/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_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:07:07,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:07:07,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:07:07,339 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:07:07,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:07:07,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:07:07,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:07:07,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:07:07,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:07:07,359 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:07:07,360 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:07:07,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:07:07,362 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:07:07,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:07:07,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:07:07,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:07:07,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:07:07,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:07:07,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:07:07,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:07:07,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:07:07,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:07:07,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:07:07,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:07:07,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:07:07,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:07:07,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:07:07,404 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:07:07,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:07:07,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:07:07,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:07:07,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:07:07,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:07:07,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:07:07,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:07:07,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:07:07,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:07:07,412 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:07:07,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:07:07,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:07:07,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:07:07,415 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 10:07:07,456 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:07:07,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:07:07,459 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:07:07,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:07:07,459 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:07:07,460 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:07:07,460 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:07:07,460 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:07:07,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:07:07,461 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:07:07,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:07:07,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:07:07,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:07:07,462 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:07:07,463 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:07:07,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:07:07,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:07:07,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:07:07,463 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:07:07,464 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:07:07,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:07:07,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:07:07,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:07:07,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:07:07,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:07:07,465 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:07:07,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:07:07,465 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:07:07,465 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:07:07,466 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 10:07:07,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:07:07,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:07:07,928 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:07:07,932 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:07:07,932 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:07:07,933 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2020-09-21 10:07:08,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4078c3ca0/8e298354a7814f01b5d40d9240d2ea3f/FLAGa56fe17a9 [2020-09-21 10:07:08,609 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:07:08,610 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2020-09-21 10:07:08,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4078c3ca0/8e298354a7814f01b5d40d9240d2ea3f/FLAGa56fe17a9 [2020-09-21 10:07:08,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4078c3ca0/8e298354a7814f01b5d40d9240d2ea3f [2020-09-21 10:07:08,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:07:08,919 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:07:08,922 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:07:08,922 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:07:08,927 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:07:08,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:07:08" (1/1) ... [2020-09-21 10:07:08,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@387f035d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:08, skipping insertion in model container [2020-09-21 10:07:08,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:07:08" (1/1) ... [2020-09-21 10:07:08,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:07:09,029 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:07:09,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:07:09,563 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:07:09,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:07:09,705 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:07:09,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:09 WrapperNode [2020-09-21 10:07:09,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:07:09,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:07:09,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:07:09,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:07:09,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:09" (1/1) ... [2020-09-21 10:07:09,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:09" (1/1) ... [2020-09-21 10:07:09,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:09" (1/1) ... [2020-09-21 10:07:09,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:09" (1/1) ... [2020-09-21 10:07:09,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:09" (1/1) ... [2020-09-21 10:07:09,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:09" (1/1) ... [2020-09-21 10:07:09,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:09" (1/1) ... [2020-09-21 10:07:09,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:07:09,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:07:09,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:07:09,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:07:09,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:09" (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 10:07:09,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:07:09,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:07:09,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:07:09,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:07:09,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:07:09,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:07:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:07:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:07:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:07:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:07:09,926 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:07:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:07:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:07:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:07:09,927 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:07:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 10:07:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:07:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:07:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:07:09,928 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-21 10:07:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:07:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:07:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:07:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:07:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:07:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:07:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 10:07:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:07:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:07:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:07:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:07:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:07:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:07:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:07:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:07:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:07:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 