/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 19:31:40,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 19:31:40,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 19:31:40,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 19:31:40,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 19:31:40,493 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 19:31:40,494 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 19:31:40,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 19:31:40,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 19:31:40,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 19:31:40,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 19:31:40,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 19:31:40,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 19:31:40,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 19:31:40,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 19:31:40,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 19:31:40,516 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 19:31:40,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 19:31:40,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 19:31:40,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 19:31:40,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 19:31:40,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 19:31:40,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 19:31:40,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 19:31:40,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 19:31:40,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 19:31:40,546 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 19:31:40,547 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 19:31:40,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 19:31:40,551 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 19:31:40,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 19:31:40,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 19:31:40,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 19:31:40,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 19:31:40,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 19:31:40,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 19:31:40,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 19:31:40,560 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 19:31:40,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 19:31:40,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 19:31:40,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 19:31:40,566 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 [2020-08-21 19:31:40,600 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 19:31:40,601 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 19:31:40,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 19:31:40,602 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 19:31:40,603 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 19:31:40,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 19:31:40,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 19:31:40,603 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 19:31:40,603 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 19:31:40,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 19:31:40,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 19:31:40,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 19:31:40,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 19:31:40,604 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 19:31:40,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 19:31:40,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 19:31:40,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 19:31:40,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 19:31:40,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 19:31:40,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 19:31:40,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 19:31:40,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 19:31:40,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 19:31:40,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 19:31:40,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 19:31:40,607 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 19:31:40,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 19:31:40,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 19:31:40,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 19:31:40,608 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=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-08-21 19:31:40,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 19:31:40,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 19:31:40,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 19:31:40,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 19:31:40,905 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 19:31:40,906 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-08-21 19:31:40,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/073fda65c/39fa2e9993a14b8bbc3a884c831bc189/FLAGa4ec720d7 [2020-08-21 19:31:41,588 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 19:31:41,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product53.cil.c [2020-08-21 19:31:41,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/073fda65c/39fa2e9993a14b8bbc3a884c831bc189/FLAGa4ec720d7 [2020-08-21 19:31:41,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/073fda65c/39fa2e9993a14b8bbc3a884c831bc189 [2020-08-21 19:31:41,835 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 19:31:41,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 19:31:41,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 19:31:41,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 19:31:41,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 19:31:41,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:31:41" (1/1) ... [2020-08-21 19:31:41,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be095dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:31:41, skipping insertion in model container [2020-08-21 19:31:41,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 07:31:41" (1/1) ... [2020-08-21 19:31:41,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 19:31:41,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 19:31:42,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:31:42,347 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 19:31:42,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 19:31:42,485 INFO L208 MainTranslator]: Completed translation [2020-08-21 19:31:42,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:31:42 WrapperNode [2020-08-21 19:31:42,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 19:31:42,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 19:31:42,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 19:31:42,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 19:31:42,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:31:42" (1/1) ... [2020-08-21 19:31:42,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:31:42" (1/1) ... [2020-08-21 19:31:42,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:31:42" (1/1) ... [2020-08-21 19:31:42,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:31:42" (1/1) ... [2020-08-21 19:31:42,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:31:42" (1/1) ... [2020-08-21 19:31:42,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:31:42" (1/1) ... [2020-08-21 19:31:42,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:31:42" (1/1) ... [2020-08-21 19:31:42,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 19:31:42,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 19:31:42,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 19:31:42,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 19:31:42,646 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:31:42" (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 [2020-08-21 19:31:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 19:31:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 19:31:42,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 19:31:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 19:31:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 19:31:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 