/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 15:17:54,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:17:54,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:17:54,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:17:54,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:17:54,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:17:54,599 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:17:54,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:17:54,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:17:54,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:17:54,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:17:54,609 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:17:54,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:17:54,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:17:54,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:17:54,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:17:54,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:17:54,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:17:54,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:17:54,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:17:54,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:17:54,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:17:54,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:17:54,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:17:54,650 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 15:17:54,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 15:17:54,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 15:17:54,651 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 15:17:54,652 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 15:17:54,653 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 15:17:54,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:17:54,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:17:54,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:17:54,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:17:54,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:17:54,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:17:54,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:17:54,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:17:54,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:17:54,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:17:54,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:17:54,662 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 15:17:54,688 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:17:54,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:17:54,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:17:54,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:17:54,690 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:17:54,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:17:54,690 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:17:54,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:17:54,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:17:54,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:17:54,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:17:54,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:17:54,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:17:54,691 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:17:54,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:17:54,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:17:54,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:17:54,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:17:54,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:17:54,692 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:17:54,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:17:54,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:17:54,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:17:54,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:17:54,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:17:54,694 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:17:54,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:17:54,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:17:54,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:17:54,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 15:17:54,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:17:54,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:17:54,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:17:54,998 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:17:54,999 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:17:55,000 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c [2020-08-18 15:17:55,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ceca0982d/2d3fff7b333a4ae7bd0386b085913bf7/FLAG199b5f30e [2020-08-18 15:17:55,669 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:17:55,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product06.cil.c [2020-08-18 15:17:55,683 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ceca0982d/2d3fff7b333a4ae7bd0386b085913bf7/FLAG199b5f30e [2020-08-18 15:17:55,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ceca0982d/2d3fff7b333a4ae7bd0386b085913bf7 [2020-08-18 15:17:55,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:17:55,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:17:55,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:17:55,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:17:55,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:17:55,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:17:55" (1/1) ... [2020-08-18 15:17:55,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b6cecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:17:55, skipping insertion in model container [2020-08-18 15:17:55,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:17:55" (1/1) ... [2020-08-18 15:17:55,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:17:55,988 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:17:56,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:17:56,461 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:17:56,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:17:56,583 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:17:56,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:17:56 WrapperNode [2020-08-18 15:17:56,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:17:56,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:17:56,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:17:56,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:17:56,596 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:17:56" (1/1) ... [2020-08-18 15:17:56,596 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:17:56" (1/1) ... [2020-08-18 15:17:56,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:17:56" (1/1) ... [2020-08-18 15:17:56,615 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:17:56" (1/1) ... [2020-08-18 15:17:56,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:17:56" (1/1) ... [2020-08-18 15:17:56,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:17:56" (1/1) ... [2020-08-18 15:17:56,661 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:17:56" (1/1) ... [2020-08-18 15:17:56,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:17:56,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:17:56,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:17:56,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:17:56,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:17:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:17:56,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:17:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:17:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 15:17:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 15:17:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 15:17:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 15:17:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 15:17:56,740 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 15:17:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 15:17:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 15:17:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 15:17:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 15:17:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 15:17:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 15:17:56,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 15:17:56,742 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 15:17:56,742 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 15:17:56,742 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 15:17:56,742 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 15:17:56,742 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 15:17:56,742 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 15:17:56,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 15:17:56,743 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 15:17:56,743 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 15:17:56,743 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 15:17:56,743 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 15:17:56,743 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 15:17:56,743 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 15:17:56,744 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:17:56,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 15:17:56,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 15:17:56,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 15:17:56,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 15:17:56,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 15:17:56,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 15:17:56,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 