/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 true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:48:09,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:48:09,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:48:09,625 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:48:09,626 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:48:09,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:48:09,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:48:09,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:48:09,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:48:09,646 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:48:09,647 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:48:09,648 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:48:09,648 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:48:09,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:48:09,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:48:09,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:48:09,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:48:09,654 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:48:09,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:48:09,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:48:09,665 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:48:09,667 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:48:09,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:48:09,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:48:09,675 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:48:09,675 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:48:09,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:48:09,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:48:09,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:48:09,681 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:48:09,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:48:09,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:48:09,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:48:09,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:48:09,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:48:09,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:48:09,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:48:09,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:48:09,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:48:09,686 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:48:09,687 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:48:09,688 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 [2020-08-19 05:48:09,729 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:48:09,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:48:09,732 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:48:09,732 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:48:09,732 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:48:09,733 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:48:09,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:48:09,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:48:09,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:48:09,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:48:09,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:48:09,735 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:48:09,735 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:48:09,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:48:09,736 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:48:09,736 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:48:09,736 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:48:09,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:48:09,736 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:48:09,736 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:48:09,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:48:09,737 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:48:09,737 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:48:09,737 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:48:09,737 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:48:09,738 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:48:09,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:48:09,738 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:48:09,738 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:48:09,738 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 05:48:10,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:48:10,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:48:10,042 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:48:10,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:48:10,044 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:48:10,045 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-08-19 05:48:10,107 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2fab87e4/720e3676465349c99e60890e703a78a3/FLAGc905e2a1b [2020-08-19 05:48:10,616 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:48:10,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product36.cil.c [2020-08-19 05:48:10,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2fab87e4/720e3676465349c99e60890e703a78a3/FLAGc905e2a1b [2020-08-19 05:48:10,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f2fab87e4/720e3676465349c99e60890e703a78a3 [2020-08-19 05:48:10,945 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:48:10,947 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:48:10,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:48:10,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:48:10,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:48:10,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:48:10" (1/1) ... [2020-08-19 05:48:10,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@190b9cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:10, skipping insertion in model container [2020-08-19 05:48:10,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:48:10" (1/1) ... [2020-08-19 05:48:10,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:48:11,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:48:11,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:48:11,450 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:48:11,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:48:11,584 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:48:11,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:11 WrapperNode [2020-08-19 05:48:11,584 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:48:11,585 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:48:11,585 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:48:11,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:48:11,599 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:11" (1/1) ... [2020-08-19 05:48:11,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:11" (1/1) ... [2020-08-19 05:48:11,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:11" (1/1) ... [2020-08-19 05:48:11,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:11" (1/1) ... [2020-08-19 05:48:11,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:11" (1/1) ... [2020-08-19 05:48:11,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:11" (1/1) ... [2020-08-19 05:48:11,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:11" (1/1) ... [2020-08-19 05:48:11,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:48:11,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:48:11,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:48:11,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:48:11,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:11" (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 [2020-08-19 05:48:11,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:48:11,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:48:11,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:48:11,736 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:48:11,736 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:48:11,737 