19:31:42,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 19:31:42,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 19:31:42,734 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 19:31:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 19:31:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 19:31:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 19:31:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 19:31:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 19:31:42,735 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 19:31:42,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 19:31:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 19:31:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 19:31:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 19:31:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 19:31:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 19:31:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 19:31:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 19:31:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 19:31:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 19:31:42,739 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 19:31:42,739 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 19:31:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 19:31:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 19:31:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 19:31:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 19:31:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 19:31:42,740 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 19:31:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 19:31:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 19:31:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 19:31:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 19:31:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 19:31:42,741 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 19:31:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 19:31:42,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 19:31:42,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 19:31:42,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 19:31:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 19:31:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 19:31:42,743 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 19:31:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 19:31:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 19:31:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 19:31:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 19:31:42,745 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 19:31:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 19:31:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 19:31:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 19:31:42,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 19:31:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 19:31:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 19:31:42,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 19:31:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 19:31:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 19:31:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 19:31:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 19:31:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 19:31:42,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 19:31:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 19:31:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 19:31:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 19:31:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 19:31:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 19:31:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 19:31:42,749 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 19:31:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 19:31:42,750 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 19:31:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 19:31:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 19:31:42,751 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 19:31:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 19:31:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 19:31:42,752 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 19:31:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 19:31:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 19:31:42,753 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 19:31:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 19:31:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 19:31:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 19:31:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 19:31:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 19:31:42,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 19:31:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 19:31:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 19:31:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 19:31:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 19:31:42,755 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 19:31:42,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 19:31:42,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 19:31:42,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 19:31:43,896 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 19:31:43,896 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 19:31:43,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:31:43 BoogieIcfgContainer [2020-08-21 19:31:43,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 19:31:43,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 19:31:43,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 19:31:43,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 19:31:43,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 07:31:41" (1/3) ... [2020-08-21 19:31:43,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b9c47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:31:43, skipping insertion in model container [2020-08-21 19:31:43,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 07:31:42" (2/3) ... [2020-08-21 19:31:43,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42b9c47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 07:31:43, skipping insertion in model container [2020-08-21 19:31:43,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 07:31:43" (3/3) ... [2020-08-21 19:31:43,910 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product53.cil.c [2020-08-21 19:31:43,920 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 19:31:43,928 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 19:31:43,943 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 19:31:43,966 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 19:31:43,966 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 19:31:43,966 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 19:31:43,967 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 19:31:43,967 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 19:31:43,967 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 19:31:43,967 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 19:31:43,967 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 19:31:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-21 19:31:44,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 19:31:44,002 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:31:44,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:31:44,003 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:31:44,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:31:44,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1737906003, now seen corresponding path program 1 times [2020-08-21 19:31:44,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:31:44,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707856121] [2020-08-21 19:31:44,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:31:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:44,676 