/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:27:28,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:27:28,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:27:28,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:27:28,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:27:28,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:27:28,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:27:28,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:27:28,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:27:28,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:27:28,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:27:28,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:27:28,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:27:28,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:27:28,985 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:27:28,986 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:27:28,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:27:28,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:27:28,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:27:28,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:27:28,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:27:28,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:27:28,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:27:28,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:27:28,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:27:28,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:27:28,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:27:28,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:27:28,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:27:29,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:27:29,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:27:29,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:27:29,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:27:29,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:27:29,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:27:29,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:27:29,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:27:29,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:27:29,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:27:29,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:27:29,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:27:29,006 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 04:27:29,029 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:27:29,029 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:27:29,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:27:29,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:27:29,031 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:27:29,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:27:29,032 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:27:29,032 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:27:29,032 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:27:29,032 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:27:29,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:27:29,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:27:29,033 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:27:29,033 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:27:29,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:27:29,033 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:27:29,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:27:29,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:27:29,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:27:29,034 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:27:29,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:27:29,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:27:29,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:27:29,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:27:29,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:27:29,035 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:27:29,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:27:29,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:27:29,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:27:29,036 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:27:29,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:27:29,343 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:27:29,349 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:27:29,351 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:27:29,351 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:27:29,352 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-08-22 04:27:29,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95c832067/8fe98a6e8a794b58b1615272f29e92ef/FLAGca12676ae [2020-08-22 04:27:29,939 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:27:29,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product35.cil.c [2020-08-22 04:27:29,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95c832067/8fe98a6e8a794b58b1615272f29e92ef/FLAGca12676ae [2020-08-22 04:27:30,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95c832067/8fe98a6e8a794b58b1615272f29e92ef [2020-08-22 04:27:30,274 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:27:30,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:27:30,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:27:30,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:27:30,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:27:30,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:27:30" (1/1) ... [2020-08-22 04:27:30,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387f035d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:30, skipping insertion in model container [2020-08-22 04:27:30,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:27:30" (1/1) ... [2020-08-22 04:27:30,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:27:30,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:27:30,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:27:30,715 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:27:30,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:27:30,978 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:27:30,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:30 WrapperNode [2020-08-22 04:27:30,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:27:30,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:27:30,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:27:30,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:27:30,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:30" (1/1) ... [2020-08-22 04:27:30,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:30" (1/1) ... [2020-08-22 04:27:31,009 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:30" (1/1) ... [2020-08-22 04:27:31,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:30" (1/1) ... [2020-08-22 04:27:31,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:30" (1/1) ... [2020-08-22 04:27:31,051 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:30" (1/1) ... [2020-08-22 04:27:31,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:30" (1/1) ... [2020-08-22 04:27:31,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:27:31,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:27:31,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:27:31,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:27:31,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:30" (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 [2020-08-22 04:27:31,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:27:31,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:27:31,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:27:31,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:27:31,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:27:31,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:27:31,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:27:31,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:27:31,163 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:27:31,164 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:27:31,164 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:27:31,165 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:27:31,165 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:27:31,165 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:27:31,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:27:31,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:27:31,166 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:27:31,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:27:31,166 