/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:40:46,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:40:46,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:40:46,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:40:46,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:40:46,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:40:46,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:40:46,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:40:46,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:40:46,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:40:46,612 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:40:46,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:40:46,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:40:46,614 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:40:46,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:40:46,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:40:46,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:40:46,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:40:46,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:40:46,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:40:46,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:40:46,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:40:46,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:40:46,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:40:46,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 10:40:46,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 10:40:46,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 10:40:46,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 10:40:46,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 10:40:46,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 10:40:46,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 10:40:46,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 10:40:46,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 10:40:46,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 10:40:46,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 10:40:46,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 10:40:46,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 10:40:46,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 10:40:46,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:40:46,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:40:46,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:40:46,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 10:40:46,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:40:46,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:40:46,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:40:46,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:40:46,653 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:40:46,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:40:46,654 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:40:46,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:40:46,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:40:46,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:40:46,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:40:46,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:40:46,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:40:46,655 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:40:46,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:40:46,655 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:40:46,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:40:46,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:40:46,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:40:46,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:40:46,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:40:46,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:40:46,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:40:46,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:40:46,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:40:46,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:40:46,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:46,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:40:46,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:40:46,658 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 10:40:46,934 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:40:46,945 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:40:46,949 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:40:46,950 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:40:46,950 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:40:46,951 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-07-20 10:40:47,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfd9f1101/ada0155b4b924eff8653a079ac53fd37/FLAG5b9b3dd87 [2020-07-20 10:40:47,528 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:40:47,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product55.cil.c [2020-07-20 10:40:47,543 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfd9f1101/ada0155b4b924eff8653a079ac53fd37/FLAG5b9b3dd87 [2020-07-20 10:40:47,774 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfd9f1101/ada0155b4b924eff8653a079ac53fd37 [2020-07-20 10:40:47,782 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:40:47,784 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:40:47,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:40:47,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:40:47,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:40:47,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:40:47" (1/1) ... [2020-07-20 10:40:47,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d7251a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:47, skipping insertion in model container [2020-07-20 10:40:47,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:40:47" (1/1) ... [2020-07-20 10:40:47,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:40:47,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:40:48,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:40:48,350 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:40:48,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:40:48,467 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:40:48,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:48 WrapperNode [2020-07-20 10:40:48,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:40:48,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:40:48,469 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:40:48,469 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:40:48,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:48" (1/1) ... [2020-07-20 10:40:48,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:48" (1/1) ... [2020-07-20 10:40:48,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:48" (1/1) ... [2020-07-20 10:40:48,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:48" (1/1) ... [2020-07-20 10:40:48,535 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:48" (1/1) ... [2020-07-20 10:40:48,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:48" (1/1) ... [2020-07-20 10:40:48,550 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:48" (1/1) ... [2020-07-20 10:40:48,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:40:48,559 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:40:48,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:40:48,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:40:48,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 10:40:48,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:40:48,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:40:48,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-07-20 10:40:48,623 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-07-20 10:40:48,623 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-07-20 10:40:48,623 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-07-20 10:40:48,624 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-07-20 10:40:48,624 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-07-20 10:40:48,625 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-07-20 10:40:48,625 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-07-20 10:40:48,625 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 