/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:18:16,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:18:16,921 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:18:16,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:18:16,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:18:16,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:18:16,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:18:16,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:18:16,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:18:16,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:18:16,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:18:16,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:18:16,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:18:16,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:18:16,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:18:16,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:18:17,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:18:17,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:18:17,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:18:17,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:18:17,015 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:18:17,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:18:17,017 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:18:17,018 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:18:17,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:18:17,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:18:17,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:18:17,026 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:18:17,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:18:17,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:18:17,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:18:17,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:18:17,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:18:17,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:18:17,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:18:17,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:18:17,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:18:17,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:18:17,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:18:17,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:18:17,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:18:17,037 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 [2020-08-18 15:18:17,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:18:17,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:18:17,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:18:17,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:18:17,090 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:18:17,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:18:17,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:18:17,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:18:17,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:18:17,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:18:17,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:18:17,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:18:17,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:18:17,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:18:17,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:18:17,094 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:18:17,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:18:17,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:18:17,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:18:17,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:18:17,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:18:17,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:18:17,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:18:17,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:18:17,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:18:17,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:18:17,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:18:17,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:18:17,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:18:17,096 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 -> false [2020-08-18 15:18:17,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:18:17,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:18:17,393 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:18:17,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:18:17,395 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:18:17,396 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-08-18 15:18:17,460 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adf4fb1e3/5b99f3c22ee5473b96031d585604f5c3/FLAG8a6287ba5 [2020-08-18 15:18:18,023 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:18:18,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product20.cil.c [2020-08-18 15:18:18,038 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adf4fb1e3/5b99f3c22ee5473b96031d585604f5c3/FLAG8a6287ba5 [2020-08-18 15:18:18,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adf4fb1e3/5b99f3c22ee5473b96031d585604f5c3 [2020-08-18 15:18:18,364 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:18:18,366 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:18:18,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:18:18,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:18:18,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:18:18,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:18:18" (1/1) ... [2020-08-18 15:18:18,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c07bf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:18, skipping insertion in model container [2020-08-18 15:18:18,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:18:18" (1/1) ... [2020-08-18 15:18:18,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:18:18,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:18:18,872 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:18:18,887 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:18:18,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:18:19,001 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:18:19,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:19 WrapperNode [2020-08-18 15:18:19,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:18:19,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:18:19,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:18:19,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:18:19,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:19" (1/1) ... [2020-08-18 15:18:19,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:19" (1/1) ... [2020-08-18 15:18:19,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:19" (1/1) ... [2020-08-18 15:18:19,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:19" (1/1) ... [2020-08-18 15:18:19,067 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:19" (1/1) ... [2020-08-18 15:18:19,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:19" (1/1) ... [2020-08-18 15:18:19,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:19" (1/1) ... [2020-08-18 15:18:19,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:18:19,092 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:18:19,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:18:19,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:18:19,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:19" (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 [2020-08-18 15:18:19,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:18:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:18:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 15:18:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 15:18:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 15:18:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 15:18:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 15:18:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 15:18:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 15:18:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 15:18:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 15:18:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 15:18:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 15:18:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 15:18:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 15:18:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 15:18:19,167 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 15:18:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:18:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 15:18:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 15:18:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 15:18:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 15:18:19,168 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 15:18:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 15:18:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 15:18:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 15:18:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 15:18:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 15:18:19,169 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 15:18:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 15:18:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 15:18:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 15:18:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 15:18:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 15:18:19,170 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 15:18:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 15:18:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 15:18:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 15:18:19,171 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 15:18:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:18:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:18:19,171 