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 04:27:31,166 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:27:31,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-22 04:27:31,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-22 04:27:31,167 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:27:31,167 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:27:31,167 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:27:31,168 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:27:31,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:27:31,169 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:27:31,169 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:27:31,169 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:27:31,169 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:27:31,169 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:27:31,169 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:27:31,169 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:27:31,170 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:27:31,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:27:31,170 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:27:31,170 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:27:31,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:27:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:27:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:27:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:27:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:27:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:27:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:27:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:27:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:27:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:27:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:27:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:27:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:27:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:27:31,172 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:27:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:27:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:27:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:27:31,173 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:27:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:27:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:27:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:27:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:27:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:27:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:27:31,174 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:27:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:27:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:27:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:27:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:27:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 04:27:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-22 04:27:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:27:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:27:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:27:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:27:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:27:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:27:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:27:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:27:31,178 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:27:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-22 04:27:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:27:31,179 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:27:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:27:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:27:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:27:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:27:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:27:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:27:31,180 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:27:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:27:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:27:31,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:27:32,211 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:27:32,212 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:27:32,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:27:32 BoogieIcfgContainer [2020-08-22 04:27:32,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:27:32,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:27:32,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:27:32,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:27:32,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:27:30" (1/3) ... [2020-08-22 04:27:32,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c27822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:27:32, skipping insertion in model container [2020-08-22 04:27:32,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:27:30" (2/3) ... [2020-08-22 04:27:32,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42c27822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:27:32, skipping insertion in model container [2020-08-22 04:27:32,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:27:32" (3/3) ... [2020-08-22 04:27:32,226 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product35.cil.c [2020-08-22 04:27:32,237 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:27:32,245 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:27:32,260 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:27:32,284 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:27:32,285 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:27:32,285 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:27:32,285 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:27:32,285 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:27:32,286 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:27:32,286 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:27:32,286 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:27:32,308 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states. [2020-08-22 04:27:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 04:27:32,318 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:27:32,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:27:32,320 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:27:32,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:27:32,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1759491915, now seen corresponding path program 1 times [2020-08-22 04:27:32,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:27:32,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459742029] [2020-08-22 04:27:32,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:27:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:33,037 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:27:33,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:27:33,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:33,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:27:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:33,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:27:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:33,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:27:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:33,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:27:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:33,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:27:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:33,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:27:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:33,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 04:27:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:27:33,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459742029] [2020-08-22 04:27:33,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:27:33,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:27:33,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447471296] [2020-08-22 04:27:33,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:27:33,182 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:27:33,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:27:33,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:27:33,199 INFO L87 Difference]: Start difference. First operand 165 states. Second operand 4 states. [2020-08-22 