10:40:48,625 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-20 10:40:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-07-20 10:40:48,626 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-07-20 10:40:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-07-20 10:40:48,627 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-07-20 10:40:48,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-07-20 10:40:48,628 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-07-20 10:40:48,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-07-20 10:40:48,628 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-07-20 10:40:48,629 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-07-20 10:40:48,629 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-07-20 10:40:48,629 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-07-20 10:40:48,629 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-07-20 10:40:48,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-07-20 10:40:48,631 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-07-20 10:40:48,632 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-07-20 10:40:48,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-07-20 10:40:48,632 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-07-20 10:40:48,632 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-07-20 10:40:48,632 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-07-20 10:40:48,632 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-07-20 10:40:48,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-07-20 10:40:48,633 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-07-20 10:40:48,633 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:40:48,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-07-20 10:40:48,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-07-20 10:40:48,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-07-20 10:40:48,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-07-20 10:40:48,633 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-07-20 10:40:48,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-07-20 10:40:48,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-07-20 10:40:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:40:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 10:40:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-20 10:40:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-07-20 10:40:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-07-20 10:40:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-07-20 10:40:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-07-20 10:40:48,634 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-07-20 10:40:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-07-20 10:40:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-07-20 10:40:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-07-20 10:40:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-07-20 10:40:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-07-20 10:40:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-07-20 10:40:48,635 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-07-20 10:40:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-07-20 10:40:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-07-20 10:40:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-07-20 10:40:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-07-20 10:40:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-07-20 10:40:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-07-20 10:40:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-07-20 10:40:48,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-07-20 10:40:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-07-20 10:40:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-07-20 10:40:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-07-20 10:40:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-07-20 10:40:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-07-20 10:40:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-07-20 10:40:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-07-20 10:40:48,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:40:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-07-20 10:40:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-07-20 10:40:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-07-20 10:40:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-07-20 10:40:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-07-20 10:40:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:40:48,638 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-07-20 10:40:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 10:40:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 10:40:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-07-20 10:40:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 10:40:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 10:40:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:40:48,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 10:40:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-07-20 10:40:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:40:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-07-20 10:40:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-07-20 10:40:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:40:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-07-20 10:40:48,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-07-20 10:40:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-07-20 10:40:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:40:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 10:40:48,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:40:49,724 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:40:49,724 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-20 10:40:49,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:40:49 BoogieIcfgContainer [2020-07-20 10:40:49,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:40:49,736 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:40:49,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:40:49,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:40:49,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:40:47" (1/3) ... [2020-07-20 10:40:49,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c93e99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:40:49, skipping insertion in model container [2020-07-20 10:40:49,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:40:48" (2/3) ... [2020-07-20 10:40:49,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c93e99e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:40:49, skipping insertion in model container [2020-07-20 10:40:49,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:40:49" (3/3) ... [2020-07-20 10:40:49,744 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product55.cil.c [2020-07-20 10:40:49,755 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:40:49,764 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:40:49,778 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:40:49,810 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:40:49,810 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:40:49,810 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:40:49,811 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:40:49,812 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:40:49,812 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:40:49,812 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:40:49,813 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:40:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2020-07-20 10:40:49,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 10:40:49,854 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:49,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:49,855 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:49,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:49,862 INFO L82 PathProgramCache]: Analyzing trace with hash 616057763, now seen corresponding path program 1 times [2020-07-20 10:40:49,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:49,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271540800] [2020-07-20 