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 15:18:19,172 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 15:18:19,172 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 15:18:19,172 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 15:18:19,172 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 15:18:19,172 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 15:18:19,172 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:18:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:18:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 15:18:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:18:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:18:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:18:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:18:19,173 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 15:18:19,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:18:19,174 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 15:18:19,174 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 15:18:19,174 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:18:19,174 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 15:18:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 15:18:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:18:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 15:18:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 15:18:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 15:18:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 15:18:19,175 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 15:18:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 15:18:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 15:18:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 15:18:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 15:18:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 15:18:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:18:19,176 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 15:18:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 15:18:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 15:18:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 15:18:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 15:18:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 15:18:19,177 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 15:18:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 15:18:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 15:18:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 15:18:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 15:18:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 15:18:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 15:18:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 15:18:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 15:18:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 15:18:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:18:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 15:18:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:18:20,408 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:18:20,410 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 15:18:20,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:18:20 BoogieIcfgContainer [2020-08-18 15:18:20,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:18:20,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:18:20,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:18:20,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:18:20,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:18:18" (1/3) ... [2020-08-18 15:18:20,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8c4397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:18:20, skipping insertion in model container [2020-08-18 15:18:20,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:18:19" (2/3) ... [2020-08-18 15:18:20,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8c4397 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:18:20, skipping insertion in model container [2020-08-18 15:18:20,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:18:20" (3/3) ... [2020-08-18 15:18:20,430 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product20.cil.c [2020-08-18 15:18:20,441 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:18:20,454 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:18:20,469 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:18:20,503 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:18:20,503 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:18:20,504 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:18:20,504 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:18:20,504 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:18:20,504 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:18:20,504 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:18:20,505 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:18:20,538 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-08-18 15:18:20,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 15:18:20,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:20,557 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] [2020-08-18 15:18:20,558 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:20,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:20,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1020125937, now seen corresponding path program 1 times [2020-08-18 15:18:20,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:20,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513133981] [2020-08-18 15:18:20,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:21,265 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:21,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:21,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:18:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:21,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:18:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:21,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:18:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:21,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:18:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:21,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:18:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:21,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:18:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:21,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 15:18:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:18:21,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513133981] [2020-08-18 15:18:21,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:18:21,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 15:18:21,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579789135] [2020-08-18 15:18:21,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 15:18:21,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:18:21,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 15:18:21,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:18:21,461 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 3 states. [2020-08-18 15:18:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:18:22,507 INFO L93 Difference]: Finished difference Result 282 states and 370 transitions. [2020-08-18 15:18:22,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:18:22,509 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 15:18:22,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:18:22,524 INFO L225 Difference]: With dead ends: 282 [2020-08-18 15:18:22,524 INFO L226 Difference]: Without dead ends: 153 [2020-08-18 15:18:22,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:18:22,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-18 15:18:22,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 120. [2020-08-18 15:18:22,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 15:18:22,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 140 transitions. [2020-08-18 15:18:22,634 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 140 transitions. Word has length 52 [2020-08-18 15:18:22,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:18:22,636 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 140 transitions. [2020-08-18 15:18:22,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 15:18:22,637 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 140 transitions. [2020-08-18 15:18:22,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 15:18:22,644 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:22,644 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] [2020-08-18 15:18:22,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:18:22,646 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:22,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:22,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1976002315, now seen corresponding path program 1 times [2020-08-18 15:18:22,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:22,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598326157] [2020-08-18 15:18:22,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:22,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:23,032 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:23,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:23,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:18:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:23,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:18:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:23,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:18:23,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:23,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:18:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:23,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:18:23,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:18:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:23,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 