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:48:11,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:48:11,737 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:48:11,737 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:48:11,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 05:48:11,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:48:11,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:48:11,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:48:11,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:48:11,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:48:11,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:48:11,740 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:48:11,740 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:48:11,740 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:48:11,740 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:48:11,741 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:48:11,741 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:48:11,741 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:48:11,741 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:48:11,743 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:48:11,743 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:48:11,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:48:11,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:48:11,744 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:48:11,744 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:48:11,744 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:48:11,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:48:11,745 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:48:11,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 05:48:11,745 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 05:48:11,745 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 05:48:11,745 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:48:11,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:48:11,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 05:48:11,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 05:48:11,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:48:11,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:48:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:48:11,748 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:48:11,749 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:48:11,750 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:48:11,750 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:48:11,750 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:48:11,750 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:48:11,750 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 05:48:11,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:48:11,750 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:48:11,751 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:48:11,751 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:48:11,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:48:11,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:48:11,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:48:11,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:48:11,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:48:11,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:48:11,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:48:11,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:48:11,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:48:11,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:48:11,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:48:11,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:48:11,753 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:48:11,753 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:48:11,753 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:48:11,753 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:48:11,754 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:48:11,754 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:48:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:48:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:48:11,755 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:48:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:48:11,756 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 05:48:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:48:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:48:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:48:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:48:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:48:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:48:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 05:48:11,757 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 05:48:11,758 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 05:48:11,758 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:48:11,758 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:48:11,758 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 05:48:11,758 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:48:11,758 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:48:11,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:48:11,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:48:11,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:48:12,785 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:48:12,785 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:48:12,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:48:12 BoogieIcfgContainer [2020-08-19 05:48:12,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:48:12,792 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:48:12,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:48:12,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:48:12,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:48:10" (1/3) ... [2020-08-19 05:48:12,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c568b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:48:12, skipping insertion in model container [2020-08-19 05:48:12,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:48:11" (2/3) ... [2020-08-19 05:48:12,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c568b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:48:12, skipping insertion in model container [2020-08-19 05:48:12,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:48:12" (3/3) ... [2020-08-19 05:48:12,800 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product36.cil.c [2020-08-19 05:48:12,813 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:48:12,821 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:48:12,835 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:48:12,860 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:48:12,860 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:48:12,860 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:48:12,860 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:48:12,861 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:48:12,861 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:48:12,861 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:48:12,861 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:48:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states. [2020-08-19 05:48:12,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 05:48:12,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:12,895 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] [2020-08-19 05:48:12,896 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:12,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:12,903 INFO L82 PathProgramCache]: Analyzing trace with hash 171708589, now seen corresponding path program 1 times [2020-08-19 05:48:12,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:12,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856611800] [2020-08-19 05:48:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:13,636 