10:40:49,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:50,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:40:50,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:50,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:50,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271540800] [2020-07-20 10:40:50,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:50,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:40:50,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277754948] [2020-07-20 10:40:50,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:40:50,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:50,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:40:50,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:40:50,182 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 2 states. [2020-07-20 10:40:50,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:50,239 INFO L93 Difference]: Finished difference Result 298 states and 373 transitions. [2020-07-20 10:40:50,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:40:50,241 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2020-07-20 10:40:50,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:50,257 INFO L225 Difference]: With dead ends: 298 [2020-07-20 10:40:50,257 INFO L226 Difference]: Without dead ends: 149 [2020-07-20 10:40:50,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:40:50,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-07-20 10:40:50,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-07-20 10:40:50,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-07-20 10:40:50,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 178 transitions. [2020-07-20 10:40:50,334 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 178 transitions. Word has length 46 [2020-07-20 10:40:50,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:50,335 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 178 transitions. [2020-07-20 10:40:50,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:40:50,335 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 178 transitions. [2020-07-20 10:40:50,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-20 10:40:50,339 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:50,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:50,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:50,554 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:50,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:50,555 INFO L82 PathProgramCache]: Analyzing trace with hash -2016430514, now seen corresponding path program 1 times [2020-07-20 10:40:50,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:50,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142886078] [2020-07-20 10:40:50,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:50,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-20 10:40:50,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:50,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:50,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142886078] [2020-07-20 10:40:50,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:50,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:40:50,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777468911] [2020-07-20 10:40:50,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:40:50,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:50,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:40:50,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:50,802 INFO L87 Difference]: Start difference. First operand 149 states and 178 transitions. Second operand 3 states. [2020-07-20 10:40:50,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:50,826 INFO L93 Difference]: Finished difference Result 241 states and 287 transitions. [2020-07-20 10:40:50,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:40:50,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2020-07-20 10:40:50,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:50,829 INFO L225 Difference]: With dead ends: 241 [2020-07-20 10:40:50,829 INFO L226 Difference]: Without dead ends: 140 [2020-07-20 10:40:50,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:50,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-07-20 10:40:50,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-07-20 10:40:50,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-20 10:40:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 166 transitions. [2020-07-20 10:40:50,849 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 166 transitions. Word has length 47 [2020-07-20 10:40:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:50,849 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 166 transitions. [2020-07-20 10:40:50,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:40:50,850 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 166 transitions. [2020-07-20 10:40:50,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 10:40:50,852 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:50,852 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:51,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:51,068 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:51,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:51,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1603631393, now seen corresponding path program 1 times [2020-07-20 10:40:51,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:51,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542477549] [2020-07-20 10:40:51,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:51,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 10:40:51,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:51,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:51,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:51,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542477549] [2020-07-20 10:40:51,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:51,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:40:51,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817203263] [2020-07-20 10:40:51,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:40:51,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:51,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:40:51,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:51,321 INFO L87 Difference]: Start difference. First operand 140 states and 166 transitions. Second operand 3 states. [2020-07-20 10:40:51,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:51,371 INFO L93 Difference]: Finished difference Result 370 states and 450 transitions. [2020-07-20 10:40:51,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:40:51,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-07-20 10:40:51,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:51,377 INFO L225 Difference]: With dead ends: 370 [2020-07-20 10:40:51,377 INFO L226 Difference]: Without dead ends: 254 [2020-07-20 10:40:51,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:51,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-07-20 10:40:51,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 250. [2020-07-20 10:40:51,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-07-20 10:40:51,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 303 transitions. [2020-07-20 10:40:51,412 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 303 transitions. Word has length 51 [2020-07-20 10:40:51,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:51,413 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 303 transitions. [2020-07-20 10:40:51,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:40:51,413 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 303 transitions. [2020-07-20 10:40:51,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-20 10:40:51,416 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:51,416 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] [2020-07-20 10:40:51,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:51,631 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:51,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:51,632 INFO L82 PathProgramCache]: Analyzing trace with hash -1180849517, now seen corresponding path program 1 times [2020-07-20 10:40:51,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:51,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816698589] [2020-07-20 