/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:11:34,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:11:34,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:11:34,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:11:34,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:11:34,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:11:34,534 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:11:34,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:11:34,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:11:34,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:11:34,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:11:34,545 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:11:34,545 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:11:34,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:11:34,550 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:11:34,551 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:11:34,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:11:34,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:11:34,555 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:11:34,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:11:34,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:11:34,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:11:34,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:11:34,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:11:34,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:11:34,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:11:34,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:11:34,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:11:34,580 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:11:34,581 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:11:34,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:11:34,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:11:34,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:11:34,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:11:34,585 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:11:34,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:11:34,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:11:34,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:11:34,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:11:34,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:11:34,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:11:34,590 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 13:11:34,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:11:34,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:11:34,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:11:34,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:11:34,625 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:11:34,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:11:34,625 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:11:34,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:11:34,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:11:34,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:11:34,626 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:11:34,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:11:34,627 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:11:34,627 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:11:34,627 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:11:34,627 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:11:34,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:11:34,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:11:34,628 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:11:34,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:11:34,628 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:11:34,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:11:34,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:11:34,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:11:34,629 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:11:34,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:11:34,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:11:34,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:11:34,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:11:34,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-21 13:11:34,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:11:34,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:11:34,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:11:34,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:11:34,936 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:11:34,937 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-08-21 13:11:35,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09df27652/b0a4fdd6b6474197b9f49e95a6ff9873/FLAG5a3bcba10 [2020-08-21 13:11:35,572 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:11:35,573 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product46.cil.c [2020-08-21 13:11:35,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09df27652/b0a4fdd6b6474197b9f49e95a6ff9873/FLAG5a3bcba10 [2020-08-21 13:11:35,848 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09df27652/b0a4fdd6b6474197b9f49e95a6ff9873 [2020-08-21 13:11:35,856 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:11:35,858 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:11:35,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:11:35,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:11:35,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:11:35,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:11:35" (1/1) ... [2020-08-21 13:11:35,867 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63832a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:35, skipping insertion in model container [2020-08-21 13:11:35,867 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:11:35" (1/1) ... [2020-08-21 13:11:35,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:11:35,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:11:36,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:11:36,318 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:11:36,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:11:36,472 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:11:36,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:36 WrapperNode [2020-08-21 13:11:36,474 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:11:36,475 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:11:36,475 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:11:36,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:11:36,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:36" (1/1) ... [2020-08-21 13:11:36,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:36" (1/1) ... [2020-08-21 13:11:36,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:36" (1/1) ... [2020-08-21 13:11:36,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:36" (1/1) ... [2020-08-21 13:11:36,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:36" (1/1) ... [2020-08-21 13:11:36,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:36" (1/1) ... [2020-08-21 13:11:36,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:36" (1/1) ... [2020-08-21 13:11:36,572 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:11:36,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:11:36,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:11:36,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:11:36,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:36" (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 13:11:36,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:11:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:11:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:11:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:11:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:11:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:11:36,671 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:11:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:11:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 13:11:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:11:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:11:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:11:36,672 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:11:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:11:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:11:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:11:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:11:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:11:36,673 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 13:11:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:11:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 