/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:45:14,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:45:14,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:45:14,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:45:14,439 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:45:14,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:45:14,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:45:14,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:45:14,458 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:45:14,459 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:45:14,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:45:14,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:45:14,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:45:14,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:45:14,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:45:14,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:45:14,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:45:14,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:45:14,479 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:45:14,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:45:14,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:45:14,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:45:14,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:45:14,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:45:14,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 22:45:14,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 22:45:14,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 22:45:14,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 22:45:14,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 22:45:14,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 22:45:14,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 22:45:14,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 22:45:14,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 22:45:14,505 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 22:45:14,506 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 22:45:14,506 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 22:45:14,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 22:45:14,507 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 22:45:14,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:45:14,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:45:14,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:45:14,511 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 22:45:14,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:45:14,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:45:14,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:45:14,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:45:14,557 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:45:14,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:45:14,557 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:45:14,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:45:14,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:45:14,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:45:14,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:45:14,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:45:14,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:45:14,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:45:14,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:45:14,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:45:14,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:45:14,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:45:14,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:45:14,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:45:14,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:45:14,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:45:14,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:45:14,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:45:14,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:45:14,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:45:14,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:45:14,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:45:14,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:45:14,563 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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-08-21 22:45:14,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:45:14,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:45:14,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:45:14,891 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:45:14,891 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:45:14,892 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-08-21 22:45:14,950 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9883ead6c/c46d53b476ce4a59ba2a8c5e4e796806/FLAG563571f5c [2020-08-21 22:45:15,429 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:45:15,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-08-21 22:45:15,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9883ead6c/c46d53b476ce4a59ba2a8c5e4e796806/FLAG563571f5c [2020-08-21 22:45:15,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9883ead6c/c46d53b476ce4a59ba2a8c5e4e796806 [2020-08-21 22:45:15,810 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:45:15,811 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:45:15,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:45:15,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:45:15,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:45:15,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:45:15" (1/1) ... [2020-08-21 22:45:15,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:15, skipping insertion in model container [2020-08-21 22:45:15,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:45:15" (1/1) ... [2020-08-21 22:45:15,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:45:15,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:45:16,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:45:16,333 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:45:16,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:45:16,452 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:45:16,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:16 WrapperNode [2020-08-21 22:45:16,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:45:16,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:45:16,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:45:16,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:45:16,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:16" (1/1) ... [2020-08-21 22:45:16,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:16" (1/1) ... [2020-08-21 22:45:16,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:16" (1/1) ... [2020-08-21 22:45:16,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:16" (1/1) ... [2020-08-21 22:45:16,519 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:16" (1/1) ... [2020-08-21 22:45:16,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:16" (1/1) ... [2020-08-21 22:45:16,539 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:16" (1/1) ... [2020-08-21 22:45:16,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:45:16,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:45:16,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:45:16,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:45:16,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:16" (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 22:45:16,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:45:16,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:45:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 22:45:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 22:45:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 22:45:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 22:45:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 22:45:16,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 