10:40:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:51,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 677 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 10:40:51,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:51,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:51,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:51,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816698589] [2020-07-20 10:40:51,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:51,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:40:51,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581994914] [2020-07-20 10:40:51,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:40:51,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:51,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:40:51,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:40:51,907 INFO L87 Difference]: Start difference. First operand 250 states and 303 transitions. Second operand 6 states. [2020-07-20 10:40:52,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:52,215 INFO L93 Difference]: Finished difference Result 594 states and 755 transitions. [2020-07-20 10:40:52,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 10:40:52,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2020-07-20 10:40:52,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:52,220 INFO L225 Difference]: With dead ends: 594 [2020-07-20 10:40:52,221 INFO L226 Difference]: Without dead ends: 368 [2020-07-20 10:40:52,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 10:40:52,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2020-07-20 10:40:52,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 358. [2020-07-20 10:40:52,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 358 states. [2020-07-20 10:40:52,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 437 transitions. [2020-07-20 10:40:52,295 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 437 transitions. Word has length 57 [2020-07-20 10:40:52,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:52,296 INFO L479 AbstractCegarLoop]: Abstraction has 358 states and 437 transitions. [2020-07-20 10:40:52,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:40:52,298 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 437 transitions. [2020-07-20 10:40:52,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-07-20 10:40:52,304 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:52,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:52,511 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:52,512 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:52,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:52,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1036169484, now seen corresponding path program 1 times [2020-07-20 10:40:52,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:52,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890536835] [2020-07-20 10:40:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:52,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 729 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-20 10:40:52,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:52,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:52,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:52,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890536835] [2020-07-20 10:40:52,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:52,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:40:52,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805198037] [2020-07-20 10:40:52,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:40:52,781 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:52,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:40:52,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:40:52,781 INFO L87 Difference]: Start difference. First operand 358 states and 437 transitions. Second operand 6 states. [2020-07-20 10:40:53,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:53,044 INFO L93 Difference]: Finished difference Result 1007 states and 1263 transitions. [2020-07-20 10:40:53,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 10:40:53,044 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-07-20 10:40:53,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:53,051 INFO L225 Difference]: With dead ends: 1007 [2020-07-20 10:40:53,052 INFO L226 Difference]: Without dead ends: 673 [2020-07-20 10:40:53,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-07-20 10:40:53,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2020-07-20 10:40:53,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 665. [2020-07-20 10:40:53,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 665 states. [2020-07-20 10:40:53,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 818 transitions. [2020-07-20 10:40:53,141 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 818 transitions. Word has length 84 [2020-07-20 10:40:53,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:53,142 INFO L479 AbstractCegarLoop]: Abstraction has 665 states and 818 transitions. [2020-07-20 10:40:53,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:40:53,142 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 818 transitions. [2020-07-20 10:40:53,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-20 10:40:53,144 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:53,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:53,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:53,358 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:53,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:53,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1185420344, now seen corresponding path program 1 times [2020-07-20 10:40:53,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:53,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632517780] [2020-07-20 10:40:53,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:53,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:53,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 10:40:53,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:53,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:53,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:53,560 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632517780] [2020-07-20 10:40:53,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:53,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 10:40:53,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943519684] [2020-07-20 10:40:53,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 10:40:53,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:53,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 10:40:53,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 10:40:53,562 INFO L87 Difference]: Start difference. First operand 665 states and 818 transitions. Second operand 6 states. [2020-07-20 10:40:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:53,614 INFO L93 Difference]: Finished difference Result 1326 states and 1668 transitions. [2020-07-20 10:40:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 10:40:53,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-07-20 10:40:53,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:53,620 INFO L225 Difference]: With dead ends: 1326 [2020-07-20 10:40:53,620 INFO L226 Difference]: Without dead ends: 685 [2020-07-20 10:40:53,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 10:40:53,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-07-20 10:40:53,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 685. [2020-07-20 10:40:53,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 685 states. [2020-07-20 10:40:53,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 838 transitions. [2020-07-20 10:40:53,664 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 838 transitions. Word has length 88 [2020-07-20 10:40:53,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:53,664 INFO L479 AbstractCegarLoop]: Abstraction has 685 states and 838 transitions. [2020-07-20 10:40:53,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 10:40:53,665 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 838 transitions. [2020-07-20 10:40:53,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-20 10:40:53,667 