/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=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:43:28,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:43:28,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:43:28,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:43:28,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:43:28,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:43:28,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:43:28,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:43:28,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:43:28,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:43:28,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:43:28,969 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:43:28,969 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:43:28,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:43:28,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:43:28,972 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:43:28,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:43:28,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:43:28,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:43:28,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:43:28,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:43:28,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:43:28,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:43:28,980 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:43:28,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:43:28,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:43:28,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:43:28,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:43:28,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:43:28,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:43:28,985 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:43:28,986 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:43:28,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:43:28,987 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:43:28,988 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:43:28,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:43:28,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:43:28,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:43:28,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:43:28,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:43:28,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:43:28,992 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 01:43:29,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:43:29,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:43:29,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:43:29,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:43:29,015 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:43:29,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:43:29,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:43:29,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:43:29,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:43:29,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:43:29,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:43:29,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:43:29,017 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:43:29,017 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:43:29,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:43:29,017 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:43:29,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:43:29,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:43:29,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:43:29,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:43:29,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:43:29,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:43:29,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:43:29,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:43:29,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:43:29,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:43:29,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:43:29,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:43:29,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:43:29,020 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=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:43:29,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:43:29,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:43:29,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:43:29,323 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:43:29,323 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:43:29,324 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-08-19 01:43:29,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea5b3d3c6/dd5e6c2726b647d5b2d493f0e7f98a34/FLAG93d8c5457 [2020-08-19 01:43:30,041 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:43:30,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product40.cil.c [2020-08-19 01:43:30,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea5b3d3c6/dd5e6c2726b647d5b2d493f0e7f98a34/FLAG93d8c5457 [2020-08-19 01:43:30,268 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea5b3d3c6/dd5e6c2726b647d5b2d493f0e7f98a34 [2020-08-19 01:43:30,279 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:43:30,281 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:43:30,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:43:30,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:43:30,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:43:30,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:43:30" (1/1) ... [2020-08-19 01:43:30,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b4ad157 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:30, skipping insertion in model container [2020-08-19 01:43:30,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:43:30" (1/1) ... [2020-08-19 01:43:30,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:43:30,350 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:43:30,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:43:30,822 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:43:30,946 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:43:30,988 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:43:30,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:30 WrapperNode [2020-08-19 01:43:30,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:43:30,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:43:30,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:43:30,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:43:31,001 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:30" (1/1) ... [2020-08-19 01:43:31,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:30" (1/1) ... [2020-08-19 01:43:31,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:30" (1/1) ... [2020-08-19 01:43:31,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:30" (1/1) ... [2020-08-19 01:43:31,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:30" (1/1) ... [2020-08-19 01:43:31,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:30" (1/1) ... [2020-08-19 01:43:31,074 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:30" (1/1) ... [2020-08-19 01:43:31,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:43:31,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:43:31,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:43:31,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:43:31,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:30" (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 01:43:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:43:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:43:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:43:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:43:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:43:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:43:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:43:31,143 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:43:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:43:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:43:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:43:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:43:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:43:31,144 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 01:43:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 01:43:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:43:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 01:43:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:43:31,145 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:43:31,146 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:43:31,146 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:43:31,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:43:31,146 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:43:31,146 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:43:31,146 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:43:31,147 