15:17:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:17:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 15:17:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 15:17:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 15:17:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 15:17:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 15:17:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 15:17:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 15:17:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 15:17:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 15:17:56,746 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 15:17:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 15:17:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 15:17:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 15:17:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 15:17:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 15:17:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 15:17:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 15:17:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 15:17:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 15:17:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 15:17:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:17:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 15:17:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 15:17:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 15:17:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 15:17:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 15:17:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 15:17:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 15:17:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 15:17:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:17:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 15:17:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 15:17:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 15:17:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 15:17:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 15:17:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 15:17:56,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:17:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 15:17:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 15:17:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:17:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 15:17:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 15:17:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:17:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 15:17:56,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 15:17:56,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 15:17:56,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:17:56,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 15:17:56,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:17:57,744 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:17:57,744 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 15:17:57,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:17:57 BoogieIcfgContainer [2020-08-18 15:17:57,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:17:57,755 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:17:57,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:17:57,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:17:57,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:17:55" (1/3) ... [2020-08-18 15:17:57,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b39135b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:17:57, skipping insertion in model container [2020-08-18 15:17:57,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:17:56" (2/3) ... [2020-08-18 15:17:57,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b39135b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:17:57, skipping insertion in model container [2020-08-18 15:17:57,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:17:57" (3/3) ... [2020-08-18 15:17:57,764 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product06.cil.c [2020-08-18 15:17:57,774 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:17:57,782 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:17:57,795 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:17:57,825 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:17:57,826 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:17:57,826 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:17:57,826 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:17:57,826 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:17:57,827 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:17:57,827 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:17:57,827 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:17:57,857 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2020-08-18 15:17:57,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 15:17:57,867 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:17:57,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:17:57,868 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:17:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:17:57,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1057158692, now seen corresponding path program 1 times [2020-08-18 15:17:57,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:17:57,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509205183] [2020-08-18 15:17:57,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:17:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:58,527 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:17:58,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:17:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:58,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:17:58,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:58,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:17:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:58,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:17:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:58,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:17:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:58,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 15:17:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:58,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:17:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:58,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 15:17:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:17:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:17:58,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509205183] [2020-08-18 15:17:58,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:17:58,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 15:17:58,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619826578] [2020-08-18 15:17:58,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 15:17:58,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:17:58,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 15:17:58,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:17:58,647 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2020-08-18 15:17:59,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:17:59,769 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-18 15:17:59,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:17:59,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 15:17:59,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:17:59,786 INFO L225 Difference]: With dead ends: 258 [2020-08-18 15:17:59,786 INFO L226 Difference]: Without dead ends: 140 [2020-08-18 15:17:59,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 15:17:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-18 15:17:59,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-18 15:17:59,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-18 15:17:59,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-18 15:17:59,876 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 52 [2020-08-18 15:17:59,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:17:59,876 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-18 15:17:59,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 15:17:59,877 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-18 15:17:59,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 15:17:59,880 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:17:59,881 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:17:59,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:17:59,881 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:17:59,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:17:59,882 INFO L82 PathProgramCache]: Analyzing trace with hash -1710283751, now seen corresponding path program 1 times [2020-08-18 15:17:59,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:17:59,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001850767] [2020-08-18 15:17:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:17:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:00,209 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:00,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:00,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:18:00,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:00,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:18:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:00,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:18:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:00,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:18:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:00,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 15:18:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:00,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:18:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:00,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 