13:11:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:11:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:11:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:11:36,674 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:11:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:11:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:11:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 13:11:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:11:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:11:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:11:36,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:11:36,676 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:11:36,676 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:11:36,676 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:11:36,676 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:11:36,676 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:11:36,677 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:11:36,677 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:11:36,677 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:11:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:11:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:11:36,677 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:11:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:11:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:11:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:11:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:11:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:11:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:11:36,678 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:11:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:11:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:11:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:11:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:11:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:11:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:11:36,679 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:11:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:11:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:11:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 13:11:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:11:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:11:36,680 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:11:36,681 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:11:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:11:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:11:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:11:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:11:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:11:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:11:36,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:11:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:11:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:11:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:11:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:11:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:11:36,683 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:11:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:11:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 13:11:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:11:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:11:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:11:36,684 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 13:11:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:11:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 13:11:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:11:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:11:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:11:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:11:38,019 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:11:38,019 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:11:38,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:11:38 BoogieIcfgContainer [2020-08-21 13:11:38,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:11:38,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:11:38,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:11:38,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:11:38,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:11:35" (1/3) ... [2020-08-21 13:11:38,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d37f3e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:11:38, skipping insertion in model container [2020-08-21 13:11:38,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:11:36" (2/3) ... [2020-08-21 13:11:38,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d37f3e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:11:38, skipping insertion in model container [2020-08-21 13:11:38,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:11:38" (3/3) ... [2020-08-21 13:11:38,034 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2020-08-21 13:11:38,045 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:11:38,053 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:11:38,068 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:11:38,098 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:11:38,098 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:11:38,098 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:11:38,099 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:11:38,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:11:38,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:11:38,100 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:11:38,100 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:11:38,124 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2020-08-21 13:11:38,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 13:11:38,135 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:38,137 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 13:11:38,137 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:38,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:38,144 INFO L82 PathProgramCache]: Analyzing trace with hash 580316159, now seen corresponding path program 1 times [2020-08-21 13:11:38,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:38,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340617857] [2020-08-21 13:11:38,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:38,862 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:38,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:38,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:38,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:38,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:38,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:38,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:38,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:11:38,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:11:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:38,939 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 13:11:38,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340617857] [2020-08-21 13:11:38,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:38,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 13:11:38,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857754873] [2020-08-21 13:11:38,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 13:11:38,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:38,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 13:11:38,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:11:38,970 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 3 states. [2020-08-21 13:11:40,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:40,158 INFO L93 Difference]: Finished difference Result 318 states and 412 transitions. [2020-08-21 13:11:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 13:11:40,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 13:11:40,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:40,177 INFO L225 Difference]: With dead ends: 318 [2020-08-21 13:11:40,178 INFO L226 Difference]: Without dead ends: 172 [2020-08-21 13:11:40,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 13:11:40,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-08-21 13:11:40,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 137. [2020-08-21 13:11:40,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-21 13:11:40,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 160 transitions. [2020-08-21 13:11:40,334 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 160 transitions. Word