/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_product10.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:06:57,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:06:57,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:06:58,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:06:58,039 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:06:58,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:06:58,052 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:06:58,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:06:58,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:06:58,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:06:58,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:06:58,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:06:58,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:06:58,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:06:58,070 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:06:58,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:06:58,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:06:58,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:06:58,077 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:06:58,086 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:06:58,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:06:58,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:06:58,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:06:58,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:06:58,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:06:58,108 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:06:58,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:06:58,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:06:58,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:06:58,114 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:06:58,114 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:06:58,115 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:06:58,116 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:06:58,117 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:06:58,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:06:58,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:06:58,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:06:58,120 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:06:58,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:06:58,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:06:58,122 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:06:58,123 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 [2020-09-21 10:06:58,149 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:06:58,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:06:58,151 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:06:58,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:06:58,151 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:06:58,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:06:58,152 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:06:58,152 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:06:58,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:06:58,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:06:58,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:06:58,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:06:58,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:06:58,153 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:06:58,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:06:58,154 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:06:58,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:06:58,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:06:58,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:06:58,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:06:58,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:06:58,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:06:58,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:06:58,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:06:58,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:06:58,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:06:58,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:06:58,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:06:58,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:06:58,157 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 [2020-09-21 10:06:58,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:06:58,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:06:58,619 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:06:58,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:06:58,621 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:06:58,622 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product10.cil.c [2020-09-21 10:06:58,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2c7d581d/5f674498990640068c198b38a27aba49/FLAGb5148893a [2020-09-21 10:06:59,358 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:06:59,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product10.cil.c [2020-09-21 10:06:59,378 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2c7d581d/5f674498990640068c198b38a27aba49/FLAGb5148893a [2020-09-21 10:06:59,614 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2c7d581d/5f674498990640068c198b38a27aba49 [2020-09-21 10:06:59,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:06:59,631 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:06:59,632 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:06:59,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:06:59,637 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:06:59,638 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:06:59" (1/1) ... [2020-09-21 10:06:59,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27030054 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:06:59, skipping insertion in model container [2020-09-21 10:06:59,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:06:59" (1/1) ... [2020-09-21 10:06:59,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:06:59,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:07:00,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:07:00,097 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:07:00,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:07:00,319 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:07:00,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:00 WrapperNode [2020-09-21 10:07:00,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:07:00,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:07:00,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:07:00,322 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:07:00,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:00" (1/1) ... [2020-09-21 10:07:00,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:00" (1/1) ... [2020-09-21 10:07:00,357 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:00" (1/1) ... [2020-09-21 10:07:00,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:00" (1/1) ... [2020-09-21 10:07:00,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:00" (1/1) ... [2020-09-21 10:07:00,401 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:00" (1/1) ... [2020-09-21 10:07:00,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:00" (1/1) ... [2020-09-21 10:07:00,416 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:07:00,417 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:07:00,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:07:00,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:07:00,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:00" (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 [2020-09-21 10:07:00,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:07:00,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:07:00,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:07:00,495 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:07:00,495 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:07:00,496 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:07:00,496 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:07:00,496 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:07:00,496 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:07:00,496 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:07:00,497 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:07:00,497 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:07:00,497 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:07:00,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:07:00,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:07:00,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:07:00,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:07:00,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:07:00,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:07:00,499 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:07:00,499 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:07:00,499 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:07:00,499 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:07:00,499 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-09-21 10:07:00,500 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:07:00,500 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:07:00,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:07:00,500 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:07:00,500 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:07:00,500 