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:13,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:13,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:13,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:13,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:13,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:13,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:13,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:13,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:13,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:48:13,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:13,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 05:48:13,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:13,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:48:13,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856611800] [2020-08-19 05:48:13,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:13,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:48:13,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315617240] [2020-08-19 05:48:13,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:48:13,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:13,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:48:13,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:48:13,772 INFO L87 Difference]: Start difference. First operand 169 states. Second operand 4 states. [2020-08-19 05:48:15,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:15,051 INFO L93 Difference]: Finished difference Result 279 states and 365 transitions. [2020-08-19 05:48:15,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 05:48:15,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 05:48:15,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:15,069 INFO L225 Difference]: With dead ends: 279 [2020-08-19 05:48:15,069 INFO L226 Difference]: Without dead ends: 157 [2020-08-19 05:48:15,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:48:15,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-19 05:48:15,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 123. [2020-08-19 05:48:15,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-19 05:48:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-08-19 05:48:15,165 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 51 [2020-08-19 05:48:15,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:15,166 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-08-19 05:48:15,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:48:15,166 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-08-19 05:48:15,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 05:48:15,170 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:15,170 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] [2020-08-19 05:48:15,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:48:15,171 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:15,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:15,171 INFO L82 PathProgramCache]: Analyzing trace with hash -70243324, now seen corresponding path program 1 times [2020-08-19 05:48:15,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:15,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152409123] [2020-08-19 05:48:15,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:15,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,503 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:15,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:48:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:48:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:48:15,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152409123] [2020-08-19 05:48:15,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:15,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:48:15,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579808795] [2020-08-19 05:48:15,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:48:15,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:15,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:48:15,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:48:15,589 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 5 states. [2020-08-19 05:48:16,059 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:16,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:16,858 INFO L93 Difference]: Finished difference Result 211 states and 262 transitions. [2020-08-19 05:48:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:48:16,858 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 05:48:16,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:16,861 INFO L225 Difference]: With dead ends: 211 [2020-08-19 05:48:16,861 INFO L226 Difference]: Without dead ends: 147 [2020-08-19 05:48:16,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:48:16,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-19 05:48:16,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 114. [2020-08-19 05:48:16,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-19 05:48:16,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2020-08-19 05:48:16,899 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 52 [2020-08-19 05:48:16,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:16,899 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2020-08-19 05:48:16,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:48:16,900 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2020-08-19 05:48:16,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 05:48:16,902 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:16,902 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] [2020-08-19 05:48:16,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:48:16,902 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:16,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:16,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1406294977, now seen corresponding path program 1 times [2020-08-19 05:48:16,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:16,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196309860] [2020-08-19 05:48:16,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:17,243 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:17,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:17,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:17,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:17,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:17,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:17,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:17,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:17,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:17,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 05:48:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:17,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 05:48:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:17,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:48:17,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196309860] [2020-08-19 05:48:17,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:17,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:48:17,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356664430] [2020-08-19 05:48:17,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:48:17,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:17,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:48:17,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:48:17,338 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 9 states. [2020-08-19 05:48:17,743 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:18,078 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:18,340 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:18,590 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:19,452 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:21,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:21,142 INFO L93 Difference]: Finished difference Result 390 states and 490 transitions. [2020-08-19 05:48:21,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 