has length 46 [2020-08-21 13:11:40,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:40,335 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 160 transitions. [2020-08-21 13:11:40,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 13:11:40,336 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 160 transitions. [2020-08-21 13:11:40,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 13:11:40,343 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:40,343 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 13:11:40,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:11:40,344 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:40,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:40,344 INFO L82 PathProgramCache]: Analyzing trace with hash -2039927443, now seen corresponding path program 1 times [2020-08-21 13:11:40,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:40,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253304752] [2020-08-21 13:11:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:40,740 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:40,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:40,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:40,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:40,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:40,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:40,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:11:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:40,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 13:11:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:40,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:11:40,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253304752] [2020-08-21 13:11:40,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:40,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:11:40,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099575535] [2020-08-21 13:11:40,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:11:40,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:40,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:11:40,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:11:40,809 INFO L87 Difference]: Start difference. First operand 137 states and 160 transitions. Second operand 4 states. [2020-08-21 13:11:41,249 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:42,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:42,132 INFO L93 Difference]: Finished difference Result 247 states and 299 transitions. [2020-08-21 13:11:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 13:11:42,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 13:11:42,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:42,136 INFO L225 Difference]: With dead ends: 247 [2020-08-21 13:11:42,136 INFO L226 Difference]: Without dead ends: 156 [2020-08-21 13:11:42,138 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 13:11:42,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-21 13:11:42,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2020-08-21 13:11:42,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 13:11:42,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 148 transitions. [2020-08-21 13:11:42,177 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 148 transitions. Word has length 47 [2020-08-21 13:11:42,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:42,177 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 148 transitions. [2020-08-21 13:11:42,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:11:42,178 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 148 transitions. [2020-08-21 13:11:42,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 13:11:42,179 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:42,180 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 13:11:42,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:11:42,180 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:42,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:42,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1891987703, now seen corresponding path program 1 times [2020-08-21 13:11:42,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:42,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240478247] [2020-08-21 13:11:42,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:42,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,513 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:42,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:42,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:42,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 13:11:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:11:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 13:11:42,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240478247] [2020-08-21 13:11:42,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:42,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 13:11:42,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718275133] [2020-08-21 13:11:42,585 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 13:11:42,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:42,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 13:11:42,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 13:11:42,586 INFO L87 Difference]: Start difference. First operand 128 states and 148 transitions. Second operand 8 states. [2020-08-21 13:11:42,992 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:43,304 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:43,551 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:43,767 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:45,068 INFO L93 Difference]: Finished difference Result 260 states and 317 transitions. [2020-08-21 13:11:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 13:11:45,069 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-21 13:11:45,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:45,072 INFO L225 Difference]: With dead ends: 260 [2020-08-21 13:11:45,072 INFO L226 Difference]: Without dead ends: 156 [2020-08-21 13:11:45,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:11:45,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-21 13:11:45,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 128. [2020-08-21 13:11:45,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-21 13:11:45,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 147 transitions. [2020-08-21 13:11:45,128 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 147 transitions. Word has length 52 [2020-08-21 13:11:45,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:45,129 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 147 transitions. [2020-08-21 13:11:45,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 13:11:45,129 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 147 transitions. [2020-08-21 13:11:45,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 13:11:45,131 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:45,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:45,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:11:45,132 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:45,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:45,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1745786735, now seen corresponding path program 1 times [2020-08-21 13:11:45,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:45,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945183196] [2020-08-21 13:11:45,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,397 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:45,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:45,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:11:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 13:11:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-21 13:11:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:45,514 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 13:11:45,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945183196] [2020-08-21 13:11:45,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:45,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 13:11:45,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356217708] [2020-08-21 13:11:45,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 13:11:45,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:45,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 13:11:45,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 13:11:45,517 INFO L87 Difference]: Start difference. First operand 128 states and 147 transitions. Second operand 6 states. [2020-08-21 13:11:45,846 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:47,032 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:47,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:47,694 