15:18:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:23,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:18:23,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598326157] [2020-08-18 15:18:23,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:18:23,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:18:23,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279399360] [2020-08-18 15:18:23,097 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:18:23,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:18:23,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:18:23,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:18:23,098 INFO L87 Difference]: Start difference. First operand 120 states and 140 transitions. Second operand 4 states. [2020-08-18 15:18:23,533 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:18:24,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:18:24,302 INFO L93 Difference]: Finished difference Result 205 states and 249 transitions. [2020-08-18 15:18:24,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:18:24,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 15:18:24,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:18:24,310 INFO L225 Difference]: With dead ends: 205 [2020-08-18 15:18:24,310 INFO L226 Difference]: Without dead ends: 137 [2020-08-18 15:18:24,311 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:18:24,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-18 15:18:24,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 111. [2020-08-18 15:18:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-08-18 15:18:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 128 transitions. [2020-08-18 15:18:24,344 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 128 transitions. Word has length 53 [2020-08-18 15:18:24,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:18:24,345 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 128 transitions. [2020-08-18 15:18:24,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:18:24,345 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 128 transitions. [2020-08-18 15:18:24,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 15:18:24,347 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:24,347 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] [2020-08-18 15:18:24,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:18:24,348 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:24,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:24,348 INFO L82 PathProgramCache]: Analyzing trace with hash -979616740, now seen corresponding path program 1 times [2020-08-18 15:18:24,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:24,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500305290] [2020-08-18 15:18:24,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:24,675 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:24,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:24,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:18:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:24,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:18:24,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:24,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:18:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:24,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:18:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:24,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:18:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:24,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 15:18:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:24,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 15:18:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:18:24,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500305290] [2020-08-18 15:18:24,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:18:24,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:18:24,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904468641] [2020-08-18 15:18:24,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:18:24,793 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:18:24,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:18:24,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:18:24,794 INFO L87 Difference]: Start difference. First operand 111 states and 128 transitions. Second operand 8 states. [2020-08-18 15:18:25,131 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:18:25,464 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:25,697 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:25,917 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:26,657 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:18:28,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:18:28,272 INFO L93 Difference]: Finished difference Result 390 states and 482 transitions. [2020-08-18 15:18:28,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 15:18:28,277 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 15:18:28,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:18:28,284 INFO L225 Difference]: With dead ends: 390 [2020-08-18 15:18:28,284 INFO L226 Difference]: Without dead ends: 303 [2020-08-18 15:18:28,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-18 15:18:28,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2020-08-18 15:18:28,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 242. [2020-08-18 15:18:28,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-18 15:18:28,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 291 transitions. [2020-08-18 15:18:28,361 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 291 transitions. Word has length 58 [2020-08-18 15:18:28,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:18:28,362 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 291 transitions. [2020-08-18 15:18:28,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:18:28,362 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 291 transitions. [2020-08-18 15:18:28,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-18 15:18:28,365 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:28,365 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] [2020-08-18 15:18:28,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:18:28,366 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:28,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:28,366 INFO L82 PathProgramCache]: Analyzing trace with hash 1983050375, now seen corresponding path program 1 times [2020-08-18 15:18:28,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:28,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520021866] [2020-08-18 15:18:28,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:28,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:28,704 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:28,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:28,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:18:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:28,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:18:28,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:28,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:18:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:28,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:18:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:28,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:18:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:28,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 15:18:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:28,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 15:18:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:28,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 15:18:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:28,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:18:28,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520021866] [2020-08-18 15:18:28,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:18:28,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:18:28,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688809008] [2020-08-18 15:18:28,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:18:28,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:18:28,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:18:28,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:18:28,788 INFO L87 Difference]: Start difference. First operand 242 states and 291 transitions. Second operand 8 states. [2020-08-18 15:18:29,151 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:18:30,447 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:30,752 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:31,025 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:31,303 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:18:31,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:18:31,942 INFO L93 Difference]: Finished difference Result 741 states and 971 transitions. [2020-08-18 15:18:31,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:18:31,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-18 15:18:31,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:18:31,949 INFO L225 Difference]: With dead ends: 741 [2020-08-18 15:18:31,949 INFO L226 Difference]: Without dead ends: 523 [2020-08-18 15:18:31,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:18:31,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2020-08-18 15:18:32,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 457. [2020-08-18 15:18:32,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-08-18 15:18:32,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 563 transitions. [2020-08-18 15:18:32,079 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 563 transitions. Word has length 63 [2020-08-18 15:18:32,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:18:32,080 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 563 transitions. [2020-08-18 