1() [L497] int tmp ; [L498] int tmp___0 ; [L502] CALL, EXPR isMethaneLevelCritical() [L928] int retValue_acc ; [L931] retValue_acc = methaneLevelCritical [L932] return (retValue_acc); [L502] RET, EXPR isMethaneLevelCritical() [L502] tmp = isMethaneLevelCritical() [L504] COND TRUE \read(tmp) [L506] CALL, EXPR isPumpRunning() [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); [L506] RET, EXPR isPumpRunning() [L506] tmp___0 = isPumpRunning() [L508] COND TRUE \read(tmp___0) [L510] CALL __automaton_fail() [L216] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 249 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.6s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 24.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1214 SDtfs, 2058 SDslu, 1098 SDs, 0 SdLazy, 5498 SolverSat, 1363 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 237 SyntacticMatches, 5 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 9.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=765occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 567 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 742 NumberOfCodeBlocks, 742 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 640 ConstructedInterpolants, 0 QuantifiedInterpolants, 202853 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...