INFO L93 Difference]: Finished difference Result 365 states and 446 transitions. [2020-08-21 13:11:47,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:11:47,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-21 13:11:47,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:47,699 INFO L225 Difference]: With dead ends: 365 [2020-08-21 13:11:47,699 INFO L226 Difference]: Without dead ends: 261 [2020-08-21 13:11:47,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:11:47,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-08-21 13:11:47,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 218. [2020-08-21 13:11:47,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-08-21 13:11:47,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 245 transitions. [2020-08-21 13:11:47,754 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 245 transitions. Word has length 65 [2020-08-21 13:11:47,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:47,754 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 245 transitions. [2020-08-21 13:11:47,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 13:11:47,755 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 245 transitions. [2020-08-21 13:11:47,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 13:11:47,757 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:47,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:47,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:11:47,758 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:47,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:47,758 INFO L82 PathProgramCache]: Analyzing trace with hash 189412453, now seen corresponding path program 1 times [2020-08-21 13:11:47,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:47,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588568059] [2020-08-21 13:11:47,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:47,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:48,040 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:48,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:48,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:48,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:48,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:48,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:48,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:48,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:48,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:11:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:48,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:48,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:48,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:48,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:48,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:48,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:48,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 13:11:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:48,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:11:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:48,207 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 13:11:48,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588568059] [2020-08-21 13:11:48,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:48,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 13:11:48,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440602732] [2020-08-21 13:11:48,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:11:48,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:48,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:11:48,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:11:48,210 INFO L87 Difference]: Start difference. First operand 218 states and 245 transitions. Second operand 11 states. [2020-08-21 13:11:48,720 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:48,998 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:49,237 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:49,936 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:50,204 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:50,486 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:50,738 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:51,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:51,736 INFO L93 Difference]: Finished difference Result 456 states and 540 transitions. [2020-08-21 13:11:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:11:51,738 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-21 13:11:51,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:51,741 INFO L225 Difference]: With dead ends: 456 [2020-08-21 13:11:51,741 INFO L226 Difference]: Without dead ends: 262 [2020-08-21 13:11:51,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:11:51,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-08-21 13:11:51,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 223. [2020-08-21 13:11:51,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-08-21 13:11:51,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 250 transitions. [2020-08-21 13:11:51,809 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 250 transitions. Word has length 79 [2020-08-21 13:11:51,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:51,809 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 250 transitions. [2020-08-21 13:11:51,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:11:51,810 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 250 transitions. [2020-08-21 13:11:51,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-21 13:11:51,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:51,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:11:51,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:11:51,812 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:51,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:51,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1196790941, now seen corresponding path program 1 times [2020-08-21 13:11:51,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:51,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063223809] [2020-08-21 13:11:51,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,147 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:52,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 13:11:52,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-21 13:11:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-21 13:11:52,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:52,274 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 13:11:52,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063223809] [2020-08-21 13:11:52,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:11:52,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:11:52,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442496077] [2020-08-21 13:11:52,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:11:52,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:52,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:11:52,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:11:52,278 INFO L87 Difference]: Start difference. First operand 223 states and 250 transitions. Second operand 12 states. [2020-08-21 13:11:53,067 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:53,382 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:53,638 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:53,916 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:54,449 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:11:55,432 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:55,767 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:56,038 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:56,290 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:11:56,607 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:56,894 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:11:58,235 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:11:58,601 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:11:59,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:11:59,226 INFO L93 Difference]: Finished difference Result 795 states and 1004 transitions. [2020-08-21 13:11:59,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 13:11:59,227 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-21 13:11:59,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:11:59,232 INFO L225 Difference]: With dead ends: 795 [2020-08-21 13:11:59,232 INFO L226 Difference]: Without dead ends: 596 [2020-08-21 13:11:59,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 13:11:59,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-08-21 13:11:59,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 534. [2020-08-21 13:11:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 