05:48:21,143 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 05:48:21,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:21,148 INFO L225 Difference]: With dead ends: 390 [2020-08-19 05:48:21,149 INFO L226 Difference]: Without dead ends: 304 [2020-08-19 05:48:21,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-19 05:48:21,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-08-19 05:48:21,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 227. [2020-08-19 05:48:21,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-08-19 05:48:21,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 272 transitions. [2020-08-19 05:48:21,283 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 272 transitions. Word has length 57 [2020-08-19 05:48:21,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:21,285 INFO L479 AbstractCegarLoop]: Abstraction has 227 states and 272 transitions. [2020-08-19 05:48:21,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:48:21,285 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 272 transitions. [2020-08-19 05:48:21,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 05:48:21,290 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:21,290 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] [2020-08-19 05:48:21,290 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:48:21,290 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:21,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:21,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1471569046, now seen corresponding path program 1 times [2020-08-19 05:48:21,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:21,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383544797] [2020-08-19 05:48:21,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:21,630 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:21,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:21,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:21,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:21,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:21,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:21,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:21,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:48:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:21,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:48:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:21,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 05:48:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:48:21,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383544797] [2020-08-19 05:48:21,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:21,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:48:21,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925809724] [2020-08-19 05:48:21,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:48:21,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:21,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:48:21,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:48:21,720 INFO L87 Difference]: Start difference. First operand 227 states and 272 transitions. Second operand 9 states. [2020-08-19 05:48:22,109 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:23,338 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:23,653 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:23,933 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:24,174 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:25,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:25,223 INFO L93 Difference]: Finished difference Result 730 states and 972 transitions. [2020-08-19 05:48:25,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 05:48:25,223 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-08-19 05:48:25,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:25,230 INFO L225 Difference]: With dead ends: 730 [2020-08-19 05:48:25,230 INFO L226 Difference]: Without dead ends: 531 [2020-08-19 05:48:25,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 05:48:25,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-08-19 05:48:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 402. [2020-08-19 05:48:25,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-08-19 05:48:25,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 484 transitions. [2020-08-19 05:48:25,360 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 484 transitions. Word has length 62 [2020-08-19 05:48:25,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:25,360 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 484 transitions. [2020-08-19 05:48:25,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:48:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 484 transitions. [2020-08-19 05:48:25,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-19 05:48:25,363 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:25,363 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] [2020-08-19 05:48:25,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:48:25,363 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash -675634618, now seen corresponding path program 1 times [2020-08-19 05:48:25,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:25,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188733624] [2020-08-19 05:48:25,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:25,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,634 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:25,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:48:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 05:48:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 05:48:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 05:48:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:48:25,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188733624] [2020-08-19 05:48:25,771 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:25,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 05:48:25,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120300711] [2020-08-19 05:48:25,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:48:25,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:25,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:48:25,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:48:25,776 INFO L87 Difference]: Start difference. First operand 402 states and 484 transitions. Second operand 10 states. [2020-08-19 05:48:26,150 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:27,204 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:27,496 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:27,770 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:28,330 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:29,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:29,379 INFO L93 Difference]: Finished difference Result 1162 states and 1576 transitions. [2020-08-19 05:48:29,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 05:48:29,382 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-08-19 05:48:29,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:29,388 INFO L225 Difference]: With dead ends: 1162 [2020-08-19 05:48:29,388 INFO L226 Difference]: Without dead ends: 788 [2020-08-19 05:48:29,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2020-08-19 05:48:29,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2020-08-19 05:48:29,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 593. [2020-08-19 05:48:29,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 593 states. [2020-08-19 05:48:29,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 715 transitions. [2020-08-19 05:48:29,542 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 715 transitions. Word has length 66 [2020-08-19 05:48:29,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:29,545 INFO L479 AbstractCegarLoop]: Abstraction has 593 states and 715 transitions. [2020-08-19 05:48:29,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:48:29,545 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 715 transitions. [2020-08-19 05:48:29,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 