04:27:34,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:27:34,073 INFO L93 Difference]: Finished difference Result 269 states and 353 transitions. [2020-08-22 04:27:34,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 04:27:34,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 04:27:34,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:27:34,089 INFO L225 Difference]: With dead ends: 269 [2020-08-22 04:27:34,089 INFO L226 Difference]: Without dead ends: 151 [2020-08-22 04:27:34,094 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:27:34,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-22 04:27:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 119. [2020-08-22 04:27:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-22 04:27:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2020-08-22 04:27:34,188 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 51 [2020-08-22 04:27:34,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:27:34,188 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2020-08-22 04:27:34,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:27:34,189 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2020-08-22 04:27:34,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 04:27:34,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:27:34,192 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] [2020-08-22 04:27:34,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:27:34,193 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:27:34,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:27:34,193 INFO L82 PathProgramCache]: Analyzing trace with hash -273292015, now seen corresponding path program 1 times [2020-08-22 04:27:34,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:27:34,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401285081] [2020-08-22 04:27:34,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:27:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:34,556 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:27:34,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:27:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:34,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:27:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:34,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:27:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:34,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:27:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:34,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:27:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:34,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:27:34,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:34,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:27:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:34,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:27:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:27:34,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401285081] [2020-08-22 04:27:34,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:27:34,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 04:27:34,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405922682] [2020-08-22 04:27:34,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 04:27:34,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:27:34,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 04:27:34,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:27:34,638 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 5 states. [2020-08-22 04:27:35,136 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:27:35,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:27:35,897 INFO L93 Difference]: Finished difference Result 205 states and 254 transitions. [2020-08-22 04:27:35,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 04:27:35,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 04:27:35,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:27:35,903 INFO L225 Difference]: With dead ends: 205 [2020-08-22 04:27:35,904 INFO L226 Difference]: Without dead ends: 141 [2020-08-22 04:27:35,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 04:27:35,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-08-22 04:27:35,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 110. [2020-08-22 04:27:35,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-22 04:27:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 127 transitions. [2020-08-22 04:27:35,965 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 127 transitions. Word has length 52 [2020-08-22 04:27:35,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:27:35,966 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 127 transitions. [2020-08-22 04:27:35,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 04:27:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 127 transitions. [2020-08-22 04:27:35,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-22 04:27:35,977 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:27:35,978 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] [2020-08-22 04:27:35,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:27:35,978 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:27:35,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:27:35,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1232114680, now seen corresponding path program 1 times [2020-08-22 04:27:35,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:27:35,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188093340] [2020-08-22 04:27:35,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:27:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:36,356 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:27:36,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:27:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:36,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:27:36,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:36,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:27:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:36,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:27:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:36,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:27:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:36,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:27:36,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:36,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 04:27:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:36,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:27:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:36,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:27:36,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188093340] [2020-08-22 04:27:36,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:27:36,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:27:36,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164100582] [2020-08-22 04:27:36,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:27:36,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:27:36,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:27:36,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:27:36,511 INFO L87 Difference]: Start difference. First operand 110 states and 127 transitions. Second operand 9 states. [2020-08-22 04:27:36,865 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:27:37,178 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:37,453 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:37,731 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:38,592 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:27:39,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:27:39,934 INFO L93 Difference]: Finished difference Result 374 states and 471 transitions. [2020-08-22 04:27:39,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:27:39,939 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-22 04:27:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:27:39,943 INFO L225 Difference]: With dead ends: 374 [2020-08-22 04:27:39,944 INFO L226 Difference]: Without dead ends: 292 [2020-08-22 04:27:39,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-22 04:27:39,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-08-22 04:27:40,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 223. [2020-08-22 04:27:40,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-08-22 04:27:40,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 268 transitions. [2020-08-22 04:27:40,017 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 268 transitions. Word has length 56 [2020-08-22 04:27:40,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:27:40,017 