534 states. [2020-08-21 13:11:59,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 617 transitions. [2020-08-21 13:11:59,341 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 617 transitions. Word has length 79 [2020-08-21 13:11:59,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:11:59,341 INFO L479 AbstractCegarLoop]: Abstraction has 534 states and 617 transitions. [2020-08-21 13:11:59,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:11:59,341 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 617 transitions. [2020-08-21 13:11:59,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-21 13:11:59,346 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:11:59,346 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 13:11:59,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:11:59,347 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:11:59,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:11:59,347 INFO L82 PathProgramCache]: Analyzing trace with hash 754253541, now seen corresponding path program 1 times [2020-08-21 13:11:59,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:11:59,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382783805] [2020-08-21 13:11:59,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:11:59,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,624 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:11:59,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:11:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:11:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:11:59,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:11:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:11:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:11:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:59,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:59,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:11:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:11:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-21 13:11:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 13:11:59,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:11:59,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:11:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:11:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-21 13:11:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-21 13:11:59,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:11:59,944 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 13:11:59,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382783805] [2020-08-21 13:11:59,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:11:59,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 13:11:59,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223358274] [2020-08-21 13:11:59,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:11:59,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:11:59,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:11:59,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:11:59,949 INFO L87 Difference]: Start difference. First operand 534 states and 617 transitions. Second operand 11 states. [2020-08-21 13:12:00,778 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 13:12:01,357 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:12:03,188 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 13:12:04,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:12:04,723 INFO L93 Difference]: Finished difference Result 1040 states and 1284 transitions. [2020-08-21 13:12:04,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 13:12:04,724 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 154 [2020-08-21 13:12:04,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:12:04,729 INFO L225 Difference]: With dead ends: 1040 [2020-08-21 13:12:04,729 INFO L226 Difference]: Without dead ends: 660 [2020-08-21 13:12:04,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-08-21 13:12:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2020-08-21 13:12:04,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 618. [2020-08-21 13:12:04,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-08-21 13:12:04,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 733 transitions. [2020-08-21 13:12:04,896 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 733 transitions. Word has length 154 [2020-08-21 13:12:04,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:12:04,897 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 733 transitions. [2020-08-21 13:12:04,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:12:04,897 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 733 transitions. [2020-08-21 13:12:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 13:12:04,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:12:04,903 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 13:12:04,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:12:04,903 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:12:04,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:12:04,904 INFO L82 PathProgramCache]: Analyzing trace with hash -205804435, now seen corresponding path program 1 times [2020-08-21 13:12:04,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:12:04,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1489704355] [2020-08-21 13:12:04,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:12:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,170 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:12:05,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:12:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:12:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:12:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:12:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:12:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:12:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:12:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:12:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:12:05,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 13:12:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 13:12:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:12:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 13:12:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 13:12:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:05,382 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 13:12:05,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1489704355] [2020-08-21 13:12:05,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:12:05,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 13:12:05,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696474208] [2020-08-21 13:12:05,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:12:05,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:12:05,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:12:05,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:12:05,385 INFO L87 Difference]: Start difference. First operand 618 states and 733 transitions. Second operand 12 states. [2020-08-21 13:12:05,903 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:12:06,117 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:12:06,340 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:12:06,947 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:12:07,176 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:12:07,394 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:12:08,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:12:08,513 INFO L93 Difference]: Finished difference Result 1241 states and 1528 transitions. [2020-08-21 13:12:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:12:08,514 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 143 [2020-08-21 13:12:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:12:08,518 INFO L225 Difference]: With dead ends: 1241 [2020-08-21 13:12:08,518 INFO L226 Difference]: Without dead ends: 647 [2020-08-21 13:12:08,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:12:08,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2020-08-21 13:12:08,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 608. [2020-08-21 13:12:08,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 608 states. [2020-08-21 13:12:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 720 transitions. [2020-08-21 13:12:08,770 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 720 transitions. Word has length 143 [2020-08-21 13:12:08,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:12:08,771 INFO L479 AbstractCegarLoop]: Abstraction has 608 states and 720 transitions. [2020-08-21 13:12:08,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:12:08,772 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 720 transitions. [2020-08-21 