15:18:32,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:18:32,080 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 563 transitions. [2020-08-18 15:18:32,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 15:18:32,084 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:32,084 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] [2020-08-18 15:18:32,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:18:32,085 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:32,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:32,085 INFO L82 PathProgramCache]: Analyzing trace with hash -572770771, now seen corresponding path program 1 times [2020-08-18 15:18:32,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:32,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067169259] [2020-08-18 15:18:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:32,418 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:32,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:32,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:18:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:32,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:18:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:32,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:18:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:32,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:18:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:32,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:18:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:32,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 15:18:32,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:32,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 15:18:32,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:32,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 15:18:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:32,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 15:18:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:32,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:18:32,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067169259] [2020-08-18 15:18:32,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:18:32,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:18:32,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256707322] [2020-08-18 15:18:32,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:18:32,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:18:32,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:18:32,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:18:32,588 INFO L87 Difference]: Start difference. First operand 457 states and 563 transitions. Second operand 6 states. [2020-08-18 15:18:32,954 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:18:33,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:18:33,784 INFO L93 Difference]: Finished difference Result 806 states and 1047 transitions. [2020-08-18 15:18:33,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 15:18:33,784 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-18 15:18:33,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:18:33,789 INFO L225 Difference]: With dead ends: 806 [2020-08-18 15:18:33,789 INFO L226 Difference]: Without dead ends: 373 [2020-08-18 15:18:33,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-18 15:18:33,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-08-18 15:18:33,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 323. [2020-08-18 15:18:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-08-18 15:18:33,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 374 transitions. [2020-08-18 15:18:33,858 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 374 transitions. Word has length 67 [2020-08-18 15:18:33,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:18:33,858 INFO L479 AbstractCegarLoop]: Abstraction has 323 states and 374 transitions. [2020-08-18 15:18:33,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:18:33,858 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 374 transitions. [2020-08-18 15:18:33,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-18 15:18:33,860 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:33,860 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] [2020-08-18 15:18:33,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:18:33,861 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:33,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:33,861 INFO L82 PathProgramCache]: Analyzing trace with hash 935934029, now seen corresponding path program 1 times [2020-08-18 15:18:33,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:33,862 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146010958] [2020-08-18 15:18:33,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:33,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:18:33,914 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:18:33,914 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:18:33,918 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:18:33,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:18:33 BoogieIcfgContainer [2020-08-18 15:18:33,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:18:33,944 INFO L168 Benchmark]: Toolchain (without parser) took 15577.73 ms. Allocated memory was 141.6 MB in the beginning and 460.8 MB in the end (delta: 319.3 MB). Free memory was 103.4 MB in the beginning and 117.1 MB in the end (delta: -13.7 MB). Peak memory consumption was 305.6 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:33,944 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 15:18:33,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 635.75 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.2 MB in the beginning and 172.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:33,946 INFO L168 Benchmark]: Boogie Preprocessor took 88.57 ms. Allocated memory is still 205.0 MB. Free memory was 172.1 MB in the beginning and 167.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:33,947 INFO L168 Benchmark]: RCFGBuilder took 1327.43 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 167.5 MB in the beginning and 189.8 MB in the end (delta: -22.3 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:33,948 INFO L168 Benchmark]: TraceAbstraction took 13520.08 ms. Allocated memory was 233.8 MB in the beginning and 460.8 MB in the end (delta: 227.0 MB). Free memory was 189.8 MB in the beginning and 117.1 MB in the end (delta: 72.7 MB). Peak memory consumption was 299.7 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:33,951 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 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 635.75 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.2 MB in the beginning and 172.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.57 ms. Allocated memory is still 205.0 MB. Free memory was 172.1 MB in the beginning and 167.5 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1327.43 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 167.5 MB in the beginning and 189.8 MB in the end (delta: -22.3 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13520.08 ms. Allocated memory was 233.8 MB in the beginning and 460.8 MB in the end (delta: 227.0 MB). Free memory was 189.8 MB in the beginning and 117.1 MB in the end (delta: 72.7 MB). Peak memory consumption was 299.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 927]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L590] int pumpRunning = 0; [L591] int systemActive = 1; [L834] int waterLevel = 1; [L835] int methaneLevelCritical = 0; [L522] int retValue_acc ; [L523] int tmp ; [L527] FCALL select_helpers() [L528] FCALL select_features() [L529] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L529] RET, EXPR valid_product() [L529] tmp = valid_product() [L531] COND TRUE \read(tmp) [L533] FCALL setup() [L534] CALL runTest() [L516] CALL test() [L766] int splverifierCounter ; [L767] int tmp ; [L768] int tmp___0 ; [L769] int tmp___1 ; [L770] int tmp___2 ; [L773] splverifierCounter = 0 [L775] COND TRUE 1 [L777] COND TRUE splverifierCounter < 4 [L783] tmp = __VERIFIER_nondet_int() [L785] COND TRUE \read(tmp) [L787] CALL waterRise() [L852] COND TRUE waterLevel < 2 [L853] waterLevel = waterLevel + 1 [L787] RET waterRise() [L793] tmp___0 = __VERIFIER_nondet_int() [L795] COND FALSE !(\read(tmp___0)) [L803] tmp___2 = __VERIFIER_nondet_int() [L805] COND FALSE !(\read(tmp___2)) [L811] tmp___1 = __VERIFIER_nondet_int() [L813] COND TRUE \read(tmp___1) [L815] CALL stopSystem() [L745] COND FALSE !(\read(pumpRunning)) [L752] systemActive = 0 [L815] RET stopSystem() [L822] CALL timeShift() [L597] COND FALSE !(\read(pumpRunning)) [L604] COND FALSE !(\read(systemActive)) [L612] CALL __utac_acc__Specification3_spec__1() [L550] int tmp ; [L551] int tmp___0 ; [L552] int tmp___1 ; [L556] CALL, EXPR isMethaneLevelCritical() [L873] int retValue_acc ; [L876] retValue_acc = methaneLevelCritical [L877] return (retValue_acc); [L556] RET, EXPR isMethaneLevelCritical() [L556] tmp = isMethaneLevelCritical() [L558] COND FALSE !(\read(tmp)) [L562] CALL, EXPR getWaterLevel() [L905] int retValue_acc ; [L908] retValue_acc = waterLevel [L909] return (retValue_acc); [L562] RET, EXPR getWaterLevel() [L562] tmp___0 = getWaterLevel() [L564] COND TRUE tmp___0 == 2 [L566] CALL, EXPR isPumpRunning() [L678] int retValue_acc ; [L681] retValue_acc = pumpRunning [L682] return (retValue_acc); [L566] RET, EXPR isPumpRunning() [L566] tmp___1 = isPumpRunning() [L568] COND FALSE !(\read(tmp___1)) [L572] CALL __automaton_fail() [L927] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 533 SDtfs, 843 SDslu, 385 SDs, 0 SdLazy, 1890 SolverSat, 558 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=457occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 236 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 360 NumberOfCodeBlocks, 360 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 288 ConstructedInterpolants, 0 QuantifiedInterpolants, 82716 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...