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 268 transitions. [2020-08-22 04:27:40,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:27:40,018 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 268 transitions. [2020-08-22 04:27:40,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 04:27:40,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:27:40,019 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] [2020-08-22 04:27:40,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:27:40,020 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:27:40,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:27:40,020 INFO L82 PathProgramCache]: Analyzing trace with hash 466387433, now seen corresponding path program 1 times [2020-08-22 04:27:40,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:27:40,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1841703375] [2020-08-22 04:27:40,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:27:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:40,350 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:27:40,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:27:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:40,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:27:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:40,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:27:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:40,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:27:40,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:40,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:27:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:40,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:27:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:40,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:27:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:40,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:27:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:40,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 04:27:40,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:40,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:27:40,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1841703375] [2020-08-22 04:27:40,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:27:40,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 04:27:40,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418219086] [2020-08-22 04:27:40,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 04:27:40,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:27:40,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 04:27:40,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 04:27:40,461 INFO L87 Difference]: Start difference. First operand 223 states and 268 transitions. Second operand 9 states. [2020-08-22 04:27:40,849 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:27:42,031 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:42,363 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:42,658 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:42,916 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:27:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:27:43,945 INFO L93 Difference]: Finished difference Result 711 states and 943 transitions. [2020-08-22 04:27:43,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 04:27:43,947 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-22 04:27:43,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:27:43,954 INFO L225 Difference]: With dead ends: 711 [2020-08-22 04:27:43,954 INFO L226 Difference]: Without dead ends: 516 [2020-08-22 04:27:43,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-22 04:27:43,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2020-08-22 04:27:44,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 394. [2020-08-22 04:27:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-08-22 04:27:44,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 476 transitions. [2020-08-22 04:27:44,078 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 476 transitions. Word has length 62 [2020-08-22 04:27:44,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:27:44,078 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 476 transitions. [2020-08-22 04:27:44,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 04:27:44,079 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 476 transitions. [2020-08-22 04:27:44,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 04:27:44,081 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:27:44,081 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] [2020-08-22 04:27:44,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:27:44,082 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:27:44,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:27:44,082 INFO L82 PathProgramCache]: Analyzing trace with hash -995650491, now seen corresponding path program 1 times [2020-08-22 04:27:44,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:27:44,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1538546294] [2020-08-22 04:27:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:27:44,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:44,411 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:27:44,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:27:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:44,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:27:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:44,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:27:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:44,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:27:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:44,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:27:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:44,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:27:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:44,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:27:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:44,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 04:27:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:44,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-22 04:27:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:44,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-22 04:27:44,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:44,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:27:44,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1538546294] [2020-08-22 04:27:44,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:27:44,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:27:44,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022349774] [2020-08-22 04:27:44,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:27:44,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:27:44,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:27:44,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:27:44,544 INFO L87 Difference]: Start difference. First operand 394 states and 476 transitions. Second operand 10 states. [2020-08-22 04:27:45,020 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:27:46,213 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:46,530 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:46,779 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:47,322 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:27:48,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:27:48,321 INFO L93 Difference]: Finished difference Result 1128 states and 1528 transitions. [2020-08-22 04:27:48,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 04:27:48,328 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-22 04:27:48,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:27:48,336 INFO L225 Difference]: With dead ends: 1128 [2020-08-22 04:27:48,336 INFO L226 Difference]: Without dead ends: 762 [2020-08-22 04:27:48,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-22 04:27:48,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2020-08-22 04:27:48,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 577. [2020-08-22 04:27:48,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 577 states. [2020-08-22 04:27:48,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 699 transitions. [2020-08-22 04:27:48,525 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 699 transitions. Word has length 66 [2020-08-22 04:27:48,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:27:48,526 INFO L479 AbstractCegarLoop]: Abstraction has 577 states and 699 transitions. [2020-08-22 04:27:48,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:27:48,527 