13:12:08,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-08-21 13:12:08,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:12:08,778 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 13:12:08,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:12:08,778 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:12:08,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:12:08,779 INFO L82 PathProgramCache]: Analyzing trace with hash 677704555, now seen corresponding path program 1 times [2020-08-21 13:12:08,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:12:08,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370487727] [2020-08-21 13:12:08,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:12:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,126 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:12:09,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:12:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:12:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:12:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:12:09,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:12:09,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:12:09,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:09,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:12:09,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:12:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:12:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 13:12:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-21 13:12:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:12:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-21 13:12:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 13:12:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 13:12:09,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370487727] [2020-08-21 13:12:09,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:12:09,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 13:12:09,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765651971] [2020-08-21 13:12:09,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 13:12:09,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:12:09,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 13:12:09,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 13:12:09,347 INFO L87 Difference]: Start difference. First operand 608 states and 720 transitions. Second operand 10 states. [2020-08-21 13:12:10,230 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:10,472 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:12:10,720 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:12:10,938 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:12:11,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:12:11,878 INFO L93 Difference]: Finished difference Result 1115 states and 1379 transitions. [2020-08-21 13:12:11,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:12:11,879 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 143 [2020-08-21 13:12:11,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:12:11,886 INFO L225 Difference]: With dead ends: 1115 [2020-08-21 13:12:11,886 INFO L226 Difference]: Without dead ends: 531 [2020-08-21 13:12:11,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:12:11,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2020-08-21 13:12:12,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 503. [2020-08-21 13:12:12,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-08-21 13:12:12,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 592 transitions. [2020-08-21 13:12:12,054 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 592 transitions. Word has length 143 [2020-08-21 13:12:12,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:12:12,055 INFO L479 AbstractCegarLoop]: Abstraction has 503 states and 592 transitions. [2020-08-21 13:12:12,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 13:12:12,055 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 592 transitions. [2020-08-21 13:12:12,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-08-21 13:12:12,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:12:12,057 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 13:12:12,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:12:12,057 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:12:12,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:12:12,058 INFO L82 PathProgramCache]: Analyzing trace with hash 744245076, now seen corresponding path program 1 times [2020-08-21 13:12:12,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:12:12,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989934929] [2020-08-21 13:12:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:12:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,353 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:12:12,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:12:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:12:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:12:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:12:12,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:12:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:12:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:12:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:12:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:12:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:12:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 13:12:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 13:12:12,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:12,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:12:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-21 13:12:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-21 13:12:12,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:12,716 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-21 13:12:12,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989934929] [2020-08-21 13:12:12,717 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:12:12,717 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 13:12:12,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086378541] [2020-08-21 13:12:12,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 13:12:12,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:12:12,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 13:12:12,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:12:12,718 INFO L87 Difference]: Start difference. First operand 503 states and 592 transitions. Second operand 15 states. [2020-08-21 13:12:13,302 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:12:14,035 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:12:14,988 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:15,288 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:15,537 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:15,788 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:12:16,104 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:12:16,358 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:12:16,933 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-21 13:12:17,481 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-21 13:12:18,301 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:18,532 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:18,787 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:12:19,021 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:12:19,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:12:19,706 INFO L93 Difference]: Finished difference Result 1337 states and 1633 transitions. [2020-08-21 13:12:19,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 13:12:19,712 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 147 [2020-08-21 13:12:19,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:12:19,718 INFO L225 Difference]: With dead ends: 1337 [2020-08-21 13:12:19,718 INFO L226 Difference]: Without dead ends: 858 [2020-08-21 13:12:19,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 13:12:19,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2020-08-21 13:12:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 816. [2020-08-21 13:12:19,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-08-21 13:12:19,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 943 transitions. [2020-08-21 13:12:19,904 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 943 transitions. Word has length 147 [2020-08-21 13:12:19,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:12:19,906 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 943 transitions. [2020-08-21 13:12:19,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 13:12:19,906 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 943 transitions. [2020-08-21 13:12:19,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 