05:48:29,550 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:29,550 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] [2020-08-19 05:48:29,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:48:29,550 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:29,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:29,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1616247053, now seen corresponding path program 1 times [2020-08-19 05:48:29,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:29,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537489253] [2020-08-19 05:48:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,872 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:29,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:29,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:29,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:48:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:48:29,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:29,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:48:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:30,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:48:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:30,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:48:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:30,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 05:48:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:30,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 05:48:30,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:30,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:48:30,043 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537489253] [2020-08-19 05:48:30,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:30,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 05:48:30,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132048789] [2020-08-19 05:48:30,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:48:30,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:30,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:48:30,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:48:30,047 INFO L87 Difference]: Start difference. First operand 593 states and 715 transitions. Second operand 10 states. [2020-08-19 05:48:30,420 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:31,435 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:31,694 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-19 05:48:31,953 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:32,237 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:34,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:34,013 INFO L93 Difference]: Finished difference Result 2139 states and 3058 transitions. [2020-08-19 05:48:34,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 05:48:34,014 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-19 05:48:34,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:34,026 INFO L225 Difference]: With dead ends: 2139 [2020-08-19 05:48:34,027 INFO L226 Difference]: Without dead ends: 1574 [2020-08-19 05:48:34,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-08-19 05:48:34,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2020-08-19 05:48:34,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1135. [2020-08-19 05:48:34,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1135 states. [2020-08-19 05:48:34,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1372 transitions. [2020-08-19 05:48:34,296 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1372 transitions. Word has length 84 [2020-08-19 05:48:34,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:34,297 INFO L479 AbstractCegarLoop]: Abstraction has 1135 states and 1372 transitions. [2020-08-19 05:48:34,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:48:34,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1372 transitions. [2020-08-19 05:48:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 05:48:34,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:34,301 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] [2020-08-19 05:48:34,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:48:34,302 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:34,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:34,302 INFO L82 PathProgramCache]: Analyzing trace with hash 567429874, now seen corresponding path program 1 times [2020-08-19 05:48:34,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:34,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1546576754] [2020-08-19 05:48:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:34,616 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:34,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:34,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:34,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:34,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:34,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:34,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:34,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:48:34,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:34,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:48:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:34,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:48:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:34,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:48:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:34,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:48:34,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:34,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 05:48:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:34,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 05:48:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:48:34,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1546576754] [2020-08-19 05:48:34,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:34,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 05:48:34,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826296636] [2020-08-19 05:48:34,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:48:34,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:34,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:48:34,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:48:34,852 INFO L87 Difference]: Start difference. First operand 1135 states and 1372 transitions. Second operand 10 states. [2020-08-19 05:48:35,989 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:48:36,229 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:48:36,502 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:36,748 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:37,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:37,943 INFO L93 Difference]: Finished difference Result 2694 states and 3601 transitions. [2020-08-19 05:48:37,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 05:48:37,943 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 84 [2020-08-19 05:48:37,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:37,956 INFO L225 Difference]: With dead ends: 2694 [2020-08-19 05:48:37,956 INFO L226 Difference]: Without dead ends: 1587 [2020-08-19 05:48:37,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:48:37,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2020-08-19 05:48:38,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1175. [2020-08-19 05:48:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1175 states. [2020-08-19 05:48:38,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 1412 transitions. [2020-08-19 05:48:38,216 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 1412 transitions. Word has length 84 [2020-08-19 05:48:38,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:38,216 INFO L479 AbstractCegarLoop]: Abstraction has 1175 states and 1412 transitions. [2020-08-19 05:48:38,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:48:38,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 1412 transitions. [2020-08-19 