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 10:07:00,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 10:07:00,501 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:07:00,501 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:07:00,501 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:07:00,501 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:07:00,502 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:07:00,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:07:00,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:07:00,502 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:07:00,502 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:07:00,502 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:07:00,503 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:07:00,503 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:07:00,503 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:07:00,503 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:07:00,503 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:07:00,503 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:07:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:07:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:07:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:07:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:07:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:07:00,504 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:07:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:07:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:07:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:07:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:07:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:07:00,505 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:07:00,506 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:07:00,506 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:07:00,506 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:07:00,506 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:07:00,506 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:07:00,507 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:07:00,507 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:07:00,507 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:07:00,507 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 10:07:00,507 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:07:00,507 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:07:00,507 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:07:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:07:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:07:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:07:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:07:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 10:07:00,508 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:07:00,509 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-09-21 10:07:00,509 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:07:00,509 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:07:00,509 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:07:00,509 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:07:00,509 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:07:00,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:07:00,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:07:00,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:07:01,605 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:07:01,605 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:07:01,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:07:01 BoogieIcfgContainer [2020-09-21 10:07:01,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:07:01,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:07:01,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:07:01,617 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:07:01,617 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:06:59" (1/3) ... [2020-09-21 10:07:01,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef1f043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:07:01, skipping insertion in model container [2020-09-21 10:07:01,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:00" (2/3) ... [2020-09-21 10:07:01,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ef1f043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:07:01, skipping insertion in model container [2020-09-21 10:07:01,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:07:01" (3/3) ... [2020-09-21 10:07:01,621 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product10.cil.c [2020-09-21 10:07:01,633 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:07:01,644 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:07:01,667 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:07:01,700 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:07:01,700 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:07:01,700 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:07:01,700 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:07:01,701 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:07:01,701 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:07:01,701 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:07:01,701 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:07:01,728 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states. [2020-09-21 10:07:01,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:07:01,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:01,741 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] [2020-09-21 10:07:01,742 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:01,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:01,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1414244218, now seen corresponding path program 1 times [2020-09-21 10:07:01,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:01,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065124642] [2020-09-21 10:07:01,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:02,516 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:02,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:02,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:02,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:02,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:02,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:02,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:02,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:07:02,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:02,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:07:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:02,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:07:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:02,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:07:02,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065124642] [2020-09-21 10:07:02,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:02,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:07:02,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239987576] [2020-09-21 10:07:02,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:07:02,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:02,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:07:02,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:07:02,669 INFO L87 Difference]: Start difference. First operand 145 states. Second operand 3 states. [2020-09-21 10:07:03,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:03,609 INFO L93 Difference]: Finished difference Result 220 states and 294 transitions. [2020-09-21 10:07:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:07:03,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 10:07:03,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:03,629 INFO L225 Difference]: With dead ends: 220 [2020-09-21 10:07:03,629 INFO L226 Difference]: Without dead ends: 120 [2020-09-21 10:07:03,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:07:03,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-09-21 10:07:03,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 91. [2020-09-21 10:07:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-21 10:07:03,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2020-09-21 10:07:03,738 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 52 [2020-09-21 10:07:03,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:03,739 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2020-09-21 10:07:03,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:07:03,739 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2020-09-21 10:07:03,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 10:07:03,743 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:03,743 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] [2020-09-21 10:07:03,743 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:07:03,744 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:03,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:03,744 INFO L82 PathProgramCache]: Analyzing trace with hash -803860910, now seen corresponding path program 1 times [2020-09-21 10:07:03,745 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:03,745 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991693301] [2020-09-21 10:07:03,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:03,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:04,113 