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:31:44,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:31:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:44,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:31:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:44,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:31:44,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:44,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:31:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:44,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:31:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:44,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 19:31:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:44,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 19:31:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:44,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:31:44,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707856121] [2020-08-21 19:31:44,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:31:44,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 19:31:44,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678913259] [2020-08-21 19:31:44,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 19:31:44,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:31:44,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 19:31:44,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:31:44,817 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-08-21 19:31:46,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:31:46,079 INFO L93 Difference]: Finished difference Result 329 states and 431 transitions. [2020-08-21 19:31:46,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 19:31:46,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 19:31:46,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:31:46,096 INFO L225 Difference]: With dead ends: 329 [2020-08-21 19:31:46,096 INFO L226 Difference]: Without dead ends: 177 [2020-08-21 19:31:46,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 19:31:46,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-21 19:31:46,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-21 19:31:46,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-21 19:31:46,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2020-08-21 19:31:46,196 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 46 [2020-08-21 19:31:46,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:31:46,196 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2020-08-21 19:31:46,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 19:31:46,197 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2020-08-21 19:31:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 19:31:46,200 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:31:46,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:31:46,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 19:31:46,201 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:31:46,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:31:46,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1744597296, now seen corresponding path program 1 times [2020-08-21 19:31:46,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:31:46,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700513116] [2020-08-21 19:31:46,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:31:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:46,603 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:31:46,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:31:46,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:46,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:31:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:46,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:31:46,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:46,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:31:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:46,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:31:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:46,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 19:31:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:46,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 19:31:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:31:46,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700513116] [2020-08-21 19:31:46,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:31:46,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 19:31:46,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413200435] [2020-08-21 19:31:46,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 19:31:46,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:31:46,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 19:31:46,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 19:31:46,648 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand 4 states. [2020-08-21 19:31:47,053 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:31:48,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:31:48,018 INFO L93 Difference]: Finished difference Result 262 states and 322 transitions. [2020-08-21 19:31:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 19:31:48,019 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 19:31:48,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:31:48,023 INFO L225 Difference]: With dead ends: 262 [2020-08-21 19:31:48,023 INFO L226 Difference]: Without dead ends: 161 [2020-08-21 19:31:48,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 19:31:48,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-21 19:31:48,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2020-08-21 19:31:48,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-21 19:31:48,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-21 19:31:48,069 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 47 [2020-08-21 19:31:48,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:31:48,070 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-21 19:31:48,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 19:31:48,070 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-21 19:31:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 19:31:48,072 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:31:48,073 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] [2020-08-21 19:31:48,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 19:31:48,073 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:31:48,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:31:48,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1316795497, now seen corresponding path program 1 times [2020-08-21 19:31:48,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:31:48,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803164989] [2020-08-21 19:31:48,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:31:48,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:48,367 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:31:48,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:31:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:48,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:31:48,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:48,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:31:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:48,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:31:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:48,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:31:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 19:31:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:48,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 19:31:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:31:48,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803164989] [2020-08-21 19:31:48,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:31:48,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:31:48,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300196333] [2020-08-21 19:31:48,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:31:48,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:31:48,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:31:48,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:31:48,457 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 8 states. [2020-08-21 19:31:48,772 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:31:49,096 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:31:49,344 