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:43:31,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:43:31,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:43:31,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:43:31,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:43:31,147 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:43:31,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:43:31,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:43:31,148 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:43:31,148 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:43:31,148 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:43:31,148 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:43:31,149 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:43:31,149 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:43:31,149 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:43:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:43:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:43:31,149 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:43:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:43:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:43:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:43:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:43:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:43:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:43:31,150 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:43:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:43:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:43:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 01:43:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 01:43:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 01:43:31,151 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:43:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:43:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:43:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 01:43:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:43:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:43:31,152 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:43:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:43:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:43:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:43:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:43:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:43:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:43:31,153 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:43:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:43:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:43:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:43:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:43:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:43:31,154 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:43:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:43:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:43:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:43:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:43:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:43:31,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:43:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:43:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:43:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:43:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:43:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:43:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:43:31,156 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:43:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:43:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:43:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:43:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:43:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:43:31,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:43:32,215 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:43:32,215 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:43:32,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:43:32 BoogieIcfgContainer [2020-08-19 01:43:32,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:43:32,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:43:32,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:43:32,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:43:32,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:43:30" (1/3) ... [2020-08-19 01:43:32,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbb1b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:43:32, skipping insertion in model container [2020-08-19 01:43:32,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:43:30" (2/3) ... [2020-08-19 01:43:32,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dbb1b7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:43:32, skipping insertion in model container [2020-08-19 01:43:32,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:43:32" (3/3) ... [2020-08-19 01:43:32,237 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product40.cil.c [2020-08-19 01:43:32,248 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:43:32,258 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:43:32,272 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:43:32,296 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:43:32,297 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:43:32,297 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:43:32,297 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:43:32,297 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:43:32,297 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:43:32,297 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:43:32,298 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:43:32,318 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-19 01:43:32,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 01:43:32,328 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:43:32,329 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 01:43:32,330 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:43:32,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:43:32,336 INFO L82 PathProgramCache]: Analyzing trace with hash -963613915, now seen corresponding path program 1 times [2020-08-19 01:43:32,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:43:32,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1679448148] [2020-08-19 01:43:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:43:32,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:33,003 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:43:33,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:43:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:33,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:43:33,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:33,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:43:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:33,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:43:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:33,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:43:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:33,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:43:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:33,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:43:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:33,114 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 01:43:33,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1679448148] [2020-08-19 01:43:33,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:43:33,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:43:33,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522433761] [2020-08-19 01:43:33,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:43:33,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:43:33,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:43:33,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:43:33,144 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-19 01:43:34,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:43:34,422 INFO L93 Difference]: Finished difference Result 310 states and 407 transitions. [2020-08-19 01:43:34,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:43:34,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 01:43:34,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:43:34,452 INFO L225 Difference]: With dead ends: 310 [2020-08-19 01:43:34,453 INFO L226 Difference]: Without dead ends: 168 [2020-08-19 01:43:34,459 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 01:43:34,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-19 01:43:34,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 133. [2020-08-19 01:43:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-19 01:43:34,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2020-08-19 01:43:34,569 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 46 [2020-08-19 01:43:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:43:34,570 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2020-08-19 