22:45:16,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 22:45:16,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 22:45:16,635 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 22:45:16,636 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 22:45:16,636 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 22:45:16,636 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 22:45:16,636 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:45:16,637 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 22:45:16,637 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 22:45:16,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 22:45:16,637 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 22:45:16,637 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 22:45:16,638 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 22:45:16,638 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 22:45:16,638 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 22:45:16,638 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 22:45:16,638 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 22:45:16,639 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 22:45:16,639 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 22:45:16,640 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 22:45:16,640 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 22:45:16,640 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 22:45:16,640 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-21 22:45:16,640 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 22:45:16,640 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 22:45:16,640 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 22:45:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 22:45:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 22:45:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 22:45:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 22:45:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 22:45:16,641 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:45:16,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:45:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 22:45:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 22:45:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 22:45:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 22:45:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 22:45:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 22:45:16,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 22:45:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 22:45:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 22:45:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:45:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 22:45:16,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 22:45:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:45:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 22:45:16,644 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 22:45:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:45:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 22:45:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 22:45:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:45:16,645 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 22:45:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 22:45:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 22:45:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 22:45:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 22:45:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 22:45:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 22:45:16,646 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 22:45:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 22:45:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 22:45:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 22:45:16,647 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 22:45:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 22:45:16,648 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 22:45:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 22:45:16,649 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 22:45:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-21 22:45:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 22:45:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 22:45:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 22:45:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 22:45:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 22:45:16,650 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 22:45:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 22:45:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 22:45:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 22:45:16,651 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 22:45:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 22:45:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 22:45:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 22:45:16,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:45:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:45:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 22:45:16,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:45:17,743 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:45:17,743 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 22:45:17,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:45:17 BoogieIcfgContainer [2020-08-21 22:45:17,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:45:17,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:45:17,751 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:45:17,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:45:17,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:45:15" (1/3) ... [2020-08-21 22:45:17,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cf37aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:45:17, skipping insertion in model container [2020-08-21 22:45:17,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:45:16" (2/3) ... [2020-08-21 22:45:17,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cf37aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:45:17, skipping insertion in model container [2020-08-21 22:45:17,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:45:17" (3/3) ... [2020-08-21 22:45:17,758 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2020-08-21 22:45:17,769 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:45:17,778 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:45:17,793 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:45:17,818 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:45:17,819 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:45:17,819 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:45:17,819 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:45:17,819 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:45:17,820 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:45:17,820 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:45:17,820 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:45:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2020-08-21 22:45:17,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 22:45:17,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:17,854 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 22:45:17,855 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:17,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:17,861 INFO L82 PathProgramCache]: Analyzing trace with hash -325582978, now seen corresponding path program 1 times [2020-08-21 22:45:17,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:17,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567892343] [2020-08-21 22:45:17,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:18,480 