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:31:49,579 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:31:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:31:50,927 INFO L93 Difference]: Finished difference Result 271 states and 336 transitions. [2020-08-21 19:31:50,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 19:31:50,928 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 19:31:50,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:31:50,932 INFO L225 Difference]: With dead ends: 271 [2020-08-21 19:31:50,932 INFO L226 Difference]: Without dead ends: 161 [2020-08-21 19:31:50,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 19:31:50,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-08-21 19:31:50,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2020-08-21 19:31:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-21 19:31:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 157 transitions. [2020-08-21 19:31:50,977 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 157 transitions. Word has length 51 [2020-08-21 19:31:50,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:31:50,978 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 157 transitions. [2020-08-21 19:31:50,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:31:50,978 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 157 transitions. [2020-08-21 19:31:50,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-21 19:31:50,981 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:31:50,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:31:50,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 19:31:50,982 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:31:50,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:31:50,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1654731465, now seen corresponding path program 1 times [2020-08-21 19:31:50,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:31:50,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030322589] [2020-08-21 19:31:50,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:31:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:51,283 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:31:51,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:31:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:51,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:31:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:51,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:31:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:51,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:31:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:51,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:31:51,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 19:31:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:51,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:31:51,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:51,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:31:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:51,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:31:51,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:51,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 19:31:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:51,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 19:31:51,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:51,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:31:51,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030322589] [2020-08-21 19:31:51,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:31:51,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 19:31:51,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127418074] [2020-08-21 19:31:51,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 19:31:51,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:31:51,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 19:31:51,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 19:31:51,402 INFO L87 Difference]: Start difference. First operand 134 states and 157 transitions. Second operand 6 states. [2020-08-21 19:31:51,710 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:31:52,885 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:31:53,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:31:53,656 INFO L93 Difference]: Finished difference Result 369 states and 459 transitions. [2020-08-21 19:31:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 19:31:53,657 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-08-21 19:31:53,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:31:53,661 INFO L225 Difference]: With dead ends: 369 [2020-08-21 19:31:53,661 INFO L226 Difference]: Without dead ends: 259 [2020-08-21 19:31:53,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 19:31:53,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-08-21 19:31:53,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 218. [2020-08-21 19:31:53,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-21 19:31:53,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 248 transitions. [2020-08-21 19:31:53,742 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 248 transitions. Word has length 69 [2020-08-21 19:31:53,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:31:53,743 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 248 transitions. [2020-08-21 19:31:53,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 19:31:53,743 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 248 transitions. [2020-08-21 19:31:53,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 19:31:53,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:31:53,746 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] [2020-08-21 19:31:53,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 19:31:53,747 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:31:53,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:31:53,747 INFO L82 PathProgramCache]: Analyzing trace with hash -1727174811, now seen corresponding path program 1 times [2020-08-21 19:31:53,748 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:31:53,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815934445] [2020-08-21 19:31:53,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:31:53,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:54,029 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:31:54,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:31:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:54,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:31:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:54,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:31:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:54,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:31:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:54,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:31:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:54,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 19:31:54,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:54,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:31:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:31:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:54,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:31:54,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:54,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:31:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:54,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:31:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:54,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-21 19:31:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:54,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-21 19:31:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:54,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:31:54,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815934445] [2020-08-21 19:31:54,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:31:54,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 19:31:54,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325586343] [2020-08-21 19:31:54,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 19:31:54,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:31:54,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 