01:43:34,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:43:34,570 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2020-08-19 01:43:34,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 01:43:34,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:43:34,574 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 01:43:34,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:43:34,575 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:43:34,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:43:34,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1539591980, now seen corresponding path program 1 times [2020-08-19 01:43:34,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:43:34,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815340743] [2020-08-19 01:43:34,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:43:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:34,952 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:43:34,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:43:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:34,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:43:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:34,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:43:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:34,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:43:34,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:34,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:43:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:34,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:43:34,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:34,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:43:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:34,996 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 01:43:34,997 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815340743] [2020-08-19 01:43:34,997 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:43:34,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:43:34,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265084272] [2020-08-19 01:43:35,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:43:35,000 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:43:35,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:43:35,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:43:35,001 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand 4 states. [2020-08-19 01:43:35,436 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:43:36,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:43:36,345 INFO L93 Difference]: Finished difference Result 233 states and 286 transitions. [2020-08-19 01:43:36,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:43:36,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 01:43:36,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:43:36,349 INFO L225 Difference]: With dead ends: 233 [2020-08-19 01:43:36,349 INFO L226 Difference]: Without dead ends: 152 [2020-08-19 01:43:36,353 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 01:43:36,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-19 01:43:36,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 124. [2020-08-19 01:43:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-19 01:43:36,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2020-08-19 01:43:36,396 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 47 [2020-08-19 01:43:36,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:43:36,396 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2020-08-19 01:43:36,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:43:36,397 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2020-08-19 01:43:36,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 01:43:36,399 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:43:36,399 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 01:43:36,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:43:36,400 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:43:36,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:43:36,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1079098286, now seen corresponding path program 1 times [2020-08-19 01:43:36,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:43:36,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256034361] [2020-08-19 01:43:36,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:43:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:36,781 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:43:36,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:43:36,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:36,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:43:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:36,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:43:36,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:36,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:43:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:36,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:43:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:36,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:43:36,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:36,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:43:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:36,863 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 01:43:36,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256034361] [2020-08-19 01:43:36,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:43:36,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:43:36,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743276591] [2020-08-19 01:43:36,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:43:36,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:43:36,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:43:36,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:43:36,866 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 8 states. [2020-08-19 01:43:37,297 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:43:37,590 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:43:37,848 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:43:38,071 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:43:38,803 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:43:40,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:43:40,703 INFO L93 Difference]: Finished difference Result 427 states and 532 transitions. [2020-08-19 01:43:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:43:40,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 01:43:40,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:43:40,715 INFO L225 Difference]: With dead ends: 427 [2020-08-19 01:43:40,715 INFO L226 Difference]: Without dead ends: 327 [2020-08-19 01:43:40,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:43:40,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-19 01:43:40,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 262. [2020-08-19 01:43:40,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-08-19 01:43:40,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 318 transitions. [2020-08-19 01:43:40,820 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 318 transitions. Word has length 52 [2020-08-19 01:43:40,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:43:40,820 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 318 transitions. [2020-08-19 01:43:40,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:43:40,820 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 318 transitions. [2020-08-19 01:43:40,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 01:43:40,823 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:43:40,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:43:40,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:43:40,824 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:43:40,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:43:40,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1051584563, now seen corresponding path program 1 times [2020-08-19 01:43:40,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:43:40,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998951889] [2020-08-19 01:43:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:43:40,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:41,175 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:43:41,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:43:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:41,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:43:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:41,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:43:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:41,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:43:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:41,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:43:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:41,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:43:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:41,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:43:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:41,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:43:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:41,288 