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:04,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:04,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:04,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:04,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:04,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:04,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:04,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:04,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:07:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:04,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:07:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:04,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:07:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:07:04,175 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991693301] [2020-09-21 10:07:04,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:04,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:07:04,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114428668] [2020-09-21 10:07:04,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:07:04,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:04,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:07:04,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:07:04,179 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand 4 states. [2020-09-21 10:07:04,638 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:07:05,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:05,206 INFO L93 Difference]: Finished difference Result 149 states and 181 transitions. [2020-09-21 10:07:05,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:07:05,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 10:07:05,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:05,211 INFO L225 Difference]: With dead ends: 149 [2020-09-21 10:07:05,211 INFO L226 Difference]: Without dead ends: 104 [2020-09-21 10:07:05,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:07:05,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-21 10:07:05,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2020-09-21 10:07:05,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-21 10:07:05,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2020-09-21 10:07:05,249 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 53 [2020-09-21 10:07:05,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:05,250 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2020-09-21 10:07:05,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:07:05,250 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2020-09-21 10:07:05,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 10:07:05,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:05,252 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] [2020-09-21 10:07:05,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:07:05,253 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:05,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:05,253 INFO L82 PathProgramCache]: Analyzing trace with hash 9396391, now seen corresponding path program 1 times [2020-09-21 10:07:05,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:05,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191170053] [2020-09-21 10:07:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:05,736 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:05,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:05,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:05,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:05,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:05,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:05,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:05,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:05,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:07:05,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:05,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:07:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:05,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:07:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:05,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:07:05,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191170053] [2020-09-21 10:07:05,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:05,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:07:05,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721314357] [2020-09-21 10:07:05,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:07:05,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:05,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:07:05,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:07:05,900 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 8 states. [2020-09-21 10:07:06,316 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:06,672 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:06,993 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:07,302 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:08,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:08,187 INFO L93 Difference]: Finished difference Result 162 states and 199 transitions. [2020-09-21 10:07:08,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:07:08,187 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-09-21 10:07:08,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:08,189 INFO L225 Difference]: With dead ends: 162 [2020-09-21 10:07:08,190 INFO L226 Difference]: Without dead ends: 104 [2020-09-21 10:07:08,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:07:08,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-21 10:07:08,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2020-09-21 10:07:08,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-09-21 10:07:08,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-09-21 10:07:08,218 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 58 [2020-09-21 10:07:08,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:08,219 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-09-21 10:07:08,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:07:08,219 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-09-21 10:07:08,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 10:07:08,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:08,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:07:08,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:07:08,221 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:08,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:08,221 INFO L82 PathProgramCache]: Analyzing trace with hash 446188768, now seen corresponding path program 1 times [2020-09-21 10:07:08,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:08,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166333907] [2020-09-21 10:07:08,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:08,561 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:08,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:08,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:08,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:08,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:08,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:08,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 10:07:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:08,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 10:07:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:08,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-21 10:07:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:08,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-21 10:07:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:08,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:07:08,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1166333907] [2020-09-21 10:07:08,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:08,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:07:08,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750732177] [2020-09-21 10:07:08,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:07:08,657 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:08,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:07:08,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:07:08,658 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 7 states. [2020-09-21 10:07:09,031 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:10,052 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:10,424 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:10,742 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:11,031 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:11,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:11,375 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2020-09-21 10:07:11,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:07:11,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-09-21 10:07:11,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:11,378 INFO L225 Difference]: With dead ends: 209 [2020-09-21 10:07:11,378 INFO L226 Difference]: Without dead ends: 151 [2020-09-21 10:07:11,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:07:11,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-21 10:07:11,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2020-09-21 10:07:11,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-21 10:07:11,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2020-09-21 10:07:11,422 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 61 [2020-09-21 10:07:11,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:11,422 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2020-09-21 10:07:11,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:07:11,422 