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:18,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:18,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:18,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:18,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:18,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:18,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:18,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 22:45:18,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:18,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:45:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:18,621 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 22:45:18,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567892343] [2020-08-21 22:45:18,625 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:18,625 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 22:45:18,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56828413] [2020-08-21 22:45:18,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 22:45:18,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:18,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 22:45:18,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 22:45:18,646 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2020-08-21 22:45:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:19,958 INFO L93 Difference]: Finished difference Result 304 states and 394 transitions. [2020-08-21 22:45:19,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 22:45:19,961 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 22:45:19,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:19,980 INFO L225 Difference]: With dead ends: 304 [2020-08-21 22:45:19,980 INFO L226 Difference]: Without dead ends: 165 [2020-08-21 22:45:19,987 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 22:45:20,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-08-21 22:45:20,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 130. [2020-08-21 22:45:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-21 22:45:20,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 151 transitions. [2020-08-21 22:45:20,096 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 151 transitions. Word has length 46 [2020-08-21 22:45:20,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:20,097 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 151 transitions. [2020-08-21 22:45:20,097 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 22:45:20,097 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 151 transitions. [2020-08-21 22:45:20,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 22:45:20,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:20,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:20,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:45:20,102 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:20,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:20,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1889235753, now seen corresponding path program 1 times [2020-08-21 22:45:20,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:20,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848587172] [2020-08-21 22:45:20,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,496 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:20,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:20,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:20,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:45:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 22:45:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:20,564 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 22:45:20,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848587172] [2020-08-21 22:45:20,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:20,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:45:20,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506390577] [2020-08-21 22:45:20,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:45:20,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:20,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:45:20,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:45:20,569 INFO L87 Difference]: Start difference. First operand 130 states and 151 transitions. Second operand 4 states. [2020-08-21 22:45:21,029 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:21,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:21,910 INFO L93 Difference]: Finished difference Result 224 states and 271 transitions. [2020-08-21 22:45:21,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 22:45:21,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 22:45:21,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:21,914 INFO L225 Difference]: With dead ends: 224 [2020-08-21 22:45:21,915 INFO L226 Difference]: Without dead ends: 149 [2020-08-21 22:45:21,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 22:45:21,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-08-21 22:45:21,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 121. [2020-08-21 22:45:21,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-08-21 22:45:21,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 139 transitions. [2020-08-21 22:45:21,954 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 139 transitions. Word has length 47 [2020-08-21 22:45:21,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:21,954 INFO L479 AbstractCegarLoop]: Abstraction has 121 states and 139 transitions. [2020-08-21 22:45:21,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:45:21,954 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 139 transitions. [2020-08-21 22:45:21,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 22:45:21,956 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:21,957 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:21,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:45:21,957 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:21,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:21,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1400660330, now seen corresponding path program 1 times [2020-08-21 22:45:21,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:21,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728580049] [2020-08-21 22:45:21,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:22,302 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:22,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:22,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:22,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:22,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:22,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 22:45:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:22,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:45:22,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:22,406 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 22:45:22,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728580049] [2020-08-21 22:45:22,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:22,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:45:22,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338057862] [2020-08-21 22:45:22,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:45:22,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:22,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:45:22,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:45:22,413 INFO L87 Difference]: Start difference. First operand 121 states and 139 transitions. Second operand 8 states. [2020-08-21 22:45:22,834 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:23,167 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:23,434 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:23,721 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:24,511 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:26,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:26,398 INFO L93 Difference]: Finished difference Result 418 states and 512 transitions. [2020-08-21 22:45:26,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:45:26,398 