10:07:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:07:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:07:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:07:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:07:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:07:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:07:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:07:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:07:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:07:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:07:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:07:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:07:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:07:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:07:09,933 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:07:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:07:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:07:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:07:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:07:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:07:09,934 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:07:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:07:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:07:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:07:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:07:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:07:09,935 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 10:07:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:07:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:07:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:07:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:07:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:07:09,936 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:07:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:07:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:07:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 10:07:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:07:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-21 10:07:09,937 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 10:07:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:07:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:07:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:07:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:07:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:07:09,938 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:07:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:07:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:07:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:07:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:07:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:07:09,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:07:11,034 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:07:11,034 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:07:11,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:07:11 BoogieIcfgContainer [2020-09-21 10:07:11,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:07:11,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:07:11,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:07:11,045 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:07:11,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:07:08" (1/3) ... [2020-09-21 10:07:11,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d90efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:07:11, skipping insertion in model container [2020-09-21 10:07:11,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:07:09" (2/3) ... [2020-09-21 10:07:11,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d90efc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:07:11, skipping insertion in model container [2020-09-21 10:07:11,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:07:11" (3/3) ... [2020-09-21 10:07:11,050 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product17.cil.c [2020-09-21 10:07:11,063 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:07:11,077 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:07:11,101 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:07:11,135 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:07:11,135 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:07:11,135 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:07:11,136 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:07:11,136 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:07:11,136 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:07:11,136 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:07:11,136 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:07:11,162 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-09-21 10:07:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 10:07:11,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:11,176 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 10:07:11,176 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:11,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:11,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1926070200, now seen corresponding path program 1 times [2020-09-21 10:07:11,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:11,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801846876] [2020-09-21 10:07:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:11,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:11,977 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:11,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:12,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:12,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:12,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:12,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:12,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:12,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-21 10:07:12,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:12,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-09-21 10:07:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:12,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:07:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:12,095 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 10:07:12,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801846876] [2020-09-21 10:07:12,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:12,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 10:07:12,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307044888] [2020-09-21 10:07:12,113 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 10:07:12,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:12,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 10:07:12,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 10:07:12,135 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 3 states. [2020-09-21 10:07:13,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:13,188 INFO L93 Difference]: Finished difference Result 259 states and 341 transitions. [2020-09-21 10:07:13,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 10:07:13,190 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-09-21 10:07:13,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:13,208 INFO L225 Difference]: With dead ends: 259 [2020-09-21 10:07:13,208 INFO L226 Difference]: Without dead ends: 140 [2020-09-21 10:07:13,214 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 10:07:13,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-21 10:07:13,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2020-09-21 10:07:13,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-21 10:07:13,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions. [2020-09-21 10:07:13,304 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 52 [2020-09-21 10:07:13,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:13,305 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 128 transitions. [2020-09-21 10:07:13,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 10:07:13,306 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions. [2020-09-21 10:07:13,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-21 10:07:13,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:13,310 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 10:07:13,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:07:13,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:13,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:13,311 INFO L82 PathProgramCache]: Analyzing trace with hash 475112747, now seen corresponding path program 1 times [2020-09-21 10:07:13,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:13,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347401722] [2020-09-21 10:07:13,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:13,675 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:13,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:13,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:13,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:13,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:13,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:13,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-21 