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2020-09-21 10:07:11,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 10:07:11,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:11,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:07:11,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:07:11,425 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:11,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:11,426 INFO L82 PathProgramCache]: Analyzing trace with hash 236169914, now seen corresponding path program 1 times [2020-09-21 10:07:11,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:11,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799158762] [2020-09-21 10:07:11,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:11,761 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:11,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:11,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:11,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:11,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:11,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:11,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:11,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 10:07:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:11,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-21 10:07:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:11,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:07:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:11,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 10:07:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:11,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-21 10:07:11,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:07:11,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799158762] [2020-09-21 10:07:11,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:11,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:07:11,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265880804] [2020-09-21 10:07:11,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:07:11,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:11,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:07:11,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:07:11,867 INFO L87 Difference]: Start difference. First operand 136 states and 158 transitions. Second operand 5 states. [2020-09-21 10:07:12,190 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:12,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:12,769 INFO L93 Difference]: Finished difference Result 205 states and 247 transitions. [2020-09-21 10:07:12,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:07:12,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-09-21 10:07:12,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:12,772 INFO L225 Difference]: With dead ends: 205 [2020-09-21 10:07:12,772 INFO L226 Difference]: Without dead ends: 136 [2020-09-21 10:07:12,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:07:12,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-21 10:07:12,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 123. [2020-09-21 10:07:12,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-21 10:07:12,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 138 transitions. [2020-09-21 10:07:12,805 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 138 transitions. Word has length 65 [2020-09-21 10:07:12,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:12,806 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 138 transitions. [2020-09-21 10:07:12,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:07:12,806 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 138 transitions. [2020-09-21 10:07:12,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 10:07:12,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:12,808 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] [2020-09-21 10:07:12,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:07:12,808 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:12,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:12,809 INFO L82 PathProgramCache]: Analyzing trace with hash 993675046, now seen corresponding path program 1 times [2020-09-21 10:07:12,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:12,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915728869] [2020-09-21 10:07:12,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:07:12,884 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:07:12,884 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:07:12,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:07:12,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:07:12 BoogieIcfgContainer [2020-09-21 10:07:12,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:07:12,917 INFO L168 Benchmark]: Toolchain (without parser) took 13289.16 ms. Allocated memory was 140.0 MB in the beginning and 426.8 MB in the end (delta: 286.8 MB). Free memory was 102.2 MB in the beginning and 107.7 MB in the end (delta: -5.6 MB). Peak memory consumption was 281.2 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:12,918 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:07:12,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.49 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 174.9 MB in the end (delta: -73.3 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:12,920 INFO L168 Benchmark]: Boogie Preprocessor took 95.23 ms. Allocated memory is still 203.9 MB. Free memory was 174.9 MB in the beginning and 170.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:12,921 INFO L168 Benchmark]: RCFGBuilder took 1194.78 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 170.4 MB in the beginning and 203.0 MB in the end (delta: -32.5 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:12,922 INFO L168 Benchmark]: TraceAbstraction took 11302.55 ms. Allocated memory was 236.5 MB in the beginning and 426.8 MB in the end (delta: 190.3 MB). Free memory was 203.0 MB in the beginning and 107.7 MB in the end (delta: 95.3 MB). Peak memory consumption was 285.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:12,926 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 688.49 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 174.9 MB in the end (delta: -73.3 MB). Peak memory consumption was 27.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 95.23 ms. Allocated memory is still 203.9 MB. Free memory was 174.9 MB in the beginning and 170.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1194.78 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 170.4 MB in the beginning and 203.0 MB in the end (delta: -32.5 MB). Peak memory consumption was 85.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11302.55 ms. Allocated memory was 236.5 MB in the beginning and 426.8 MB in the end (delta: 190.3 MB). Free memory was 203.0 MB in the beginning and 107.7 MB in the end (delta: 95.3 MB). Peak memory consumption was 285.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 168]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L84] int waterLevel = 1; [L85] int methaneLevelCritical = 0; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L613] int pumpRunning = 0; [L614] int systemActive = 1; [L781] int cleanupTimeShifts = 4; [L854] int retValue_acc ; [L855] int tmp ; [L859] FCALL select_helpers() [L860] FCALL select_features() [L861] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L861] RET, EXPR valid_product() [L861] tmp = valid_product() [L863] COND TRUE \read(tmp) [L865] FCALL setup() [L866] CALL runTest() [L848] CALL test() [L543] int splverifierCounter ; [L544] int tmp ; [L545] int tmp___0 ; [L546] int tmp___1 ; [L547] int tmp___2 ; [L550] splverifierCounter = 0 [L552] COND TRUE 1 [L554] COND TRUE splverifierCounter < 4 [L560] tmp = __VERIFIER_nondet_int() [L562] COND TRUE \read(tmp) [L564] CALL waterRise() [L102] COND TRUE waterLevel < 2 [L103] waterLevel = waterLevel + 1 [L564] RET waterRise() [L570] tmp___0 = __VERIFIER_nondet_int() [L572] COND FALSE !(\read(tmp___0)) [L580] tmp___2 = __VERIFIER_nondet_int() [L582] COND FALSE !(\read(tmp___2)) [L588] tmp___1 = __VERIFIER_nondet_int() [L590] COND FALSE !(\read(tmp___1)) [L597] CALL timeShift() [L621] COND FALSE !(\read(pumpRunning)) [L628] COND TRUE \read(systemActive) [L630] FCALL processEnvironment() [L636] CALL __utac_acc__Specification3_spec__1() [L748] int tmp ; [L749] int tmp___0 ; [L750] int tmp___1 ; [L754] CALL, EXPR isMethaneLevelCritical() [L123] int retValue_acc ; [L126] retValue_acc = methaneLevelCritical [L127] return (retValue_acc); [L754] RET, EXPR isMethaneLevelCritical() [L754] tmp = isMethaneLevelCritical() [L756] COND FALSE !(\read(tmp)) [L760] CALL, EXPR getWaterLevel() [L155] int retValue_acc ; [L158] retValue_acc = waterLevel [L159] return (retValue_acc); [L760] RET, EXPR getWaterLevel() [L760] tmp___0 = getWaterLevel() [L762] COND TRUE tmp___0 == 2 [L764] CALL, EXPR isPumpRunning() [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); [L764] RET, EXPR isPumpRunning() [L764] tmp___1 = isPumpRunning() [L766] COND FALSE !(\read(tmp___1)) [L770] CALL __automaton_fail() [L168] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 208 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 386 SDtfs, 474 SDslu, 214 SDs, 0 SdLazy, 1003 SolverSat, 275 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 4.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 101 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 354 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 79940 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...