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 22:45:26,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:26,403 INFO L225 Difference]: With dead ends: 418 [2020-08-21 22:45:26,403 INFO L226 Difference]: Without dead ends: 321 [2020-08-21 22:45:26,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 22:45:26,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-08-21 22:45:26,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 244. [2020-08-21 22:45:26,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2020-08-21 22:45:26,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 290 transitions. [2020-08-21 22:45:26,478 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 290 transitions. Word has length 52 [2020-08-21 22:45:26,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:26,478 INFO L479 AbstractCegarLoop]: Abstraction has 244 states and 290 transitions. [2020-08-21 22:45:26,478 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:45:26,479 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 290 transitions. [2020-08-21 22:45:26,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 22:45:26,481 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:26,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:26,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 22:45:26,482 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:26,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:26,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1567525845, now seen corresponding path program 1 times [2020-08-21 22:45:26,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:26,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742745983] [2020-08-21 22:45:26,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:26,826 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:26,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:26,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:26,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:26,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:26,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:26,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:26,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:26,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:26,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 22:45:26,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 22:45:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:26,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 22:45:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:26,918 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 22:45:26,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742745983] [2020-08-21 22:45:26,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:26,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 22:45:26,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676282392] [2020-08-21 22:45:26,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 22:45:26,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:26,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 22:45:26,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 22:45:26,921 INFO L87 Difference]: Start difference. First operand 244 states and 290 transitions. Second operand 8 states. [2020-08-21 22:45:27,330 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:28,518 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:28,896 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:29,204 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:29,497 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:29,908 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:30,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:30,966 INFO L93 Difference]: Finished difference Result 793 states and 1017 transitions. [2020-08-21 22:45:30,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:45:30,967 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 22:45:30,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:30,974 INFO L225 Difference]: With dead ends: 793 [2020-08-21 22:45:30,974 INFO L226 Difference]: Without dead ends: 573 [2020-08-21 22:45:30,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-21 22:45:30,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2020-08-21 22:45:31,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 443. [2020-08-21 22:45:31,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-21 22:45:31,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 530 transitions. [2020-08-21 22:45:31,092 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 530 transitions. Word has length 57 [2020-08-21 22:45:31,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:31,093 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 530 transitions. [2020-08-21 22:45:31,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 22:45:31,093 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 530 transitions. [2020-08-21 22:45:31,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 22:45:31,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:31,096 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] [2020-08-21 22:45:31,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 22:45:31,097 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:31,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:31,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1743298223, now seen corresponding path program 1 times [2020-08-21 22:45:31,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:31,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89747891] [2020-08-21 22:45:31,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:31,467 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:31,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:31,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:31,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:31,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:31,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:31,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:31,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 22:45:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:31,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 22:45:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:31,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-21 22:45:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:31,592 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 22:45:31,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89747891] [2020-08-21 22:45:31,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:31,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:45:31,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65022623] [2020-08-21 22:45:31,595 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:45:31,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:31,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:45:31,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:45:31,596 INFO L87 Difference]: Start difference. First operand 443 states and 530 transitions. Second operand 9 states. [2020-08-21 22:45:32,011 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:33,052 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:33,362 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:33,656 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:34,333 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:34,680 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:35,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:35,616 INFO L93 Difference]: Finished difference Result 1254 states and 1644 transitions. [2020-08-21 22:45:35,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 22:45:35,616 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-21 22:45:35,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:35,625 INFO L225 Difference]: With dead ends: 1254 [2020-08-21 22:45:35,625 INFO L226 Difference]: Without dead ends: 835 [2020-08-21 22:45:35,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 22:45:35,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2020-08-21 