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:53,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:53,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:53,881 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:53,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:53,882 INFO L82 PathProgramCache]: Analyzing trace with hash -910660730, now seen corresponding path program 1 times [2020-07-20 10:40:53,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:53,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [373442699] [2020-07-20 10:40:53,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:54,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 10:40:54,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:54,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:54,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:54,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [373442699] [2020-07-20 10:40:54,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:54,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 10:40:54,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802412097] [2020-07-20 10:40:54,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 10:40:54,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:54,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 10:40:54,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:40:54,098 INFO L87 Difference]: Start difference. First operand 685 states and 838 transitions. Second operand 5 states. [2020-07-20 10:40:54,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:54,135 INFO L93 Difference]: Finished difference Result 1374 states and 1752 transitions. [2020-07-20 10:40:54,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 10:40:54,136 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-07-20 10:40:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:54,142 INFO L225 Difference]: With dead ends: 1374 [2020-07-20 10:40:54,142 INFO L226 Difference]: Without dead ends: 713 [2020-07-20 10:40:54,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 10:40:54,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2020-07-20 10:40:54,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 701. [2020-07-20 10:40:54,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-07-20 10:40:54,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 854 transitions. [2020-07-20 10:40:54,204 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 854 transitions. Word has length 88 [2020-07-20 10:40:54,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:54,205 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 854 transitions. [2020-07-20 10:40:54,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 10:40:54,205 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 854 transitions. [2020-07-20 10:40:54,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-07-20 10:40:54,209 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:54,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:54,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:54,425 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:54,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:54,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1039639525, now seen corresponding path program 1 times [2020-07-20 10:40:54,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:54,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145665621] [2020-07-20 10:40:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:40:54,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 10:40:54,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:40:54,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 10:40:54,637 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:40:54,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145665621] [2020-07-20 10:40:54,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:40:54,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 10:40:54,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582673704] [2020-07-20 10:40:54,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 10:40:54,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:40:54,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 10:40:54,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:54,639 INFO L87 Difference]: Start difference. First operand 701 states and 854 transitions. Second operand 3 states. [2020-07-20 10:40:54,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:40:54,698 INFO L93 Difference]: Finished difference Result 1971 states and 2554 transitions. [2020-07-20 10:40:54,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 10:40:54,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2020-07-20 10:40:54,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:40:54,707 INFO L225 Difference]: With dead ends: 1971 [2020-07-20 10:40:54,707 INFO L226 Difference]: Without dead ends: 1294 [2020-07-20 10:40:54,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 10:40:54,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2020-07-20 10:40:54,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1291. [2020-07-20 10:40:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1291 states. [2020-07-20 10:40:54,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1618 transitions. [2020-07-20 10:40:54,776 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1618 transitions. Word has length 88 [2020-07-20 10:40:54,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:40:54,776 INFO L479 AbstractCegarLoop]: Abstraction has 1291 states and 1618 transitions. [2020-07-20 10:40:54,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 10:40:54,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1618 transitions. [2020-07-20 10:40:54,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-07-20 10:40:54,780 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:40:54,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:40:54,992 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:54,993 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:40:54,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:40:54,994 INFO L82 PathProgramCache]: Analyzing trace with hash 745790239, now seen corresponding path program 1 times [2020-07-20 10:40:54,994 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:40:54,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945847920] [2020-07-20 10:40:54,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:40:55,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:40:55,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:40:55,300 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:40:55,546 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:40:55,546 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:40:55,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:40:55,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:40:55 BoogieIcfgContainer [2020-07-20 10:40:55,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:40:55,933 INFO L168 Benchmark]: Toolchain (without parser) took 8145.38 ms. Allocated memory was 137.4 MB in the beginning and 327.7 MB in the end (delta: 190.3 MB). Free memory was 100.9 MB in the beginning and 280.9 MB in the end (delta: -180.0 MB). Peak memory consumption was 174.9 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:55,933 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 10:40:55,934 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.17 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 100.5 MB in the beginning and 171.4 MB in the end (delta: -71.0 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:55,937 INFO L168 Benchmark]: Boogie Preprocessor took 89.28 ms. Allocated memory is still 202.4 MB. Free memory was 171.4 MB in the beginning and 167.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:55,938 INFO L168 Benchmark]: RCFGBuilder took 1175.46 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 167.2 MB in the beginning and 195.3 MB in the end (delta: -28.2 MB). Peak memory consumption was 86.8 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:55,938 INFO L168 Benchmark]: TraceAbstraction took 6191.32 ms. Allocated memory was 233.3 MB in the beginning and 327.7 MB in the end (delta: 94.4 MB). Free memory was 195.3 MB in the beginning and 280.9 MB in the end (delta: -85.6 MB). Peak memory consumption was 173.4 MB. Max. memory is 7.1 GB. [2020-07-20 10:40:55,947 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 683.17 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 100.5 MB in the beginning and 171.4 MB in the end (delta: -71.0 MB). Peak memory consumption was 29.