15:18:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:00,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:18:00,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001850767] [2020-08-18 15:18:00,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:18:00,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:18:00,281 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083960505] [2020-08-18 15:18:00,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:18:00,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:18:00,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:18:00,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:18:00,284 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-18 15:18:00,746 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 15:18:01,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:18:01,415 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-18 15:18:01,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 15:18:01,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 15:18:01,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:18:01,425 INFO L225 Difference]: With dead ends: 187 [2020-08-18 15:18:01,425 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 15:18:01,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:18:01,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 15:18:01,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-18 15:18:01,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 15:18:01,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-18 15:18:01,476 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 53 [2020-08-18 15:18:01,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:18:01,476 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-18 15:18:01,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:18:01,477 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-18 15:18:01,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 15:18:01,479 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:01,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:18:01,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:18:01,480 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:01,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:01,480 INFO L82 PathProgramCache]: Analyzing trace with hash -830709307, now seen corresponding path program 1 times [2020-08-18 15:18:01,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:01,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261659267] [2020-08-18 15:18:01,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:01,805 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:01,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:01,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:18:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:01,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:18:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:01,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:18:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:01,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:18:01,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:01,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 15:18:01,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:01,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 15:18:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:01,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 15:18:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:01,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:18:01,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261659267] [2020-08-18 15:18:01,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:18:01,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:18:01,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172059508] [2020-08-18 15:18:01,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:18:01,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:18:01,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:18:01,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:18:01,928 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-18 15:18:02,336 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:18:02,643 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:02,899 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:03,166 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:04,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:18:04,142 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-18 15:18:04,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 15:18:04,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 15:18:04,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:18:04,146 INFO L225 Difference]: With dead ends: 200 [2020-08-18 15:18:04,147 INFO L226 Difference]: Without dead ends: 124 [2020-08-18 15:18:04,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 15:18:04,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-18 15:18:04,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-18 15:18:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-18 15:18:04,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-18 15:18:04,182 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 58 [2020-08-18 15:18:04,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:18:04,183 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-18 15:18:04,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:18:04,183 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-18 15:18:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-18 15:18:04,185 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:04,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 15:18:04,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 15:18:04,185 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:04,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:04,186 INFO L82 PathProgramCache]: Analyzing trace with hash -1834721556, now seen corresponding path program 1 times [2020-08-18 15:18:04,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:04,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956528373] [2020-08-18 15:18:04,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:04,485 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:04,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:04,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:18:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:04,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:18:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:04,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:18:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:04,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:18:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 15:18:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:04,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:18:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:04,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-18 15:18:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:04,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 15:18:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:04,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-18 15:18:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:04,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:18:04,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956528373] [2020-08-18 15:18:04,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:18:04,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 15:18:04,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803110426] [2020-08-18 15:18:04,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 15:18:04,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:18:04,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 15:18:04,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 15:18:04,604 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 8 states. [2020-08-18 15:18:04,958 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:18:06,328 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:06,647 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:06,884 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 15:18:07,271 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:18:07,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:18:07,581 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2020-08-18 15:18:07,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 15:18:07,582 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-08-18 15:18:07,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:18:07,586 INFO L225 Difference]: With dead ends: 299 [2020-08-18 15:18:07,587 INFO L226 Difference]: Without dead ends: 223 [2020-08-18 15:18:07,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-18 15:18:07,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-08-18 15:18:07,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 174. [2020-08-18 15:18:07,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-08-18 15:18:07,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 205 transitions. [2020-08-18 15:18:07,654 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 205 transitions. Word has length 66 [2020-08-18 15:18:07,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:18:07,654 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 205 transitions. [2020-08-18 15:18:07,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 15:18:07,656 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 205 transitions. [2020-08-18 15:18:07,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 15:18:07,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:07,662 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] [2020-08-18 15:18:07,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 15:18:07,662 