13:12:19,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:12:19,909 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:12:19,909 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:12:19,910 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:12:19,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:12:19,910 INFO L82 PathProgramCache]: Analyzing trace with hash 857110512, now seen corresponding path program 1 times [2020-08-21 13:12:19,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:12:19,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586517976] [2020-08-21 13:12:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:12:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,188 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:12:20,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:12:20,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:12:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:12:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:12:20,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:12:20,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:12:20,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:12:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:12:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:12:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:12:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-21 13:12:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-21 13:12:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-21 13:12:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:12:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 13:12:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 13:12:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-08-21 13:12:20,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586517976] [2020-08-21 13:12:20,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:12:20,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 13:12:20,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414101812] [2020-08-21 13:12:20,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:12:20,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:12:20,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:12:20,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:12:20,437 INFO L87 Difference]: Start difference. First operand 816 states and 943 transitions. Second operand 11 states. [2020-08-21 13:12:21,058 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:12:22,792 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:23,045 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:12:23,313 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:23,583 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:23,824 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:12:24,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:12:24,351 INFO L93 Difference]: Finished difference Result 967 states and 1196 transitions. [2020-08-21 13:12:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 13:12:24,352 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 151 [2020-08-21 13:12:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:12:24,359 INFO L225 Difference]: With dead ends: 967 [2020-08-21 13:12:24,359 INFO L226 Difference]: Without dead ends: 964 [2020-08-21 13:12:24,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2020-08-21 13:12:24,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2020-08-21 13:12:24,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 816. [2020-08-21 13:12:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-08-21 13:12:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 940 transitions. [2020-08-21 13:12:24,604 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 940 transitions. Word has length 151 [2020-08-21 13:12:24,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:12:24,607 INFO L479 AbstractCegarLoop]: Abstraction has 816 states and 940 transitions. [2020-08-21 13:12:24,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:12:24,608 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 940 transitions. [2020-08-21 13:12:24,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-21 13:12:24,612 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:12:24,612 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 13:12:24,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 13:12:24,613 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:12:24,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:12:24,613 INFO L82 PathProgramCache]: Analyzing trace with hash -671566746, now seen corresponding path program 1 times [2020-08-21 13:12:24,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:12:24,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706651441] [2020-08-21 13:12:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:12:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:24,917 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 13:12:24,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:12:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:24,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:12:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:24,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:12:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:24,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:12:24,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:24,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:12:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:24,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 13:12:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:24,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:12:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:24,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:24,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:24,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:24,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:12:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:12:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:12:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-21 13:12:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-21 13:12:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:12:25,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:12:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:12:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 13:12:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-21 13:12:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:12:25,125 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 13:12:25,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706651441] [2020-08-21 13:12:25,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:12:25,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 13:12:25,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130655013] [2020-08-21 13:12:25,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:12:25,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:12:25,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:12:25,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:12:25,127 INFO L87 Difference]: Start difference. First operand 816 states and 940 transitions. Second operand 12 states. [2020-08-21 13:12:25,630 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:12:26,174 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:12:26,983 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:27,255 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:27,518 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:27,777 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 13:12:28,076 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:12:28,351 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:12:29,649 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 13:12:30,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:12:30,381 INFO L93 Difference]: Finished difference Result 1937 states and 2374 transitions. [2020-08-21 13:12:30,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 13:12:30,381 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 151 [2020-08-21 13:12:30,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:12:30,389 INFO L225 Difference]: With dead ends: 1937 [2020-08-21 13:12:30,389 INFO L226 Difference]: Without dead ends: 1271 [2020-08-21 13:12:30,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-21 13:12:30,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1271 states. [2020-08-21 13:12:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1271 to 1102. [2020-08-21 13:12:30,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-08-21 13:12:30,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1285 transitions. [2020-08-21 