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 699 transitions. [2020-08-22 04:27:48,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 04:27:48,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:27:48,529 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] [2020-08-22 04:27:48,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:27:48,530 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:27:48,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:27:48,531 INFO L82 PathProgramCache]: Analyzing trace with hash 155563889, now seen corresponding path program 1 times [2020-08-22 04:27:48,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:27:48,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749018930] [2020-08-22 04:27:48,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:27:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:48,839 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:27:48,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:27:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:48,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:27:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:48,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:27:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:48,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:27:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:48,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:27:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:48,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:27:48,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:48,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:27:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:27:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:48,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:27:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:27:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:48,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:27:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 04:27:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:48,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 04:27:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:48,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:27:48,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749018930] [2020-08-22 04:27:48,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:27:48,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:27:48,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026007230] [2020-08-22 04:27:48,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:27:48,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:27:48,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:27:48,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:27:48,970 INFO L87 Difference]: Start difference. First operand 577 states and 699 transitions. Second operand 10 states. [2020-08-22 04:27:49,325 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:27:50,275 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:27:50,543 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-22 04:27:50,821 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:27:51,096 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:27:52,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:27:52,985 INFO L93 Difference]: Finished difference Result 2076 states and 2977 transitions. [2020-08-22 04:27:52,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 04:27:52,986 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-22 04:27:52,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:27:53,002 INFO L225 Difference]: With dead ends: 2076 [2020-08-22 04:27:53,003 INFO L226 Difference]: Without dead ends: 1527 [2020-08-22 04:27:53,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-22 04:27:53,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1527 states. [2020-08-22 04:27:53,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1527 to 1103. [2020-08-22 04:27:53,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-22 04:27:53,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1340 transitions. [2020-08-22 04:27:53,244 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1340 transitions. Word has length 83 [2020-08-22 04:27:53,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:27:53,245 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1340 transitions. [2020-08-22 04:27:53,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:27:53,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1340 transitions. [2020-08-22 04:27:53,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 04:27:53,249 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:27:53,249 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] [2020-08-22 04:27:53,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:27:53,249 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:27:53,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:27:53,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1955726480, now seen corresponding path program 1 times [2020-08-22 04:27:53,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:27:53,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814098085] [2020-08-22 04:27:53,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:27:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:53,546 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:27:53,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:27:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:53,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:27:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:53,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:27:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:53,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:27:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:53,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:27:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:53,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:27:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:53,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:27:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:53,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:27:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:53,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:27:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:53,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:27:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:53,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:27:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:53,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 04:27:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:53,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 04:27:53,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:27:53,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814098085] [2020-08-22 04:27:53,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:27:53,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 04:27:53,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374868414] [2020-08-22 04:27:53,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:27:53,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:27:53,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:27:53,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:27:53,710 INFO L87 Difference]: Start difference. First operand 1103 states and 1340 transitions. Second operand 10 states. [2020-08-22 04:27:54,854 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:27:55,138 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 04:27:55,471 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:27:55,869 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:27:56,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:27:56,999 INFO L93 Difference]: Finished difference Result 2615 states and 3505 transitions. [2020-08-22 04:27:57,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-22 04:27:57,002 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2020-08-22 04:27:57,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:27:57,017 INFO L225 Difference]: With dead ends: 2615 [2020-08-22 04:27:57,017 INFO L226 Difference]: Without dead ends: 1540 [2020-08-22 04:27:57,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-22 04:27:57,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2020-08-22 04:27:57,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1143. [2020-08-22 04:27:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-08-22 04:27:57,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1380 transitions. [2020-08-22 04:27:57,312 