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 01:43:41,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998951889] [2020-08-19 01:43:41,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:43:41,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:43:41,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707333772] [2020-08-19 01:43:41,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:43:41,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:43:41,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:43:41,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:43:41,290 INFO L87 Difference]: Start difference. First operand 262 states and 318 transitions. Second operand 8 states. [2020-08-19 01:43:41,659 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:43:42,684 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:43:43,081 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:43:43,335 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:43:43,630 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:43:44,141 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:43:45,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:43:45,022 INFO L93 Difference]: Finished difference Result 847 states and 1105 transitions. [2020-08-19 01:43:45,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:43:45,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 01:43:45,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:43:45,030 INFO L225 Difference]: With dead ends: 847 [2020-08-19 01:43:45,030 INFO L226 Difference]: Without dead ends: 609 [2020-08-19 01:43:45,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:43:45,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2020-08-19 01:43:45,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 479. [2020-08-19 01:43:45,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 479 states. [2020-08-19 01:43:45,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 586 transitions. [2020-08-19 01:43:45,165 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 586 transitions. Word has length 57 [2020-08-19 01:43:45,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:43:45,166 INFO L479 AbstractCegarLoop]: Abstraction has 479 states and 586 transitions. [2020-08-19 01:43:45,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:43:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 586 transitions. [2020-08-19 01:43:45,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 01:43:45,169 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:43:45,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:43:45,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:43:45,169 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:43:45,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:43:45,170 INFO L82 PathProgramCache]: Analyzing trace with hash -450930313, now seen corresponding path program 1 times [2020-08-19 01:43:45,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:43:45,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510610144] [2020-08-19 01:43:45,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:43:45,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:45,489 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:43:45,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:43:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:45,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:43:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:45,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:43:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:45,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:43:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:45,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:43:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:45,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:43:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:45,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:43:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:45,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:43:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:45,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:43:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:45,637 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 01:43:45,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510610144] [2020-08-19 01:43:45,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:43:45,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:43:45,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511128759] [2020-08-19 01:43:45,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:43:45,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:43:45,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:43:45,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:43:45,641 INFO L87 Difference]: Start difference. First operand 479 states and 586 transitions. Second operand 9 states. [2020-08-19 01:43:46,039 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:43:47,061 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:43:47,375 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:43:47,620 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:43:48,232 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:43:48,515 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:43:49,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:43:49,559 INFO L93 Difference]: Finished difference Result 1361 states and 1836 transitions. [2020-08-19 01:43:49,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:43:49,560 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-19 01:43:49,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:43:49,567 INFO L225 Difference]: With dead ends: 1361 [2020-08-19 01:43:49,568 INFO L226 Difference]: Without dead ends: 906 [2020-08-19 01:43:49,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:43:49,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-08-19 01:43:49,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 719. [2020-08-19 01:43:49,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 719 states. [2020-08-19 01:43:49,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 887 transitions. [2020-08-19 01:43:49,728 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 887 transitions. Word has length 61 [2020-08-19 01:43:49,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:43:49,729 INFO L479 AbstractCegarLoop]: Abstraction has 719 states and 887 transitions. [2020-08-19 01:43:49,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:43:49,729 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 887 transitions. [2020-08-19 01:43:49,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 01:43:49,734 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:43:49,734 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 01:43:49,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:43:49,734 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:43:49,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:43:49,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1506642599, now seen corresponding path program 1 times [2020-08-19 01:43:49,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:43:49,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636321402] [2020-08-19 01:43:49,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:43:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:50,071 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:43:50,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:43:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:50,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:43:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:50,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:43:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:50,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:43:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:50,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:43:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:50,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:43:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:50,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:43:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:50,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:43:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:50,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:43:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:50,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:43:50,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:50,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:43:50,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:50,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 01:43:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:50,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 01:43:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:50,236 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 01:43:50,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636321402] [2020-08-19 