19:31:54,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 19:31:54,169 INFO L87 Difference]: Start difference. First operand 218 states and 248 transitions. Second operand 8 states. [2020-08-21 19:31:54,504 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:31:55,691 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:31:55,961 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:31:56,201 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:31:56,428 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:31:56,768 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:31:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:31:57,934 INFO L93 Difference]: Finished difference Result 649 states and 794 transitions. [2020-08-21 19:31:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 19:31:57,935 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-21 19:31:57,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:31:57,939 INFO L225 Difference]: With dead ends: 649 [2020-08-21 19:31:57,939 INFO L226 Difference]: Without dead ends: 455 [2020-08-21 19:31:57,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 19:31:57,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2020-08-21 19:31:58,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 391. [2020-08-21 19:31:58,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-21 19:31:58,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 446 transitions. [2020-08-21 19:31:58,035 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 446 transitions. Word has length 83 [2020-08-21 19:31:58,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:31:58,036 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 446 transitions. [2020-08-21 19:31:58,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 19:31:58,036 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 446 transitions. [2020-08-21 19:31:58,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-21 19:31:58,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:31:58,038 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] [2020-08-21 19:31:58,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 19:31:58,038 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:31:58,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:31:58,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1108418135, now seen corresponding path program 1 times [2020-08-21 19:31:58,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:31:58,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [329719475] [2020-08-21 19:31:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:31:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,351 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:31:58,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:31:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:31:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:31:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:31:58,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:31:58,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:31:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 19:31:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:31:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:31:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:31:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:31:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:31:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-21 19:31:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-21 19:31:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:31:58,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:31:58,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [329719475] [2020-08-21 19:31:58,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:31:58,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:31:58,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610175647] [2020-08-21 19:31:58,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:31:58,466 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:31:58,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:31:58,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:31:58,467 INFO L87 Difference]: Start difference. First operand 391 states and 446 transitions. Second operand 9 states. [2020-08-21 19:31:58,846 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:31:59,953 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:32:00,193 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:32:00,449 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:32:00,698 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:32:00,942 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:32:02,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:32:02,085 INFO L93 Difference]: Finished difference Result 494 states and 614 transitions. [2020-08-21 19:32:02,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 19:32:02,086 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-21 19:32:02,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:32:02,090 INFO L225 Difference]: With dead ends: 494 [2020-08-21 19:32:02,090 INFO L226 Difference]: Without dead ends: 491 [2020-08-21 19:32:02,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 19:32:02,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2020-08-21 19:32:02,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 391. [2020-08-21 19:32:02,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2020-08-21 19:32:02,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 445 transitions. [2020-08-21 19:32:02,171 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 445 transitions. Word has length 87 [2020-08-21 19:32:02,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:32:02,172 INFO L479 AbstractCegarLoop]: Abstraction has 391 states and 445 transitions. [2020-08-21 19:32:02,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:32:02,172 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 445 transitions. [2020-08-21 19:32:02,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 19:32:02,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:32:02,174 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] [2020-08-21 19:32:02,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 19:32:02,174 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:32:02,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:32:02,175 INFO L82 PathProgramCache]: Analyzing trace with hash 661895326, now seen corresponding path program 1 times [2020-08-21 19:32:02,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:32:02,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1381020163] [2020-08-21 19:32:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:32:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,402 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:32:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:32:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:32:02,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:32:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:32:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:32:02,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:32:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 19:32:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:32:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:32:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:32:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:32:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:32:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 19:32:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 19:32:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:02,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:32:02,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1381020163] [2020-08-21 19:32:02,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:32:02,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 19:32:02,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873709024] [2020-08-21 19:32:02,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 19:32:02,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:32:02,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 19:32:02,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 19:32:02,556 INFO L87 Difference]: Start difference. First operand 391 states and 445 transitions. Second operand 9 states. [2020-08-21 19:32:03,356 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 19:32:03,625 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 19:32:03,858 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:32:04,081 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:32:05,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:32:05,216 INFO L93 Difference]: Finished difference Result 862 states and 1052 transitions. [2020-08-21 19:32:05,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 19:32:05,217 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-21 19:32:05,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:32:05,221 INFO L225 Difference]: With dead ends: 862 [2020-08-21 19:32:05,221 INFO L226 Difference]: Without dead ends: 495 [2020-08-21 19:32:05,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:32:05,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2020-08-21 19:32:05,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 401. [2020-08-21 19:32:05,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-08-21 19:32:05,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 455 transitions. [2020-08-21 19:32:05,311 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 455 transitions. Word has length 88 [2020-08-21 19:32:05,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:32:05,312 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 455 transitions. [2020-08-21 19:32:05,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 19:32:05,312 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 455 transitions. [2020-08-21 19:32:05,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 19:32:05,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:32:05,314 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] [2020-08-21 19:32:05,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 19:32:05,314 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:32:05,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:32:05,314 INFO L82 PathProgramCache]: Analyzing trace with hash 936654940, now seen corresponding path program 1 times [2020-08-21 19:32:05,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:32:05,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2045058130] [2020-08-21 19:32:05,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:32:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,587 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:32:05,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:32:05,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:32:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:32:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:32:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:32:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:32:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 19:32:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:32:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:32:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:32:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:32:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:32:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 19:32:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 19:32:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:32:05,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2045058130] [2020-08-21 19:32:05,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:32:05,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 19:32:05,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688774298] [2020-08-21 19:32:05,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 19:32:05,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:32:05,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 19:32:05,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 19:32:05,764 INFO L87 Difference]: Start difference. First operand 401 states and 455 transitions. Second operand 11 states. [2020-08-21 19:32:06,451 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:32:06,785 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:32:07,109 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:32:07,692 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:32:07,962 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:32:08,193 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 19:32:09,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:32:09,463 INFO L93 Difference]: Finished difference Result 886 states and 1094 transitions. [2020-08-21 19:32:09,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 19:32:09,464 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2020-08-21 19:32:09,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:32:09,472 INFO L225 Difference]: With dead ends: 886 [2020-08-21 19:32:09,473 INFO L226 Difference]: Without dead ends: 509 [2020-08-21 19:32:09,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 19:32:09,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2020-08-21 19:32:09,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 409. [2020-08-21 19:32:09,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 409 states. [2020-08-21 19:32:09,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 463 transitions. [2020-08-21 19:32:09,557 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 463 transitions. Word has length 88 [2020-08-21 19:32:09,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:32:09,557 INFO L479 AbstractCegarLoop]: Abstraction has 409 states and 463 transitions. [2020-08-21 19:32:09,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 19:32:09,558 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 463 transitions. [2020-08-21 19:32:09,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-21 19:32:09,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:32:09,564 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] [2020-08-21 19:32:09,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 19:32:09,564 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:32:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:32:09,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1408012101, now seen corresponding path program 1 times [2020-08-21 19:32:09,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:32:09,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524125802] [2020-08-21 19:32:09,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:32:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,809 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 19:32:09,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 19:32:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 19:32:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 19:32:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 19:32:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 19:32:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 19:32:09,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 19:32:09,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:32:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:32:09,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 19:32:09,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 19:32:09,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 19:32:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 19:32:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 19:32:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 19:32:09,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 19:32:09,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524125802] [2020-08-21 19:32:09,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 19:32:09,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 19:32:09,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937374989] [2020-08-21 19:32:09,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 19:32:09,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 19:32:09,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 19:32:09,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 19:32:09,966 INFO L87 Difference]: Start difference. First operand 409 states and 463 transitions. Second operand 7 states. [2020-08-21 19:32:10,264 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:32:10,716 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 