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1380 transitions. Word has length 83 [2020-08-22 04:27:57,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:27:57,312 INFO L479 AbstractCegarLoop]: Abstraction has 1143 states and 1380 transitions. [2020-08-22 04:27:57,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:27:57,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1380 transitions. [2020-08-22 04:27:57,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 04:27:57,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:27:57,316 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] [2020-08-22 04:27:57,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:27:57,317 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:27:57,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:27:57,317 INFO L82 PathProgramCache]: Analyzing trace with hash -569523086, now seen corresponding path program 1 times [2020-08-22 04:27:57,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:27:57,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503807367] [2020-08-22 04:27:57,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:27:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:57,577 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:27:57,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:27:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:57,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:27:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:57,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:27:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:57,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:27:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:57,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:27:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:57,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:27:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:57,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 04:27:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:57,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:27:57,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:57,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:27:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:57,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:27:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:57,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:27:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:57,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-22 04:27:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:57,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 04:27:57,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:27:57,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:27:57,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503807367] [2020-08-22 04:27:57,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:27:57,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:27:57,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216209030] [2020-08-22 04:27:57,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:27:57,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:27:57,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:27:57,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:27:57,721 INFO L87 Difference]: Start difference. First operand 1143 states and 1380 transitions. Second operand 12 states. [2020-08-22 04:27:58,208 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:27:58,455 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:27:58,687 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:27:59,438 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:27:59,728 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:27:59,966 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:28:01,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:01,125 INFO L93 Difference]: Finished difference Result 2319 states and 3065 transitions. [2020-08-22 04:28:01,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 04:28:01,126 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2020-08-22 04:28:01,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:01,135 INFO L225 Difference]: With dead ends: 2319 [2020-08-22 04:28:01,136 INFO L226 Difference]: Without dead ends: 1204 [2020-08-22 04:28:01,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-22 04:28:01,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2020-08-22 04:28:01,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 927. [2020-08-22 04:28:01,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 927 states. [2020-08-22 04:28:01,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 927 states to 927 states and 1088 transitions. [2020-08-22 04:28:01,358 INFO L78 Accepts]: Start accepts. Automaton has 927 states and 1088 transitions. Word has length 83 [2020-08-22 04:28:01,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:01,358 INFO L479 AbstractCegarLoop]: Abstraction has 927 states and 1088 transitions. [2020-08-22 04:28:01,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:28:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 927 states and 1088 transitions. [2020-08-22 04:28:01,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-22 04:28:01,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:01,361 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] [2020-08-22 04:28:01,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:28:01,362 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:01,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:01,362 INFO L82 PathProgramCache]: Analyzing trace with hash 855595353, now seen corresponding path program 1 times [2020-08-22 04:28:01,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:01,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038461604] [2020-08-22 04:28:01,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,619 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:28:01,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:28:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:28:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:28:01,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:28:01,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:28:01,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-22 04:28:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:28:01,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:28:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 04:28:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:28:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:28:01,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:28:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-22 04:28:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-22 04:28:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:28:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:28:01,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038461604] [2020-08-22 04:28:01,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:28:01,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:28:01,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391428196] [2020-08-22 04:28:01,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:28:01,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:28:01,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:28:01,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:28:01,746 INFO L87 Difference]: Start difference. First operand 927 states and 1088 transitions. Second operand 8 states. [2020-08-22 04:28:02,113 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:28:04,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:28:04,508 INFO L93 Difference]: Finished difference Result 1851 states and 2454 transitions. [2020-08-22 04:28:04,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 04:28:04,509 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-08-22 04:28:04,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:28:04,521 INFO L225 Difference]: With dead ends: 1851 [2020-08-22 04:28:04,521 INFO L226 Difference]: Without dead ends: 1848 [2020-08-22 04:28:04,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-22 04:28:04,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2020-08-22 04:28:04,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1424. [2020-08-22 04:28:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2020-08-22 04:28:04,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1688 transitions. [2020-08-22 04:28:04,838 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1688 transitions. Word has length 87 [2020-08-22 04:28:04,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:28:04,839 