10:07:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:13,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:07:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:13,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:07:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:13,748 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 10:07:13,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347401722] [2020-09-21 10:07:13,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:13,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 10:07:13,749 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224417592] [2020-09-21 10:07:13,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 10:07:13,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:13,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 10:07:13,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 10:07:13,753 INFO L87 Difference]: Start difference. First operand 110 states and 128 transitions. Second operand 4 states. [2020-09-21 10:07:14,150 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 10:07:14,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:14,853 INFO L93 Difference]: Finished difference Result 192 states and 232 transitions. [2020-09-21 10:07:14,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 10:07:14,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-09-21 10:07:14,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:14,857 INFO L225 Difference]: With dead ends: 192 [2020-09-21 10:07:14,857 INFO L226 Difference]: Without dead ends: 124 [2020-09-21 10:07:14,859 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 [2020-09-21 10:07:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-21 10:07:14,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101. [2020-09-21 10:07:14,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-21 10:07:14,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-09-21 10:07:14,891 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 53 [2020-09-21 10:07:14,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:14,891 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-09-21 10:07:14,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 10:07:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-09-21 10:07:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-21 10:07:14,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:14,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:07:14,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:07:14,894 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:14,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:14,896 INFO L82 PathProgramCache]: Analyzing trace with hash 40226853, now seen corresponding path program 1 times [2020-09-21 10:07:14,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:14,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954811920] [2020-09-21 10:07:14,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:15,333 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:15,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:15,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:15,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:15,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:15,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:15,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:15,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 10:07:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:15,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-21 10:07:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:15,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:07:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:15,482 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 10:07:15,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954811920] [2020-09-21 10:07:15,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:15,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:07:15,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854949960] [2020-09-21 10:07:15,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:07:15,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:15,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:07:15,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:07:15,485 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 8 states. [2020-09-21 10:07:15,907 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:16,297 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:16,608 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:16,891 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:17,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:17,882 INFO L93 Difference]: Finished difference Result 201 states and 246 transitions. [2020-09-21 10:07:17,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:07:17,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-09-21 10:07:17,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:17,887 INFO L225 Difference]: With dead ends: 201 [2020-09-21 10:07:17,887 INFO L226 Difference]: Without dead ends: 124 [2020-09-21 10:07:17,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 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 10:07:17,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-21 10:07:17,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101. [2020-09-21 10:07:17,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-21 10:07:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2020-09-21 10:07:17,919 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 57 [2020-09-21 10:07:17,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:17,919 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2020-09-21 10:07:17,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:07:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2020-09-21 10:07:17,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-21 10:07:17,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:17,922 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 10:07:17,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:07:17,922 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:17,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:17,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1164680110, now seen corresponding path program 1 times [2020-09-21 10:07:17,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:17,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81462711] [2020-09-21 10:07:17,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:18,306 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:18,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:18,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:18,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:18,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:18,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:18,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:18,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-21 10:07:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:18,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:07:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:18,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-21 10:07:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:18,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 10:07:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:18,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-21 10:07:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:18,420 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 10:07:18,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81462711] [2020-09-21 10:07:18,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:18,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:07:18,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180832568] [2020-09-21 10:07:18,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:07:18,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:18,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:07:18,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:07:18,423 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 8 states. [2020-09-21 10:07:18,803 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:20,109 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:20,492 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:20,839 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-21 10:07:21,150 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:21,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:21,789 INFO L93 Difference]: Finished difference Result 299 states and 390 transitions. [2020-09-21 10:07:21,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 10:07:21,791 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-09-21 10:07:21,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:21,795 INFO L225 Difference]: With dead ends: 299 [2020-09-21 10:07:21,795 INFO L226 Difference]: Without dead ends: 222 [2020-09-21 10:07:21,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-09-21 10:07:21,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-09-21 10:07:21,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 176. [2020-09-21 10:07:21,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-21 10:07:21,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 207 transitions. [2020-09-21 10:07:21,845 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 207 transitions. Word has length 65 [2020-09-21 10:07:21,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:21,845 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 207 transitions. [2020-09-21 10:07:21,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:07:21,846 