05:48:38,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-19 05:48:38,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:38,220 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] [2020-08-19 05:48:38,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:48:38,221 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:38,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:38,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1953633268, now seen corresponding path program 1 times [2020-08-19 05:48:38,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:38,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492138363] [2020-08-19 05:48:38,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:38,542 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:38,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:38,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:38,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:38,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:38,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:38,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:38,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:38,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:38,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:38,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:48:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:38,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:48:38,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:38,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:48:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:38,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:48:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:38,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:48:38,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:38,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 05:48:38,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:38,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 05:48:38,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:48:38,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492138363] [2020-08-19 05:48:38,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:38,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 05:48:38,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195541304] [2020-08-19 05:48:38,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:48:38,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:38,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:48:38,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:48:38,679 INFO L87 Difference]: Start difference. First operand 1175 states and 1412 transitions. Second operand 12 states. [2020-08-19 05:48:39,201 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:39,431 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:39,667 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:40,454 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:40,736 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:40,992 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:48:42,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:42,228 INFO L93 Difference]: Finished difference Result 2386 states and 3145 transitions. [2020-08-19 05:48:42,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 05:48:42,229 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2020-08-19 05:48:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:42,237 INFO L225 Difference]: With dead ends: 2386 [2020-08-19 05:48:42,237 INFO L226 Difference]: Without dead ends: 1239 [2020-08-19 05:48:42,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 05:48:42,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-08-19 05:48:42,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 951. [2020-08-19 05:48:42,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2020-08-19 05:48:42,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1112 transitions. [2020-08-19 05:48:42,460 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1112 transitions. Word has length 84 [2020-08-19 05:48:42,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:42,461 INFO L479 AbstractCegarLoop]: Abstraction has 951 states and 1112 transitions. [2020-08-19 05:48:42,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:48:42,461 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1112 transitions. [2020-08-19 05:48:42,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 05:48:42,464 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:42,464 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] [2020-08-19 05:48:42,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:48:42,465 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:42,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:42,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1427109873, now seen corresponding path program 1 times [2020-08-19 05:48:42,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:42,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817135096] [2020-08-19 05:48:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:42,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,704 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:48:42,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:48:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:48:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:48:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:48:42,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:48:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 05:48:42,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:48:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:48:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 05:48:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:48:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:48:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:48:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 05:48:42,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 05:48:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:48:42,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:48:42,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817135096] [2020-08-19 05:48:42,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:48:42,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:48:42,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815963481] [2020-08-19 05:48:42,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:48:42,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:48:42,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:48:42,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:48:42,806 INFO L87 Difference]: Start difference. First operand 951 states and 1112 transitions. Second operand 8 states. [2020-08-19 05:48:43,163 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:48:45,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:48:45,383 INFO L93 Difference]: Finished difference Result 1906 states and 2527 transitions. [2020-08-19 05:48:45,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 05:48:45,384 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2020-08-19 05:48:45,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:48:45,395 INFO L225 Difference]: With dead ends: 1906 [2020-08-19 05:48:45,396 INFO L226 Difference]: Without dead ends: 1903 [2020-08-19 05:48:45,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 05:48:45,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1903 states. [2020-08-19 05:48:45,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1903 to 1456. [2020-08-19 05:48:45,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1456 states. [2020-08-19 05:48:45,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 1720 transitions. [2020-08-19 05:48:45,745 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 1720 transitions. Word has length 88 [2020-08-19 05:48:45,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:48:45,748 INFO L479 AbstractCegarLoop]: Abstraction has 1456 states and 1720 transitions. [2020-08-19 