INFO L479 AbstractCegarLoop]: Abstraction has 1424 states and 1688 transitions. [2020-08-22 04:28:04,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:28:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1688 transitions. [2020-08-22 04:28:04,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-08-22 04:28:04,847 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:28:04,847 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:28:04,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:28:04,847 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:28:04,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:28:04,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1738865668, now seen corresponding path program 1 times [2020-08-22 04:28:04,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:28:04,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1202170223] [2020-08-22 04:28:04,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:28:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:28:04,937 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:28:04,937 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:28:04,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:28:04,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:28:04 BoogieIcfgContainer [2020-08-22 04:28:04,994 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:28:04,999 INFO L168 Benchmark]: Toolchain (without parser) took 34720.12 ms. Allocated memory was 146.8 MB in the beginning and 674.2 MB in the end (delta: 527.4 MB). Free memory was 102.1 MB in the beginning and 160.3 MB in the end (delta: -58.2 MB). Peak memory consumption was 469.2 MB. Max. memory is 7.1 GB. [2020-08-22 04:28:05,001 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-08-22 04:28:05,006 INFO L168 Benchmark]: CACSL2BoogieTranslator took 702.10 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.6 MB in the beginning and 174.0 MB in the end (delta: -72.4 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-08-22 04:28:05,007 INFO L168 Benchmark]: Boogie Preprocessor took 88.39 ms. Allocated memory is still 203.9 MB. Free memory was 174.0 MB in the beginning and 169.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-08-22 04:28:05,009 INFO L168 Benchmark]: RCFGBuilder took 1149.59 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 169.0 MB in the beginning and 200.9 MB in the end (delta: -31.9 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2020-08-22 04:28:05,012 INFO L168 Benchmark]: TraceAbstraction took 32774.81 ms. Allocated memory was 237.5 MB in the beginning and 674.2 MB in the end (delta: 436.7 MB). Free memory was 199.2 MB in the beginning and 160.3 MB in the end (delta: 38.9 MB). Peak memory consumption was 475.6 MB. Max. memory is 7.1 GB. [2020-08-22 04:28:05,019 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 702.10 ms. Allocated memory was 146.8 MB in the beginning and 203.9 MB in the end (delta: 57.1 MB). Free memory was 101.6 MB in the beginning and 174.0 MB in the end (delta: -72.4 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.39 ms. Allocated memory is still 203.9 MB. Free memory was 174.0 MB in the beginning and 169.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1149.59 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 169.0 MB in the beginning and 200.9 MB in the end (delta: -31.9 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32774.81 ms. Allocated memory was 237.5 MB in the beginning and 674.2 MB in the end (delta: 436.7 MB). Free memory was 199.2 MB in the beginning and 160.3 MB in the end (delta: 38.9 MB). Peak memory consumption was 475.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 736]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L416] int pumpRunning = 0; [L417] int systemActive = 1; [L655] int methAndRunningLastTime ; [L741] int cleanupTimeShifts = 4; [L839] int waterLevel = 1; [L840] int methaneLevelCritical = 0; [L815] int retValue_acc ; [L816] int tmp ; [L820] FCALL select_helpers() [L821] FCALL select_features() [L822] CALL, EXPR valid_product() [L723] int retValue_acc ; [L726] retValue_acc = 1 [L727] return (retValue_acc); [L822] RET, EXPR valid_product() [L822] tmp = valid_product() [L824] COND TRUE \read(tmp) [L826] FCALL setup() [L827] CALL runTest() [L808] CALL __utac_acc__Specification2_spec__1() [L660] methAndRunningLastTime = 0 [L808] RET __utac_acc__Specification2_spec__1() [L809] CALL test() [L588] int splverifierCounter ; [L589] int tmp ; [L590] int tmp___0 ; [L591] int tmp___1 ; [L592] int tmp___2 ; [L595] splverifierCounter = 0 [L597] COND TRUE 1 [L599] COND TRUE splverifierCounter < 4 [L605] tmp = __VERIFIER_nondet_int() [L607] COND TRUE \read(tmp) [L609] CALL waterRise() [L857] COND TRUE waterLevel < 2 [L858] waterLevel = waterLevel + 1 [L609] RET waterRise() [L615] tmp___0 = __VERIFIER_nondet_int() [L617] COND TRUE \read(tmp___0) [L619] CALL changeMethaneLevel() [L869] COND FALSE !(\read(methaneLevelCritical)) [L872] methaneLevelCritical = 1 [L619] RET changeMethaneLevel() [L625] tmp___2 = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp___2) [L642] CALL timeShift() [L424] COND FALSE !(\read(pumpRunning)) [L431] COND TRUE \read(systemActive) [L433] CALL processEnvironment() [L453] int tmp ; [L456] COND TRUE ! pumpRunning [L458] CALL, EXPR isHighWaterLevel() [L550] int retValue_acc ; [L551] int tmp ; [L552] int tmp___0 ; [L556] CALL, EXPR isHighWaterSensorDry() [L919] int retValue_acc ; [L922] COND FALSE !(waterLevel < 2) [L926] retValue_acc = 0 [L927] return (retValue_acc); [L556] RET, EXPR isHighWaterSensorDry() [L556] tmp = isHighWaterSensorDry() [L558] COND FALSE !(\read(tmp)) [L561] tmp___0 = 1 [L563] retValue_acc = tmp___0 [L564] return (retValue_acc); [L458] RET, EXPR isHighWaterLevel() [L458] tmp = isHighWaterLevel() [L460] COND TRUE \read(tmp) [L462] CALL activatePump() [L481] pumpRunning = 1 [L462] RET activatePump() [L433] RET processEnvironment() [L439] CALL __utac_acc__Specification2_spec__2() [L665] int tmp ; [L666] int tmp___0 ; [L670] CALL, EXPR isMethaneLevelCritical() [L878] int retValue_acc ; [L881] retValue_acc = methaneLevelCritical [L882] return (retValue_acc); [L670] RET, EXPR isMethaneLevelCritical() [L670] tmp = isMethaneLevelCritical() [L672] COND TRUE \read(tmp) [L674] CALL, EXPR isPumpRunning() [L505] int retValue_acc ; [L508] retValue_acc = pumpRunning [L509] return (retValue_acc); [L674] RET, EXPR isPumpRunning() [L674] tmp___0 = isPumpRunning() [L676] COND TRUE \read(tmp___0) [L677] COND FALSE !(\read(methAndRunningLastTime)) [L682] methAndRunningLastTime = 1 [L439] RET __utac_acc__Specification2_spec__2() [L642] RET timeShift() [L597] COND TRUE 1 [L599] COND TRUE splverifierCounter < 4 [L605] tmp = __VERIFIER_nondet_int() [L607] COND FALSE !(\read(tmp)) [L615] tmp___0 = __VERIFIER_nondet_int() [L617] COND FALSE !(\read(tmp___0)) [L625] tmp___2 = __VERIFIER_nondet_int() [L627] COND TRUE \read(tmp___2) [L642] CALL timeShift() [L424] COND TRUE \read(pumpRunning) [L426] CALL lowerWaterLevel() [L845] COND TRUE waterLevel > 0 [L846] waterLevel = waterLevel - 1 [L426] RET lowerWaterLevel() [L431] COND TRUE \read(systemActive) [L433] CALL processEnvironment() [L453] int tmp ; [L456] COND FALSE !(! pumpRunning) [L471] FCALL processEnvironment__wrappee__base() [L433] RET processEnvironment() [L439] CALL __utac_acc__Specification2_spec__2() [L665] int tmp ; [L666] int tmp___0 ; [L670] CALL, EXPR isMethaneLevelCritical() [L878] int retValue_acc ; [L881] retValue_acc = methaneLevelCritical [L882] return (retValue_acc); [L670] RET, EXPR isMethaneLevelCritical() [L670] tmp = isMethaneLevelCritical() [L672] COND TRUE \read(tmp) [L674] CALL, EXPR isPumpRunning() [L505] int retValue_acc ; [L508] retValue_acc = pumpRunning [L509] return (retValue_acc); [L674] RET, EXPR isPumpRunning() [L674] tmp___0 = isPumpRunning() [L676] COND TRUE \read(tmp___0) [L677] COND TRUE \read(methAndRunningLastTime) [L679] CALL __automaton_fail() [L736] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 226 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 32.6s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 26.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 923 SDtfs, 2503 SDslu, 1374 SDs, 0 SdLazy, 5855 SolverSat, 1724 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 377 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 11.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1424occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 1961 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 752 NumberOfCodeBlocks, 752 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 614 ConstructedInterpolants, 0 QuantifiedInterpolants, 188498 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...