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.28 ms. Allocated memory is still 202.4 MB. Free memory was 171.4 MB in the beginning and 167.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1175.46 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 167.2 MB in the beginning and 195.3 MB in the end (delta: -28.2 MB). Peak memory consumption was 86.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6191.32 ms. Allocated memory was 233.3 MB in the beginning and 327.7 MB in the end (delta: 94.4 MB). Free memory was 195.3 MB in the beginning and 280.9 MB in the end (delta: -85.6 MB). Peak memory consumption was 173.4 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: [L159] int pumpRunning = 0; [L160] int systemActive = 1; [L399] int waterLevel = 1; [L400] int methaneLevelCritical = 0; [L511] int cleanupTimeShifts = 4; [L802] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; VAL [\old(cleanupTimeShifts)=40, \old(head)=14, \old(head)=54, \old(methaneLevelCritical)=29, \old(pumpRunning)=37, \old(systemActive)=51, \old(waterLevel)=15, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L584] int retValue_acc ; [L585] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L589] FCALL select_helpers() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L590] FCALL select_features() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L591] CALL, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, retValue_acc=1, systemActive=1, waterLevel=1] [L591] RET, EXPR valid_product() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, valid_product()=1, waterLevel=1] [L591] tmp = valid_product() [L593] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L595] FCALL setup() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, tmp=1, waterLevel=1] [L596] CALL runTest() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L578] CALL test() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L84] int splverifierCounter ; [L85] int tmp ; [L86] int tmp___0 ; [L87] int tmp___1 ; [L88] int tmp___2 ; [L91] splverifierCounter = 0 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L93] COND TRUE 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L95] COND TRUE splverifierCounter < 4 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, waterLevel=1] [L101] tmp = __VERIFIER_nondet_int() [L103] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=1] [L105] CALL waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L417] COND TRUE waterLevel < 2 [L418] waterLevel = waterLevel + 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L105] RET waterRise() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, waterLevel=2] [L111] tmp___0 = __VERIFIER_nondet_int() [L113] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L115] CALL changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L429] COND FALSE !(\read(methaneLevelCritical)) [L432] methaneLevelCritical = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L115] RET changeMethaneLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, waterLevel=2] [L121] tmp___2 = __VERIFIER_nondet_int() [L123] COND TRUE \read(tmp___2) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, splverifierCounter=0, systemActive=1, tmp=1, tmp___0=-1, tmp___2=1, waterLevel=2] [L138] CALL timeShift() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L167] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L174] COND TRUE \read(systemActive) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L176] CALL processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L248] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L251] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L266] CALL processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L222] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L225] COND FALSE !(\read(pumpRunning)) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L240] CALL processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L196] int tmp ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L199] COND TRUE ! pumpRunning VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L201] CALL, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L345] int retValue_acc ; [L346] int tmp ; [L347] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L351] CALL, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L479] int retValue_acc ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L482] COND FALSE !(waterLevel < 2) [L486] retValue_acc = 0 [L487] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=0, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=0, systemActive=1, waterLevel=2] [L351] RET, EXPR isHighWaterSensorDry() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterSensorDry()=0, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L351] tmp = isHighWaterSensorDry() [L353] COND FALSE !(\read(tmp)) [L356] tmp___0 = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L358] retValue_acc = tmp___0 [L359] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, retValue_acc=1, systemActive=1, tmp=0, tmp___0=1, waterLevel=2] [L201] RET, EXPR isHighWaterLevel() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isHighWaterLevel()=1, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L201] tmp = isHighWaterLevel() [L203] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, tmp=1, waterLevel=2] [L205] CALL activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=0, systemActive=1, waterLevel=2] [L276] pumpRunning = 1 VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L205] RET activatePump() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L240] RET processEnvironment__wrappee__highWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L266] RET processEnvironment__wrappee__lowWaterSensor() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L176] RET processEnvironment() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L182] CALL __utac_acc__Specification1_spec__1() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L608] int tmp ; [L609] int tmp___0 ; VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L613] CALL, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L438] int retValue_acc ; [L441] retValue_acc = methaneLevelCritical [L442] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L613] RET, EXPR isMethaneLevelCritical() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isMethaneLevelCritical()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L613] tmp = isMethaneLevelCritical() [L615] COND TRUE \read(tmp) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L617] CALL, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L300] int retValue_acc ; [L303] retValue_acc = pumpRunning [L304] return (retValue_acc); VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, \result=1, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, retValue_acc=1, systemActive=1, waterLevel=2] [L617] RET, EXPR isPumpRunning() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, isPumpRunning()=1, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, waterLevel=2] [L617] tmp___0 = isPumpRunning() [L619] COND TRUE \read(tmp___0) VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, tmp=1, tmp___0=1, waterLevel=2] [L621] CALL __automaton_fail() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L506] __VERIFIER_error() VAL [\old(methaneLevelCritical)=0, \old(pumpRunning)=0, \old(systemActive)=1, \old(waterLevel)=2, cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 251 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.9s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1458 SDtfs, 447 SDslu, 2725 SDs, 0 SdLazy, 219 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 546 GetRequests, 522 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1291occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 37 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 641 NumberOfCodeBlocks, 641 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 541 ConstructedInterpolants, 0 QuantifiedInterpolants, 68373 SizeOfPredicates, 20 NumberOfNonLiveVariables, 5578 ConjunctsInSsa, 71 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...