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 207 transitions. [2020-09-21 10:07:21,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-21 10:07:21,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:21,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:07:21,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:07:21,850 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:21,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:21,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1251292780, now seen corresponding path program 1 times [2020-09-21 10:07:21,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:21,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509223171] [2020-09-21 10:07:21,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:21,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,250 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-21 10:07:22,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:07:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:07:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 10:07:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 10:07:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 10:07:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-21 10:07:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 10:07:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-21 10:07:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-09-21 10:07:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-21 10:07:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-21 10:07:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:07:22,352 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 10:07:22,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509223171] [2020-09-21 10:07:22,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:07:22,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:07:22,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213069000] [2020-09-21 10:07:22,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:07:22,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:07:22,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:07:22,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:07:22,355 INFO L87 Difference]: Start difference. First operand 176 states and 207 transitions. Second operand 6 states. [2020-09-21 10:07:22,719 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-21 10:07:23,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:07:23,302 INFO L93 Difference]: Finished difference Result 289 states and 355 transitions. [2020-09-21 10:07:23,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:07:23,303 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-09-21 10:07:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:07:23,304 INFO L225 Difference]: With dead ends: 289 [2020-09-21 10:07:23,305 INFO L226 Difference]: Without dead ends: 137 [2020-09-21 10:07:23,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:07:23,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-21 10:07:23,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2020-09-21 10:07:23,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-21 10:07:23,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2020-09-21 10:07:23,339 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 69 [2020-09-21 10:07:23,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:07:23,339 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2020-09-21 10:07:23,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:07:23,339 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2020-09-21 10:07:23,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-21 10:07:23,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:07:23,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:07:23,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:07:23,342 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:07:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:07:23,343 INFO L82 PathProgramCache]: Analyzing trace with hash 558485620, now seen corresponding path program 1 times [2020-09-21 10:07:23,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:07:23,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703990786] [2020-09-21 10:07:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:07:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:07:23,416 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:07:23,416 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:07:23,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:07:23,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:07:23 BoogieIcfgContainer [2020-09-21 10:07:23,457 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:07:23,461 INFO L168 Benchmark]: Toolchain (without parser) took 14544.72 ms. Allocated memory was 141.0 MB in the beginning and 430.4 MB in the end (delta: 289.4 MB). Free memory was 103.4 MB in the beginning and 151.1 MB in the end (delta: -47.7 MB). Peak memory consumption was 241.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:23,462 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-21 10:07:23,469 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.38 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 175.3 MB in the end (delta: -72.7 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:23,470 INFO L168 Benchmark]: Boogie Preprocessor took 129.54 ms. Allocated memory is still 205.0 MB. Free memory was 175.3 MB in the beginning and 170.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:23,471 INFO L168 Benchmark]: RCFGBuilder took 1203.99 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 170.4 MB in the beginning and 197.8 MB in the end (delta: -27.4 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:23,472 INFO L168 Benchmark]: TraceAbstraction took 12415.75 ms. Allocated memory was 235.4 MB in the beginning and 430.4 MB in the end (delta: 195.0 MB). Free memory was 196.1 MB in the beginning and 151.1 MB in the end (delta: 45.0 MB). Peak memory consumption was 240.0 MB. Max. memory is 7.1 GB. [2020-09-21 10:07:23,484 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 784.38 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 102.5 MB in the beginning and 175.3 MB in the end (delta: -72.7 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.54 ms. Allocated memory is still 205.0 MB. Free memory was 175.3 MB in the beginning and 170.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1203.99 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 170.4 MB in the beginning and 197.8 MB in the end (delta: -27.4 MB). Peak memory consumption was 82.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12415.75 ms. Allocated memory was 235.4 MB in the beginning and 430.4 MB in the end (delta: 195.0 MB). Free memory was 196.1 MB in the beginning and 151.1 MB in the end (delta: 45.0 MB). Peak memory consumption was 240.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L413] int waterLevel = 1; [L414] int methaneLevelCritical = 0; [L582] int pumpRunning = 0; [L583] int systemActive = 1; [L735] int cleanupTimeShifts = 4; [L811] int retValue_acc ; [L812] int tmp ; [L816] FCALL select_helpers() [L817] FCALL select_features() [L818] CALL, EXPR valid_product() [L860] int retValue_acc ; [L863] retValue_acc = 1 [L864] return (retValue_acc); [L818] RET, EXPR valid_product() [L818] tmp = valid_product() [L820] COND TRUE \read(tmp) [L822] FCALL setup() [L823] CALL runTest() [L802] CALL test() [L514] int splverifierCounter ; [L515] int tmp ; [L516] int tmp___0 ; [L517] int tmp___1 ; [L518] int tmp___2 ; [L521] splverifierCounter = 0 [L523] COND TRUE 1 [L525] COND TRUE splverifierCounter < 4 [L531] tmp = __VERIFIER_nondet_int() [L533] COND TRUE \read(tmp) [L535] CALL waterRise() [L431] COND TRUE waterLevel < 2 [L432] waterLevel = waterLevel + 1 [L535] RET waterRise() [L541] tmp___0 = __VERIFIER_nondet_int() [L543] COND FALSE !(\read(tmp___0)) [L551] tmp___2 = __VERIFIER_nondet_int() [L553] COND TRUE \read(tmp___2) [L566] CALL timeShift() [L590] COND FALSE !(\read(pumpRunning)) [L597] COND TRUE \read(systemActive) [L599] CALL processEnvironment() [L619] int tmp ; [L622] COND FALSE !(\read(pumpRunning)) [L637] FCALL processEnvironment__wrappee__base() [L599] RET processEnvironment() [L605] CALL __utac_acc__Specification3_spec__1() [L870] int tmp ; [L871] int tmp___0 ; [L872] int tmp___1 ; [L876] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L876] RET, EXPR isMethaneLevelCritical() [L876] tmp = isMethaneLevelCritical() [L878] COND FALSE !(\read(tmp)) [L882] CALL, EXPR getWaterLevel() [L484] int retValue_acc ; [L487] retValue_acc = waterLevel [L488] return (retValue_acc); [L882] RET, EXPR getWaterLevel() [L882] tmp___0 = getWaterLevel() [L884] COND TRUE tmp___0 == 2 [L886] CALL, EXPR isPumpRunning() [L671] int retValue_acc ; [L674] retValue_acc = pumpRunning [L675] return (retValue_acc); [L886] RET, EXPR isPumpRunning() [L886] tmp___1 = isPumpRunning() [L888] COND FALSE !(\read(tmp___1)) [L892] CALL __automaton_fail() [L506] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 217 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 12.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 445 SDtfs, 684 SDslu, 248 SDs, 0 SdLazy, 1325 SolverSat, 410 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred 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: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 134 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 365 NumberOfCodeBlocks, 365 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 291 ConstructedInterpolants, 0 QuantifiedInterpolants, 82382 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...