22:45:35,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 671. [2020-08-21 22:45:35,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-08-21 22:45:35,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 815 transitions. [2020-08-21 22:45:35,842 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 815 transitions. Word has length 61 [2020-08-21 22:45:35,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:35,843 INFO L479 AbstractCegarLoop]: Abstraction has 671 states and 815 transitions. [2020-08-21 22:45:35,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:45:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 815 transitions. [2020-08-21 22:45:35,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 22:45:35,846 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:35,847 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:35,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 22:45:35,847 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:35,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:35,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1614775342, now seen corresponding path program 1 times [2020-08-21 22:45:35,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:35,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604946546] [2020-08-21 22:45:35,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,201 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:36,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:36,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:36,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:45:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 22:45:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 22:45:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:36,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:45:36,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604946546] [2020-08-21 22:45:36,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:36,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:45:36,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803840902] [2020-08-21 22:45:36,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:45:36,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:36,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:45:36,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:45:36,342 INFO L87 Difference]: Start difference. First operand 671 states and 815 transitions. Second operand 9 states. [2020-08-21 22:45:36,849 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:37,942 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:38,226 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:38,550 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:38,865 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:41,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:41,023 INFO L93 Difference]: Finished difference Result 2315 states and 3234 transitions. [2020-08-21 22:45:41,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 22:45:41,024 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-21 22:45:41,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:41,039 INFO L225 Difference]: With dead ends: 2315 [2020-08-21 22:45:41,040 INFO L226 Difference]: Without dead ends: 1668 [2020-08-21 22:45:41,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-21 22:45:41,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2020-08-21 22:45:41,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1271. [2020-08-21 22:45:41,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-08-21 22:45:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1540 transitions. [2020-08-21 22:45:41,347 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1540 transitions. Word has length 94 [2020-08-21 22:45:41,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:41,348 INFO L479 AbstractCegarLoop]: Abstraction has 1271 states and 1540 transitions. [2020-08-21 22:45:41,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:45:41,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1540 transitions. [2020-08-21 22:45:41,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 22:45:41,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:41,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:41,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 22:45:41,353 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:41,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:41,354 INFO L82 PathProgramCache]: Analyzing trace with hash 709252497, now seen corresponding path program 1 times [2020-08-21 22:45:41,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:41,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14285327] [2020-08-21 22:45:41,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,664 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:41,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:45:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:41,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 22:45:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 22:45:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:41,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:45:41,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14285327] [2020-08-21 22:45:41,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:41,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 22:45:41,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150140537] [2020-08-21 22:45:41,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 22:45:41,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:41,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 22:45:41,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 22:45:41,841 INFO L87 Difference]: Start difference. First operand 1271 states and 1540 transitions. Second operand 9 states. [2020-08-21 22:45:43,053 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:43,389 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 22:45:43,701 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:43,982 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:45,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:45,198 INFO L93 Difference]: Finished difference Result 2944 states and 3942 transitions. [2020-08-21 22:45:45,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 22:45:45,199 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-08-21 22:45:45,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:45,210 INFO L225 Difference]: With dead ends: 2944 [2020-08-21 22:45:45,211 INFO L226 Difference]: Without dead ends: 1697 [2020-08-21 22:45:45,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 22:45:45,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2020-08-21 22:45:45,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1311. [2020-08-21 22:45:45,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-08-21 22:45:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1580 transitions. [2020-08-21 22:45:45,545 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1580 transitions. Word has length 94 [2020-08-21 22:45:45,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:45,546 INFO L479 AbstractCegarLoop]: Abstraction has 1311 states and 1580 transitions. [2020-08-21 22:45:45,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 22:45:45,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1580 transitions. [2020-08-21 22:45:45,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-21 22:45:45,550 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:45,551 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:45,551 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 22:45:45,551 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:45,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:45,552 INFO L82 PathProgramCache]: Analyzing trace with hash -188140781, now seen corresponding path program 1 times [2020-08-21 22:45:45,552 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:45,552 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554412788] [2020-08-21 