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:07,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:07,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1027907532, now seen corresponding path program 1 times [2020-08-18 15:18:07,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:07,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170800328] [2020-08-18 15:18:07,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:08,019 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 15:18:08,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:18:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:08,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:18:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:08,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 15:18:08,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:08,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 15:18:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:08,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 15:18:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:08,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 15:18:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:08,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 15:18:08,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:08,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 15:18:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:08,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 15:18:08,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:08,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-18 15:18:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:08,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-18 15:18:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:08,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-18 15:18:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:18:08,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:18:08,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170800328] [2020-08-18 15:18:08,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:18:08,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 15:18:08,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030620185] [2020-08-18 15:18:08,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 15:18:08,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:18:08,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 15:18:08,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 15:18:08,165 INFO L87 Difference]: Start difference. First operand 174 states and 205 transitions. Second operand 6 states. [2020-08-18 15:18:08,483 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 15:18:09,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:18:09,041 INFO L93 Difference]: Finished difference Result 296 states and 363 transitions. [2020-08-18 15:18:09,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 15:18:09,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 74 [2020-08-18 15:18:09,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:18:09,044 INFO L225 Difference]: With dead ends: 296 [2020-08-18 15:18:09,044 INFO L226 Difference]: Without dead ends: 146 [2020-08-18 15:18:09,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-18 15:18:09,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-18 15:18:09,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133. [2020-08-18 15:18:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-18 15:18:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2020-08-18 15:18:09,100 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 74 [2020-08-18 15:18:09,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:18:09,100 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2020-08-18 15:18:09,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 15:18:09,101 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2020-08-18 15:18:09,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 15:18:09,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:18:09,102 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] [2020-08-18 15:18:09,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 15:18:09,102 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:18:09,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:18:09,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1882239654, now seen corresponding path program 1 times [2020-08-18 15:18:09,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:18:09,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062112906] [2020-08-18 15:18:09,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:18:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:18:09,160 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:18:09,160 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:18:09,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 15:18:09,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:18:09 BoogieIcfgContainer [2020-08-18 15:18:09,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:18:09,200 INFO L168 Benchmark]: Toolchain (without parser) took 13273.64 ms. Allocated memory was 139.5 MB in the beginning and 459.8 MB in the end (delta: 320.3 MB). Free memory was 100.5 MB in the beginning and 402.3 MB in the end (delta: -301.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:09,201 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 15:18:09,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 657.23 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.3 MB in the beginning and 172.5 MB in the end (delta: -72.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:09,204 INFO L168 Benchmark]: Boogie Preprocessor took 83.94 ms. Allocated memory is still 203.4 MB. Free memory was 172.5 MB in the beginning and 168.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:09,207 INFO L168 Benchmark]: RCFGBuilder took 1084.36 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 201.7 MB in the end (delta: -33.5 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:09,209 INFO L168 Benchmark]: TraceAbstraction took 11442.89 ms. Allocated memory was 236.5 MB in the beginning and 459.8 MB in the end (delta: 223.3 MB). Free memory was 201.7 MB in the beginning and 402.3 MB in the end (delta: -200.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-18 15:18:09,218 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 119.8 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 657.23 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.3 MB in the beginning and 172.5 MB in the end (delta: -72.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.94 ms. Allocated memory is still 203.4 MB. Free memory was 172.5 MB in the beginning and 168.2 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1084.36 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 168.2 MB in the beginning and 201.7 MB in the end (delta: -33.5 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11442.89 ms. Allocated memory was 236.5 MB in the beginning and 459.8 MB in the end (delta: 223.3 MB). Free memory was 201.7 MB in the beginning and 402.3 MB in the end (delta: -200.6 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L96] int pumpRunning = 0; [L97] int systemActive = 1; [L309] int waterLevel = 1; [L310] int methaneLevelCritical = 0; [L389] int cleanupTimeShifts = 4; [L654] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L462] int retValue_acc ; [L463] int tmp ; [L467] FCALL select_helpers() [L468] FCALL select_features() [L469] CALL, EXPR valid_product() [L78] int retValue_acc ; [L81] retValue_acc = 1 [L82] return (retValue_acc); [L469] RET, EXPR valid_product() [L469] tmp = valid_product() [L471] COND TRUE \read(tmp) [L473] FCALL setup() [L474] CALL runTest() [L456] CALL test() [L242] int splverifierCounter ; [L243] int tmp ; [L244] int tmp___0 ; [L245] int tmp___1 ; [L246] int tmp___2 ; [L249] splverifierCounter = 0 [L251] COND TRUE 1 [L253] COND TRUE splverifierCounter < 4 [L259] tmp = __VERIFIER_nondet_int() [L261] COND TRUE \read(tmp) [L263] CALL waterRise() [L327] COND TRUE waterLevel < 2 [L328] waterLevel = waterLevel + 1 [L263] RET waterRise() [L269] tmp___0 = __VERIFIER_nondet_int() [L271] COND FALSE !(\read(tmp___0)) [L279] tmp___2 = __VERIFIER_nondet_int() [L281] COND FALSE !(\read(tmp___2)) [L287] tmp___1 = __VERIFIER_nondet_int() [L289] COND TRUE \read(tmp___1) [L296] CALL timeShift() [L104] COND FALSE !(\read(pumpRunning)) [L111] COND TRUE \read(systemActive) [L113] CALL processEnvironment() [L133] int tmp ; [L136] COND FALSE !(\read(pumpRunning)) [L151] FCALL processEnvironment__wrappee__base() [L113] RET processEnvironment() [L119] CALL __utac_acc__Specification3_spec__1() [L852] int tmp ; [L853] int tmp___0 ; [L854] int tmp___1 ; [L858] CALL, EXPR isMethaneLevelCritical() [L348] int retValue_acc ; [L351] retValue_acc = methaneLevelCritical [L352] return (retValue_acc); [L858] RET, EXPR isMethaneLevelCritical() [L858] tmp = isMethaneLevelCritical() [L860] COND FALSE !(\read(tmp)) [L864] CALL, EXPR getWaterLevel() [L380] int retValue_acc ; [L383] retValue_acc = waterLevel [L384] return (retValue_acc); [L864] RET, EXPR getWaterLevel() [L864] tmp___0 = getWaterLevel() [L866] COND TRUE tmp___0 == 2 [L868] CALL, EXPR isPumpRunning() [L185] int retValue_acc ; [L188] retValue_acc = pumpRunning [L189] return (retValue_acc); [L868] RET, EXPR isPumpRunning() [L868] tmp___1 = isPumpRunning() [L870] COND FALSE !(\read(tmp___1)) [L874] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 211 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 445 SDtfs, 658 SDslu, 240 SDs, 0 SdLazy, 1341 SolverSat, 451 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 137 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 141 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 373 NumberOfCodeBlocks, 373 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 298 ConstructedInterpolants, 0 QuantifiedInterpolants, 85738 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...