05:48:45,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:48:45,749 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 1720 transitions. [2020-08-19 05:48:45,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-08-19 05:48:45,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:48:45,763 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:48:45,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:48:45,764 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:48:45,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:48:45,765 INFO L82 PathProgramCache]: Analyzing trace with hash 475998026, now seen corresponding path program 1 times [2020-08-19 05:48:45,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:48:45,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462625868] [2020-08-19 05:48:45,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:48:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:48:45,860 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:48:45,860 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:48:45,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:48:45,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:48:45 BoogieIcfgContainer [2020-08-19 05:48:45,912 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:48:45,917 INFO L168 Benchmark]: Toolchain (without parser) took 34966.49 ms. Allocated memory was 141.0 MB in the beginning and 686.3 MB in the end (delta: 545.3 MB). Free memory was 103.1 MB in the beginning and 210.8 MB in the end (delta: -107.7 MB). Peak memory consumption was 437.6 MB. Max. memory is 7.1 GB. [2020-08-19 05:48:45,918 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-19 05:48:45,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 637.09 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 171.1 MB in the end (delta: -67.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-08-19 05:48:45,926 INFO L168 Benchmark]: Boogie Preprocessor took 92.55 ms. Allocated memory is still 205.0 MB. Free memory was 171.1 MB in the beginning and 166.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-08-19 05:48:45,927 INFO L168 Benchmark]: RCFGBuilder took 1112.97 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 166.2 MB in the beginning and 190.7 MB in the end (delta: -24.5 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. [2020-08-19 05:48:45,930 INFO L168 Benchmark]: TraceAbstraction took 33119.28 ms. Allocated memory was 234.9 MB in the beginning and 686.3 MB in the end (delta: 451.4 MB). Free memory was 190.7 MB in the beginning and 210.8 MB in the end (delta: -20.1 MB). Peak memory consumption was 431.3 MB. Max. memory is 7.1 GB. [2020-08-19 05:48:45,935 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 637.09 ms. Allocated memory was 141.0 MB in the beginning and 205.0 MB in the end (delta: 64.0 MB). Free memory was 103.1 MB in the beginning and 171.1 MB in the end (delta: -67.9 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 92.55 ms. Allocated memory is still 205.0 MB. Free memory was 171.1 MB in the beginning and 166.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1112.97 ms. Allocated memory was 205.0 MB in the beginning and 234.9 MB in the end (delta: 29.9 MB). Free memory was 166.2 MB in the beginning and 190.7 MB in the end (delta: -24.5 MB). Peak memory consumption was 78.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33119.28 ms. Allocated memory was 234.9 MB in the beginning and 686.3 MB in the end (delta: 451.4 MB). Free memory was 190.7 MB in the beginning and 210.8 MB in the end (delta: -20.1 MB). Peak memory consumption was 431.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 900]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L545] int cleanupTimeShifts = 4; [L651] int pumpRunning = 0; [L652] int systemActive = 1; [L905] int methAndRunningLastTime ; [L623] int retValue_acc ; [L624] int tmp ; [L628] FCALL select_helpers() [L629] FCALL select_features() [L630] CALL, EXPR valid_product() [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); [L630] RET, EXPR valid_product() [L630] tmp = valid_product() [L632] COND TRUE \read(tmp) [L634] FCALL setup() [L635] CALL runTest() [L616] CALL __utac_acc__Specification2_spec__1() [L910] methAndRunningLastTime = 0 [L616] RET __utac_acc__Specification2_spec__1() [L617] CALL test() [L828] int splverifierCounter ; [L829] int tmp ; [L830] int tmp___0 ; [L831] int tmp___1 ; [L832] int tmp___2 ; [L835] splverifierCounter = 0 [L837] COND TRUE 1 [L839] COND TRUE splverifierCounter < 4 [L845] tmp = __VERIFIER_nondet_int() [L847] COND TRUE \read(tmp) [L849] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L849] RET waterRise() [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND TRUE \read(tmp___0) [L859] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L859] RET changeMethaneLevel() [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___2)) [L873] tmp___1 = __VERIFIER_nondet_int() [L875] COND FALSE !(\read(tmp___1)) [L884] CALL timeShift() [L659] COND FALSE !(\read(pumpRunning)) [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND TRUE ! pumpRunning [L693] CALL, EXPR isHighWaterLevel() [L785] int retValue_acc ; [L786] int tmp ; [L787] int tmp___0 ; [L791] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L791] RET, EXPR isHighWaterSensorDry() [L791] tmp = isHighWaterSensorDry() [L793] COND FALSE !(\read(tmp)) [L796] tmp___0 = 1 [L798] retValue_acc = tmp___0 [L799] return (retValue_acc); [L693] RET, EXPR isHighWaterLevel() [L693] tmp = isHighWaterLevel() [L695] COND TRUE \read(tmp) [L697] CALL activatePump() [L716] pumpRunning = 1 [L697] RET activatePump() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification2_spec__2() [L915] int tmp ; [L916] int tmp___0 ; [L920] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) [L924] CALL, EXPR isPumpRunning() [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); [L924] RET, EXPR isPumpRunning() [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) [L927] COND FALSE !(\read(methAndRunningLastTime)) [L932] methAndRunningLastTime = 1 [L674] RET __utac_acc__Specification2_spec__2() [L884] RET timeShift() [L837] COND TRUE 1 [L839] COND TRUE splverifierCounter < 4 [L845] tmp = __VERIFIER_nondet_int() [L847] COND FALSE !(\read(tmp)) [L855] tmp___0 = __VERIFIER_nondet_int() [L857] COND FALSE !(\read(tmp___0)) [L865] tmp___2 = __VERIFIER_nondet_int() [L867] COND FALSE !(\read(tmp___2)) [L873] tmp___1 = __VERIFIER_nondet_int() [L875] COND FALSE !(\read(tmp___1)) [L884] CALL timeShift() [L659] COND TRUE \read(pumpRunning) [L661] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L661] RET lowerWaterLevel() [L666] COND TRUE \read(systemActive) [L668] CALL processEnvironment() [L688] int tmp ; [L691] COND FALSE !(! pumpRunning) [L706] FCALL processEnvironment__wrappee__base() [L668] RET processEnvironment() [L674] CALL __utac_acc__Specification2_spec__2() [L915] int tmp ; [L916] int tmp___0 ; [L920] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L920] RET, EXPR isMethaneLevelCritical() [L920] tmp = isMethaneLevelCritical() [L922] COND TRUE \read(tmp) [L924] CALL, EXPR isPumpRunning() [L740] int retValue_acc ; [L743] retValue_acc = pumpRunning [L744] return (retValue_acc); [L924] RET, EXPR isPumpRunning() [L924] tmp___0 = isPumpRunning() [L926] COND TRUE \read(tmp___0) [L927] COND TRUE \read(methAndRunningLastTime) [L929] CALL __automaton_fail() [L900] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 230 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 33.0s, OverallIterations: 10, TraceHistogramMax: 2, AutomataDifference: 26.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 955 SDtfs, 2942 SDslu, 1431 SDs, 0 SdLazy, 6232 SolverSat, 2314 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 377 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1456occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 2054 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 759 NumberOfCodeBlocks, 759 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 619 ConstructedInterpolants, 0 QuantifiedInterpolants, 192303 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...