22:45:45,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:45,899 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:45,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:45,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:45,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:45,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:45,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:45,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:45,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-21 22:45:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:45,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 22:45:45,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:45,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:46,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:46,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:46,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:46,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:46,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:46,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:46,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:46,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-21 22:45:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:46,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 22:45:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:46,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 22:45:46,051 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554412788] [2020-08-21 22:45:46,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:45:46,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 22:45:46,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350000464] [2020-08-21 22:45:46,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 22:45:46,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:46,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 22:45:46,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 22:45:46,054 INFO L87 Difference]: Start difference. First operand 1311 states and 1580 transitions. Second operand 11 states. [2020-08-21 22:45:46,619 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:46,887 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:47,165 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:47,930 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:48,216 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:48,500 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 22:45:49,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:49,716 INFO L93 Difference]: Finished difference Result 2566 states and 3327 transitions. [2020-08-21 22:45:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 22:45:49,717 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 94 [2020-08-21 22:45:49,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:49,725 INFO L225 Difference]: With dead ends: 2566 [2020-08-21 22:45:49,725 INFO L226 Difference]: Without dead ends: 1279 [2020-08-21 22:45:49,730 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 22:45:49,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-08-21 22:45:49,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1029. [2020-08-21 22:45:49,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1029 states. [2020-08-21 22:45:49,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1212 transitions. [2020-08-21 22:45:49,910 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1212 transitions. Word has length 94 [2020-08-21 22:45:49,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:49,911 INFO L479 AbstractCegarLoop]: Abstraction has 1029 states and 1212 transitions. [2020-08-21 22:45:49,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 22:45:49,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1212 transitions. [2020-08-21 22:45:49,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-21 22:45:49,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:49,915 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:49,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 22:45:49,915 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:49,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:49,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1347463022, now seen corresponding path program 1 times [2020-08-21 22:45:49,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:49,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663376676] [2020-08-21 22:45:49,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,227 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 22:45:50,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:45:50,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:45:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 22:45:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 22:45:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 22:45:50,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 22:45:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 22:45:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 22:45:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:50,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:45:50,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 22:45:50,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 22:45:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-21 22:45:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-21 22:45:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:45:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 22:45:50,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663376676] [2020-08-21 22:45:50,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 22:45:50,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-21 22:45:50,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619530890] [2020-08-21 22:45:50,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-21 22:45:50,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:45:50,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-21 22:45:50,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-21 22:45:50,477 INFO L87 Difference]: Start difference. First operand 1029 states and 1212 transitions. Second operand 17 states. [2020-08-21 22:45:51,099 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:51,455 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:51,738 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:52,007 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 22:45:52,664 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 22:45:53,346 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:53,773 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:54,925 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:55,287 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:55,712 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:56,014 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 22:45:56,639 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-21 22:45:57,209 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 188 [2020-08-21 22:45:58,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:45:58,641 INFO L93 Difference]: Finished difference Result 2268 states and 2829 transitions. [2020-08-21 22:45:58,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-21 22:45:58,641 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 98 [2020-08-21 22:45:58,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:45:58,649 INFO L225 Difference]: With dead ends: 2268 [2020-08-21 22:45:58,649 INFO L226 Difference]: Without dead ends: 1263 [2020-08-21 22:45:58,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=328, Invalid=1312, Unknown=0, NotChecked=0, Total=1640 [2020-08-21 22:45:58,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2020-08-21 22:45:58,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 1007. [2020-08-21 22:45:58,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2020-08-21 22:45:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1163 transitions. [2020-08-21 22:45:58,866 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1163 