13:12:30,647 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1285 transitions. Word has length 151 [2020-08-21 13:12:30,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:12:30,647 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1285 transitions. [2020-08-21 13:12:30,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:12:30,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1285 transitions. [2020-08-21 13:12:30,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-08-21 13:12:30,651 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:12:30,652 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:12:30,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 13:12:30,652 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:12:30,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:12:30,653 INFO L82 PathProgramCache]: Analyzing trace with hash -939199605, now seen corresponding path program 2 times [2020-08-21 13:12:30,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:12:30,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695271914] [2020-08-21 13:12:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:12:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 13:12:30,740 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 13:12:30,740 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 13:12:30,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-21 13:12:30,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 01:12:30 BoogieIcfgContainer [2020-08-21 13:12:30,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 13:12:30,817 INFO L168 Benchmark]: Toolchain (without parser) took 54959.79 ms. Allocated memory was 141.6 MB in the beginning and 711.5 MB in the end (delta: 569.9 MB). Free memory was 102.5 MB in the beginning and 588.0 MB in the end (delta: -485.5 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2020-08-21 13:12:30,820 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 13:12:30,823 INFO L168 Benchmark]: CACSL2BoogieTranslator took 615.71 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 171.0 MB in the end (delta: -68.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-08-21 13:12:30,827 INFO L168 Benchmark]: Boogie Preprocessor took 97.95 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 167.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-08-21 13:12:30,827 INFO L168 Benchmark]: RCFGBuilder took 1452.27 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 167.1 MB in the beginning and 188.7 MB in the end (delta: -21.6 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. [2020-08-21 13:12:30,828 INFO L168 Benchmark]: TraceAbstraction took 52789.08 ms. Allocated memory was 234.4 MB in the beginning and 711.5 MB in the end (delta: 477.1 MB). Free memory was 188.7 MB in the beginning and 588.0 MB in the end (delta: -399.3 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. [2020-08-21 13:12:30,831 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 615.71 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 171.0 MB in the end (delta: -68.7 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 97.95 ms. Allocated memory is still 204.5 MB. Free memory was 171.0 MB in the beginning and 167.1 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1452.27 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 167.1 MB in the beginning and 188.7 MB in the end (delta: -21.6 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 52789.08 ms. Allocated memory was 234.4 MB in the beginning and 711.5 MB in the end (delta: 477.1 MB). Free memory was 188.7 MB in the beginning and 588.0 MB in the end (delta: -399.3 MB). Peak memory consumption was 77.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L758] int waterLevel = 1; [L759] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L945] int retValue_acc ; [L948] retValue_acc = 1 [L949] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L853] int splverifierCounter ; [L854] int tmp ; [L855] int tmp___0 ; [L856] int tmp___1 ; [L857] int tmp___2 ; [L860] splverifierCounter = 0 [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND TRUE \read(tmp) [L874] CALL waterRise() [L776] COND TRUE waterLevel < 2 [L777] waterLevel = waterLevel + 1 [L874] RET waterRise() [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___1) [L907] CALL timeShift() [L562] COND FALSE !(\read(pumpRunning)) [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND FALSE !(\read(pumpRunning)) [L635] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND TRUE ! pumpRunning [L596] CALL, EXPR isHighWaterLevel() [L731] int retValue_acc ; [L732] int tmp ; [L733] int tmp___0 ; [L737] CALL, EXPR isHighWaterSensorDry() [L838] int retValue_acc ; [L841] COND FALSE !(waterLevel < 2) [L845] retValue_acc = 0 [L846] return (retValue_acc); [L737] RET, EXPR isHighWaterSensorDry() [L737] tmp = isHighWaterSensorDry() [L739] COND FALSE !(\read(tmp)) [L742] tmp___0 = 1 [L744] retValue_acc = tmp___0 [L745] return (retValue_acc); [L596] RET, EXPR isHighWaterLevel() [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L600] CALL activatePump() [L650] int tmp ; [L654] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L654] RET, EXPR isMethaneAlarm() [L654] tmp = isMethaneAlarm() [L656] COND FALSE !(\read(tmp)) [L660] CALL activatePump__wrappee__highWaterSensor() [L645] pumpRunning = 1 [L660] RET activatePump__wrappee__highWaterSensor() [L600] RET activatePump() [L635] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L907] RET timeShift() [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND FALSE !(\read(tmp)) [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___1) [L907] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L764] COND TRUE waterLevel > 0 [L765] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND TRUE \read(pumpRunning) [L622] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L622] RET, EXPR isMethaneAlarm() [L622] tmp = isMethaneAlarm() [L624] COND FALSE !(\read(tmp)) [L630] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L630] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND FALSE !(tmp == 0) [L577] RET __utac_acc__Specification4_spec__1() [L907] RET timeShift() [L862] COND TRUE 1 [L864] COND TRUE splverifierCounter < 4 [L870] tmp = __VERIFIER_nondet_int() [L872] COND FALSE !(\read(tmp)) [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND FALSE !(\read(tmp___2)) [L898] tmp___1 = __VERIFIER_nondet_int() [L900] COND TRUE \read(tmp___1) [L907] CALL timeShift() [L562] COND TRUE \read(pumpRunning) [L564] CALL lowerWaterLevel() [L764] COND TRUE waterLevel > 0 [L765] waterLevel = waterLevel - 1 [L564] RET lowerWaterLevel() [L569] COND TRUE \read(systemActive) [L571] CALL processEnvironment() [L617] int tmp ; [L620] COND TRUE \read(pumpRunning) [L622] CALL, EXPR isMethaneAlarm() [L675] int retValue_acc ; [L679] CALL, EXPR isMethaneLevelCritical() [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); [L679] RET, EXPR isMethaneLevelCritical() [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); [L622] RET, EXPR isMethaneAlarm() [L622] tmp = isMethaneAlarm() [L624] COND FALSE !(\read(tmp)) [L630] CALL processEnvironment__wrappee__methaneQuery() [L591] int tmp ; [L594] COND FALSE !(! pumpRunning) [L609] FCALL processEnvironment__wrappee__base() [L630] RET processEnvironment__wrappee__methaneQuery() [L571] RET processEnvironment() [L577] CALL __utac_acc__Specification4_spec__1() [L148] int tmp ; [L149] int tmp___0 ; [L153] CALL, EXPR getWaterLevel() [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); [L153] RET, EXPR getWaterLevel() [L153] tmp = getWaterLevel() [L155] COND TRUE tmp == 0 [L157] CALL, EXPR isPumpRunning() [L686] int retValue_acc ; [L689] retValue_acc = pumpRunning [L690] return (retValue_acc); [L157] RET, EXPR isPumpRunning() [L157] tmp___0 = isPumpRunning() [L159] COND TRUE \read(tmp___0) [L161] CALL __automaton_fail() [L543] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 236 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.6s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 44.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1601 SDtfs, 4231 SDslu, 2037 SDs, 0 SdLazy, 11173 SolverSat, 2942 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 21.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 660 GetRequests, 452 SyntacticMatches, 7 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 836 ImplicationChecksByTransitivity, 20.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1102occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 703 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 1460 NumberOfCodeBlocks, 1460 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1245 ConstructedInterpolants, 0 QuantifiedInterpolants, 474746 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 188/217 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...