19:32:12,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 19:32:12,819 INFO L93 Difference]: Finished difference Result 1209 states and 1542 transitions. [2020-08-21 19:32:12,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-21 19:32:12,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 88 [2020-08-21 19:32:12,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 19:32:12,827 INFO L225 Difference]: With dead ends: 1209 [2020-08-21 19:32:12,827 INFO L226 Difference]: Without dead ends: 824 [2020-08-21 19:32:12,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 19:32:12,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2020-08-21 19:32:12,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 725. [2020-08-21 19:32:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 725 states. [2020-08-21 19:32:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 857 transitions. [2020-08-21 19:32:12,952 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 857 transitions. Word has length 88 [2020-08-21 19:32:12,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 19:32:12,953 INFO L479 AbstractCegarLoop]: Abstraction has 725 states and 857 transitions. [2020-08-21 19:32:12,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 19:32:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 857 transitions. [2020-08-21 19:32:12,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-21 19:32:12,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 19:32:12,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 19:32:12,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 19:32:12,955 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 19:32:12,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 19:32:12,956 INFO L82 PathProgramCache]: Analyzing trace with hash 350479285, now seen corresponding path program 1 times [2020-08-21 19:32:12,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 19:32:12,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002293284] [2020-08-21 19:32:12,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 19:32:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 19:32:13,015 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 19:32:13,015 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 19:32:13,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 19:32:13,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 07:32:13 BoogieIcfgContainer [2020-08-21 19:32:13,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 19:32:13,045 INFO L168 Benchmark]: Toolchain (without parser) took 31209.23 ms. Allocated memory was 140.5 MB in the beginning and 637.0 MB in the end (delta: 496.5 MB). Free memory was 102.7 MB in the beginning and 306.0 MB in the end (delta: -203.3 MB). Peak memory consumption was 293.2 MB. Max. memory is 7.1 GB. [2020-08-21 19:32:13,046 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 19:32:13,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.42 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 173.8 MB in the end (delta: -71.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2020-08-21 19:32:13,048 INFO L168 Benchmark]: Boogie Preprocessor took 158.18 ms. Allocated memory is still 204.5 MB. Free memory was 173.8 MB in the beginning and 168.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-08-21 19:32:13,048 INFO L168 Benchmark]: RCFGBuilder took 1256.37 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 168.8 MB in the beginning and 194.0 MB in the end (delta: -25.2 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. [2020-08-21 19:32:13,049 INFO L168 Benchmark]: TraceAbstraction took 29140.85 ms. Allocated memory was 235.9 MB in the beginning and 637.0 MB in the end (delta: 401.1 MB). Free memory was 192.6 MB in the beginning and 306.0 MB in the end (delta: -113.4 MB). Peak memory consumption was 287.7 MB. Max. memory is 7.1 GB. [2020-08-21 19:32:13,053 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 649.42 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 173.8 MB in the end (delta: -71.3 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.18 ms. Allocated memory is still 204.5 MB. Free memory was 173.8 MB in the beginning and 168.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1256.37 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 168.8 MB in the beginning and 194.0 MB in the end (delta: -25.2 MB). Peak memory consumption was 82.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29140.85 ms. Allocated memory was 235.9 MB in the beginning and 637.0 MB in the end (delta: 401.1 MB). Free memory was 192.6 MB in the beginning and 306.0 MB in the end (delta: -113.4 MB). Peak memory consumption was 287.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 73]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L554] int pumpRunning = 0; [L555] int systemActive = 1; [L878] int waterLevel = 1; [L879] int methaneLevelCritical = 0; [L525] int retValue_acc ; [L526] int tmp ; [L530] FCALL select_helpers() [L531] FCALL select_features() [L532] CALL, EXPR valid_product() [L868] int retValue_acc ; [L871] retValue_acc = 1 [L872] return (retValue_acc); [L532] RET, EXPR valid_product() [L532] tmp = valid_product() [L534] COND TRUE \read(tmp) [L536] FCALL setup() [L537] CALL runTest() [L516] CALL test() [L778] int splverifierCounter ; [L779] int tmp ; [L780] int tmp___0 ; [L781] int tmp___1 ; [L782] int tmp___2 ; [L785] splverifierCounter = 0 [L787] COND TRUE 1 [L789] COND TRUE splverifierCounter < 4 [L795] tmp = __VERIFIER_nondet_int() [L797] COND TRUE \read(tmp) [L799] CALL waterRise() [L896] COND TRUE waterLevel < 2 [L897] waterLevel = waterLevel + 1 [L799] RET waterRise() [L805] tmp___0 = __VERIFIER_nondet_int() [L807] COND TRUE \read(tmp___0) [L809] CALL changeMethaneLevel() [L908] COND FALSE !(\read(methaneLevelCritical)) [L911] methaneLevelCritical = 1 [L809] RET changeMethaneLevel() [L815] tmp___2 = __VERIFIER_nondet_int() [L817] COND TRUE \read(tmp___2) [L830] CALL timeShift() [L561] COND FALSE !(\read(pumpRunning)) [L568] COND TRUE \read(systemActive) [L570] CALL processEnvironment() [L642] int tmp ; [L645] COND FALSE !(\read(pumpRunning)) [L660] CALL processEnvironment__wrappee__lowWaterSensor() [L616] int tmp ; [L619] COND FALSE !(\read(pumpRunning)) [L634] CALL processEnvironment__wrappee__highWaterSensor() [L590] int tmp ; [L593] COND TRUE ! pumpRunning [L595] CALL, EXPR isHighWaterLevel() [L739] int retValue_acc ; [L740] int tmp ; [L741] int tmp___0 ; [L745] CALL, EXPR isHighWaterSensorDry() [L958] int retValue_acc ; [L961] COND FALSE !(waterLevel < 2) [L965] retValue_acc = 0 [L966] return (retValue_acc); [L745] RET, EXPR isHighWaterSensorDry() [L745] tmp = isHighWaterSensorDry() [L747] COND FALSE !(\read(tmp)) [L750] tmp___0 = 1 [L752] retValue_acc = tmp___0 [L753] return (retValue_acc); [L595] RET, EXPR isHighWaterLevel() [L595] tmp = isHighWaterLevel() [L597] COND TRUE \read(tmp) [L599] CALL activatePump() [L670] pumpRunning = 1 [L599] RET activatePump() [L634] RET processEnvironment__wrappee__highWaterSensor() [L660] RET processEnvironment__wrappee__lowWaterSensor() [L570] RET processEnvironment() [L576] CALL __utac_acc__Specification1_spec__1() [L44] int tmp ; [L45] int tmp___0 ; [L49] CALL, EXPR isMethaneLevelCritical() [L917] int retValue_acc ; [L920] retValue_acc = methaneLevelCritical [L921] return (retValue_acc); [L49] RET, EXPR isMethaneLevelCritical() [L49] tmp = isMethaneLevelCritical() [L51] COND TRUE \read(tmp) [L53] CALL, EXPR isPumpRunning() [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); [L53] RET, EXPR isPumpRunning() [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) [L57] CALL __automaton_fail() [L73] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 245 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 24.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1167 SDtfs, 2093 SDslu, 1034 SDs, 0 SdLazy, 5380 SolverSat, 1307 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 334 GetRequests, 236 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=725occurred 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: 0.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 586 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 739 NumberOfCodeBlocks, 739 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 638 ConstructedInterpolants, 0 QuantifiedInterpolants, 200772 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...