transitions. Word has length 98 [2020-08-21 22:45:58,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:45:58,867 INFO L479 AbstractCegarLoop]: Abstraction has 1007 states and 1163 transitions. [2020-08-21 22:45:58,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-21 22:45:58,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1163 transitions. [2020-08-21 22:45:58,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-21 22:45:58,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:45:58,874 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 22:45:58,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 22:45:58,874 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:45:58,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:45:58,874 INFO L82 PathProgramCache]: Analyzing trace with hash 555633972, now seen corresponding path program 1 times [2020-08-21 22:45:58,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:45:58,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988111707] [2020-08-21 22:45:58,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:45:58,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:45:58,980 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:45:58,980 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:45:58,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 22:45:59,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:45:59 BoogieIcfgContainer [2020-08-21 22:45:59,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:45:59,055 INFO L168 Benchmark]: Toolchain (without parser) took 43241.43 ms. Allocated memory was 149.4 MB in the beginning and 658.5 MB in the end (delta: 509.1 MB). Free memory was 104.1 MB in the beginning and 323.5 MB in the end (delta: -219.5 MB). Peak memory consumption was 289.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:59,061 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 149.4 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 22:45:59,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.98 ms. Allocated memory was 149.4 MB in the beginning and 206.0 MB in the end (delta: 56.6 MB). Free memory was 103.8 MB in the beginning and 174.1 MB in the end (delta: -70.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:59,062 INFO L168 Benchmark]: Boogie Preprocessor took 104.27 ms. Allocated memory is still 206.0 MB. Free memory was 174.1 MB in the beginning and 170.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:59,063 INFO L168 Benchmark]: RCFGBuilder took 1190.81 ms. Allocated memory was 206.0 MB in the beginning and 233.8 MB in the end (delta: 27.8 MB). Free memory was 170.2 MB in the beginning and 189.8 MB in the end (delta: -19.7 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:59,065 INFO L168 Benchmark]: TraceAbstraction took 41300.45 ms. Allocated memory was 233.8 MB in the beginning and 658.5 MB in the end (delta: 424.7 MB). Free memory was 189.8 MB in the beginning and 323.5 MB in the end (delta: -133.7 MB). Peak memory consumption was 291.0 MB. Max. memory is 7.1 GB. [2020-08-21 22:45:59,074 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 149.4 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 640.98 ms. Allocated memory was 149.4 MB in the beginning and 206.0 MB in the end (delta: 56.6 MB). Free memory was 103.8 MB in the beginning and 174.1 MB in the end (delta: -70.2 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.27 ms. Allocated memory is still 206.0 MB. Free memory was 174.1 MB in the beginning and 170.2 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1190.81 ms. Allocated memory was 206.0 MB in the beginning and 233.8 MB in the end (delta: 27.8 MB). Free memory was 170.2 MB in the beginning and 189.8 MB in the end (delta: -19.7 MB). Peak memory consumption was 79.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41300.45 ms. Allocated memory was 233.8 MB in the beginning and 658.5 MB in the end (delta: 424.7 MB). Free memory was 189.8 MB in the beginning and 323.5 MB in the end (delta: -133.7 MB). Peak memory consumption was 291.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L498] int pumpRunning = 0; [L499] int systemActive = 1; [L693] int waterLevel = 1; [L694] int methaneLevelCritical = 0; [L851] int cleanupTimeShifts = 4; [L924] int retValue_acc ; [L925] int tmp ; [L929] FCALL select_helpers() [L930] FCALL select_features() [L931] CALL, EXPR valid_product() [L842] int retValue_acc ; [L845] retValue_acc = 1 [L846] return (retValue_acc); [L931] RET, EXPR valid_product() [L931] tmp = valid_product() [L933] COND TRUE \read(tmp) [L935] FCALL setup() [L936] CALL runTest() [L918] CALL test() [L422] int splverifierCounter ; [L423] int tmp ; [L424] int tmp___0 ; [L425] int tmp___1 ; [L426] int tmp___2 ; [L429] splverifierCounter = 0 [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp) [L443] CALL waterRise() [L711] COND TRUE waterLevel < 2 [L712] waterLevel = waterLevel + 1 [L443] RET waterRise() [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___0)) [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) [L478] CALL timeShift() [L506] COND FALSE !(\read(pumpRunning)) [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND TRUE ! pumpRunning [L540] CALL, EXPR isHighWaterLevel() [L650] int retValue_acc ; [L651] int tmp ; [L652] int tmp___0 ; [L656] CALL, EXPR isHighWaterSensorDry() [L773] int retValue_acc ; [L776] COND FALSE !(waterLevel < 2) [L780] retValue_acc = 0 [L781] return (retValue_acc); [L656] RET, EXPR isHighWaterSensorDry() [L656] tmp = isHighWaterSensorDry() [L658] COND FALSE !(\read(tmp)) [L661] tmp___0 = 1 [L663] retValue_acc = tmp___0 [L664] return (retValue_acc); [L540] RET, EXPR isHighWaterLevel() [L540] tmp = isHighWaterLevel() [L542] COND TRUE \read(tmp) [L544] CALL activatePump() [L569] int tmp ; [L573] CALL, EXPR isMethaneAlarm() [L594] int retValue_acc ; [L598] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L598] RET, EXPR isMethaneLevelCritical() [L598] retValue_acc = isMethaneLevelCritical() [L600] return (retValue_acc); [L573] RET, EXPR isMethaneAlarm() [L573] tmp = isMethaneAlarm() [L575] COND FALSE !(\read(tmp)) [L579] CALL activatePump__wrappee__highWaterSensor() [L563] pumpRunning = 1 [L579] RET activatePump__wrappee__highWaterSensor() [L544] RET activatePump() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND FALSE !(\read(tmp)) [L521] RET __utac_acc__Specification1_spec__1() [L478] RET timeShift() [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___0) [L453] CALL changeMethaneLevel() [L723] COND FALSE !(\read(methaneLevelCritical)) [L726] methaneLevelCritical = 1 [L453] RET changeMethaneLevel() [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND FALSE !(\read(tmp___2)) [L467] tmp___1 = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp___1)) [L478] CALL timeShift() [L506] COND TRUE \read(pumpRunning) [L508] CALL lowerWaterLevel() [L699] COND TRUE waterLevel > 0 [L700] waterLevel = waterLevel - 1 [L508] RET lowerWaterLevel() [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND FALSE !(! pumpRunning) [L553] FCALL processEnvironment__wrappee__base() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND TRUE \read(tmp) [L797] CALL, EXPR isPumpRunning() [L605] int retValue_acc ; [L608] retValue_acc = pumpRunning [L609] return (retValue_acc); [L797] RET, EXPR isPumpRunning() [L797] tmp___0 = isPumpRunning() [L799] COND TRUE \read(tmp___0) [L801] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.1s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 34.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1086 SDtfs, 2271 SDslu, 1554 SDs, 0 SdLazy, 7793 SolverSat, 1524 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 15.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1311occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 1723 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 777 NumberOfCodeBlocks, 777 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 634 ConstructedInterpolants, 0 QuantifiedInterpolants, 196729 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 10/12 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...