01:43:50,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:43:50,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:43:50,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591180281] [2020-08-19 01:43:50,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:43:50,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:43:50,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:43:50,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:43:50,239 INFO L87 Difference]: Start difference. First operand 719 states and 887 transitions. Second operand 9 states. [2020-08-19 01:43:50,662 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:43:51,683 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:43:51,939 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:43:52,199 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:43:52,506 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:43:54,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:43:54,412 INFO L93 Difference]: Finished difference Result 2409 states and 3416 transitions. [2020-08-19 01:43:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:43:54,413 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-19 01:43:54,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:43:54,434 INFO L225 Difference]: With dead ends: 2409 [2020-08-19 01:43:54,435 INFO L226 Difference]: Without dead ends: 1714 [2020-08-19 01:43:54,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:43:54,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2020-08-19 01:43:54,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1291. [2020-08-19 01:43:54,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2020-08-19 01:43:54,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1578 transitions. [2020-08-19 01:43:54,787 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1578 transitions. Word has length 84 [2020-08-19 01:43:54,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:43:54,788 INFO L479 AbstractCegarLoop]: Abstraction has 1291 states and 1578 transitions. [2020-08-19 01:43:54,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:43:54,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1578 transitions. [2020-08-19 01:43:54,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 01:43:54,793 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:43:54,793 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 01:43:54,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:43:54,794 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:43:54,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:43:54,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1762832698, now seen corresponding path program 1 times [2020-08-19 01:43:54,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:43:54,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581618371] [2020-08-19 01:43:54,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:43:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:55,075 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:43:55,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:43:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:55,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:43:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:55,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:43:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:55,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:43:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:55,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:43:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:55,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:43:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:55,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:43:55,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:55,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:43:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:55,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:43:55,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:55,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:43:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:55,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:43:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:55,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 01:43:55,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:55,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 01:43:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:55,210 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 01:43:55,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581618371] [2020-08-19 01:43:55,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:43:55,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 01:43:55,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162374537] [2020-08-19 01:43:55,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:43:55,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:43:55,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:43:55,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:43:55,213 INFO L87 Difference]: Start difference. First operand 1291 states and 1578 transitions. Second operand 9 states. [2020-08-19 01:43:56,407 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:43:56,654 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:43:56,915 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:43:57,155 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:43:58,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:43:58,262 INFO L93 Difference]: Finished difference Result 2981 states and 3956 transitions. [2020-08-19 01:43:58,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:43:58,263 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-08-19 01:43:58,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:43:58,276 INFO L225 Difference]: With dead ends: 2981 [2020-08-19 01:43:58,277 INFO L226 Difference]: Without dead ends: 1714 [2020-08-19 01:43:58,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:43:58,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1714 states. [2020-08-19 01:43:58,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1714 to 1331. [2020-08-19 01:43:58,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1331 states. [2020-08-19 01:43:58,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 1618 transitions. [2020-08-19 01:43:58,525 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 1618 transitions. Word has length 84 [2020-08-19 01:43:58,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:43:58,526 INFO L479 AbstractCegarLoop]: Abstraction has 1331 states and 1618 transitions. [2020-08-19 01:43:58,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:43:58,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 1618 transitions. [2020-08-19 01:43:58,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 01:43:58,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:43:58,529 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 01:43:58,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:43:58,530 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:43:58,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:43:58,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1785464952, now seen corresponding path program 1 times [2020-08-19 01:43:58,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:43:58,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783126174] [2020-08-19 01:43:58,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:43:58,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:58,791 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:43:58,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:43:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:58,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:43:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:58,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:43:58,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:58,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:43:58,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:58,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:43:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:58,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 01:43:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:58,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:43:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:58,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:43:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:58,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:43:58,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:58,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:43:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:58,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:43:58,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:58,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 01:43:58,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:58,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 01:43:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:43:58,927 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 01:43:58,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [783126174] [2020-08-19 01:43:58,930 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:43:58,930 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 01:43:58,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496532030] [2020-08-19 01:43:58,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:43:58,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:43:58,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:43:58,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:43:58,932 INFO L87 Difference]: Start difference. First operand 1331 states and 1618 transitions. Second operand 11 states. [2020-08-19 01:43:59,458 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:43:59,691 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:43:59,954 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:00,774 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:01,047 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:01,281 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:44:02,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:44:02,503 INFO L93 Difference]: Finished difference Result 2667 states and 3504 transitions. [2020-08-19 01:44:02,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:44:02,504 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 84 [2020-08-19 01:44:02,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:44:02,512 INFO L225 Difference]: With dead ends: 2667 [2020-08-19 01:44:02,513 INFO L226 Difference]: Without dead ends: 1360 [2020-08-19 01:44:02,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:44:02,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1360 states. [2020-08-19 01:44:02,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1360 to 1097. [2020-08-19 01:44:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1097 states. [2020-08-19 01:44:02,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1306 transitions. [2020-08-19 01:44:02,741 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1306 transitions. Word has length 84 [2020-08-19 01:44:02,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:44:02,742 INFO L479 AbstractCegarLoop]: Abstraction has 1097 states and 1306 transitions. [2020-08-19 01:44:02,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:44:02,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1306 transitions. [2020-08-19 01:44:02,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 01:44:02,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:44:02,746 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 01:44:02,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:44:02,746 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:44:02,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:44:02,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1546032113, now seen corresponding path program 1 times [2020-08-19 01:44:02,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:44:02,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189379313] [2020-08-19 01:44:02,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:44:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:44:02,812 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:44:02,812 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:44:02,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:44:02,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:44:02 BoogieIcfgContainer [2020-08-19 01:44:02,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:44:02,862 INFO L168 Benchmark]: Toolchain (without parser) took 32581.63 ms. Allocated memory was 140.0 MB in the beginning and 688.4 MB in the end (delta: 548.4 MB). Free memory was 101.7 MB in the beginning and 379.7 MB in the end (delta: -278.1 MB). Peak memory consumption was 270.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:44:02,869 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-08-19 01:44:02,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 707.38 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 171.3 MB in the end (delta: -69.7 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:44:02,875 INFO L168 Benchmark]: Boogie Preprocessor took 91.82 ms. Allocated memory is still 202.9 MB. Free memory was 171.3 MB in the beginning and 167.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:44:02,881 INFO L168 Benchmark]: RCFGBuilder took 1142.31 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 167.4 MB in the beginning and 196.6 MB in the end (delta: -29.2 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:44:02,881 INFO L168 Benchmark]: TraceAbstraction took 30632.46 ms. Allocated memory was 236.5 MB in the beginning and 688.4 MB in the end (delta: 451.9 MB). Free memory was 196.6 MB in the beginning and 379.7 MB in the end (delta: -183.1 MB). Peak memory consumption was 268.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:44:02,887 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 707.38 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.7 MB in the beginning and 171.3 MB in the end (delta: -69.7 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.82 ms. Allocated memory is still 202.9 MB. Free memory was 171.3 MB in the beginning and 167.4 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1142.31 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 167.4 MB in the beginning and 196.6 MB in the end (delta: -29.2 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30632.46 ms. Allocated memory was 236.5 MB in the beginning and 688.4 MB in the end (delta: 451.9 MB). Free memory was 196.6 MB in the beginning and 379.7 MB in the end (delta: -183.1 MB). Peak memory consumption was 268.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 490]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L51] int pumpRunning = 0; [L52] int systemActive = 1; [L352] int cleanupTimeShifts = 4; [L664] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L862] int waterLevel = 1; [L863] int methaneLevelCritical = 0; [L428] int retValue_acc ; [L429] int tmp ; [L433] FCALL select_helpers() [L434] FCALL select_features() [L435] CALL, EXPR valid_product() [L477] int retValue_acc ; [L480] retValue_acc = 1 [L481] return (retValue_acc); [L435] RET, EXPR valid_product() [L435] tmp = valid_product() [L437] COND TRUE \read(tmp) [L439] FCALL setup() [L440] CALL runTest() [L419] CALL test() [L257] int splverifierCounter ; [L258] int tmp ; [L259] int tmp___0 ; [L260] int tmp___1 ; [L261] int tmp___2 ; [L264] splverifierCounter = 0 [L266] COND TRUE 1 [L268] COND TRUE splverifierCounter < 4 [L274] tmp = __VERIFIER_nondet_int() [L276] COND TRUE \read(tmp) [L278] CALL waterRise() [L880] COND TRUE waterLevel < 2 [L881] waterLevel = waterLevel + 1 [L278] RET waterRise() [L284] tmp___0 = __VERIFIER_nondet_int() [L286] COND TRUE \read(tmp___0) [L288] CALL changeMethaneLevel() [L892] COND FALSE !(\read(methaneLevelCritical)) [L895] methaneLevelCritical = 1 [L288] RET changeMethaneLevel() [L294] tmp___2 = __VERIFIER_nondet_int() [L296] COND FALSE !(\read(tmp___2)) [L302] tmp___1 = __VERIFIER_nondet_int() [L304] COND FALSE !(\read(tmp___1)) [L313] CALL timeShift() [L59] COND FALSE !(\read(pumpRunning)) [L66] COND TRUE \read(systemActive) [L68] CALL processEnvironment() [L114] int tmp ; [L117] COND FALSE !(\read(pumpRunning)) [L132] CALL processEnvironment__wrappee__highWaterSensor() [L88] int tmp ; [L91] COND TRUE ! pumpRunning [L93] CALL, EXPR isHighWaterLevel() [L211] int retValue_acc ; [L212] int tmp ; [L213] int tmp___0 ; [L217] CALL, EXPR isHighWaterSensorDry() [L942] int retValue_acc ; [L945] COND FALSE !(waterLevel < 2) [L949] retValue_acc = 0 [L950] return (retValue_acc); [L217] RET, EXPR isHighWaterSensorDry() [L217] tmp = isHighWaterSensorDry() [L219] COND FALSE !(\read(tmp)) [L222] tmp___0 = 1 [L224] retValue_acc = tmp___0 [L225] return (retValue_acc); [L93] RET, EXPR isHighWaterLevel() [L93] tmp = isHighWaterLevel() [L95] COND TRUE \read(tmp) [L97] CALL activatePump() [L142] pumpRunning = 1 [L97] RET activatePump() [L132] RET processEnvironment__wrappee__highWaterSensor() [L68] RET processEnvironment() [L74] CALL __utac_acc__Specification1_spec__1() [L327] int tmp ; [L328] int tmp___0 ; [L332] CALL, EXPR isMethaneLevelCritical() [L901] int retValue_acc ; [L904] retValue_acc = methaneLevelCritical [L905] return (retValue_acc); [L332] RET, EXPR isMethaneLevelCritical() [L332] tmp = isMethaneLevelCritical() [L334] COND TRUE \read(tmp) [L336] CALL, EXPR isPumpRunning() [L166] int retValue_acc ; [L169] retValue_acc = pumpRunning [L170] return (retValue_acc); [L336] RET, EXPR isPumpRunning() [L336] tmp___0 = isPumpRunning() [L338] COND TRUE \read(tmp___0) [L340] CALL __automaton_fail() [L490] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 235 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.5s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 25.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 948 SDtfs, 1824 SDslu, 1222 SDs, 0 SdLazy, 5507 SolverSat, 1255 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 10.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1331occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 1514 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 603 NumberOfCodeBlocks, 603 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 507 ConstructedInterpolants, 0 QuantifiedInterpolants, 150284 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...