/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:01:35,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:01:35,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:01:35,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:01:35,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:01:35,539 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:01:35,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:01:35,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:01:35,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:01:35,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:01:35,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:01:35,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:01:35,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:01:35,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:01:35,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:01:35,552 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:01:35,553 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:01:35,554 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:01:35,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:01:35,558 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:01:35,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:01:35,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:01:35,563 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:01:35,564 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:01:35,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:01:35,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:01:35,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:01:35,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:01:35,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:01:35,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:01:35,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:01:35,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:01:35,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:01:35,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:01:35,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:01:35,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:01:35,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:01:35,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:01:35,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:01:35,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:01:35,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:01:35,585 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 15:01:35,604 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:01:35,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:01:35,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:01:35,607 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:01:35,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:01:35,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:01:35,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:01:35,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:01:35,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:01:35,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:01:35,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:01:35,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:01:35,609 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:01:35,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:01:35,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:01:35,610 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:01:35,610 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:01:35,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:01:35,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:01:35,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:01:35,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:01:35,611 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:01:35,612 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:01:36,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:01:36,096 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:01:36,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:01:36,102 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:01:36,103 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:01:36,104 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-09-04 15:01:36,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6edecf55c/57da53cf3f8443efb3b1ab39c7d29c1f/FLAG37fa75400 [2020-09-04 15:01:36,829 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:01:36,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product35.cil.c [2020-09-04 15:01:36,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6edecf55c/57da53cf3f8443efb3b1ab39c7d29c1f/FLAG37fa75400 [2020-09-04 15:01:37,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6edecf55c/57da53cf3f8443efb3b1ab39c7d29c1f [2020-09-04 15:01:37,090 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:01:37,092 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:01:37,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:01:37,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:01:37,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:01:37,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:01:37" (1/1) ... [2020-09-04 15:01:37,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22589b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:37, skipping insertion in model container [2020-09-04 15:01:37,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:01:37" (1/1) ... [2020-09-04 15:01:37,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:01:37,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:01:37,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:01:37,705 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:01:37,779 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:01:37,812 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:01:37,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:37 WrapperNode [2020-09-04 15:01:37,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:01:37,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:01:37,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:01:37,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:01:37,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:37" (1/1) ... [2020-09-04 15:01:37,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:37" (1/1) ... [2020-09-04 15:01:37,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:37" (1/1) ... [2020-09-04 15:01:37,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:37" (1/1) ... [2020-09-04 15:01:37,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:37" (1/1) ... [2020-09-04 15:01:37,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:37" (1/1) ... [2020-09-04 15:01:37,900 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:37" (1/1) ... [2020-09-04 15:01:37,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:01:37,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:01:37,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:01:37,916 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:01:37,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:37" (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 [2020-09-04 15:01:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:01:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:01:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:01:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:01:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:01:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:01:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:01:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:01:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:01:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:01:38,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:01:38,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:01:38,016 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:01:38,017 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:01:38,017 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:01:38,017 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:01:38,017 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:01:38,017 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:01:38,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:01:38,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:01:38,018 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:01:38,018 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:01:38,018 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:01:38,019 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:01:38,019 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:01:38,019 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:01:38,019 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:01:38,019 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:01:38,019 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:01:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:01:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:01:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:01:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:01:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:01:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:01:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:01:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:01:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:01:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:01:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:01:38,021 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:01:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:01:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:01:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:01:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:01:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:01:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:01:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:01:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:01:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:01:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:01:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:01:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:01:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:01:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:01:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:01:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:01:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:01:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:01:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:01:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:01:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:01:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:01:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:01:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:01:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:01:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:01:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:01:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:01:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:01:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:01:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:01:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:01:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:01:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:01:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:01:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:01:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:01:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:01:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:01:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:01:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:01:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:01:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:01:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:01:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:01:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:01:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:01:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:01:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:01:39,164 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:01:39,165 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:01:39,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:01:39 BoogieIcfgContainer [2020-09-04 15:01:39,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:01:39,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:01:39,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:01:39,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:01:39,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:01:37" (1/3) ... [2020-09-04 15:01:39,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740555d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:01:39, skipping insertion in model container [2020-09-04 15:01:39,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:01:37" (2/3) ... [2020-09-04 15:01:39,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740555d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:01:39, skipping insertion in model container [2020-09-04 15:01:39,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:01:39" (3/3) ... [2020-09-04 15:01:39,181 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product35.cil.c [2020-09-04 15:01:39,192 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:01:39,203 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:01:39,225 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:01:39,252 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:01:39,252 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:01:39,252 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:01:39,252 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:01:39,253 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:01:39,253 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:01:39,253 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:01:39,253 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:01:39,274 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2020-09-04 15:01:39,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:01:39,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:39,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:01:39,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:39,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:39,306 INFO L82 PathProgramCache]: Analyzing trace with hash 750514354, now seen corresponding path program 1 times [2020-09-04 15:01:39,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:39,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691675514] [2020-09-04 15:01:39,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:39,391 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:40,151 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:40,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:40,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:40,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:40,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:40,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:40,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:01:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:40,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:01:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:40,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:01:40,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691675514] [2020-09-04 15:01:40,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:40,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:01:40,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967570098] [2020-09-04 15:01:40,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:01:40,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:40,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:01:40,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:01:40,394 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2020-09-04 15:01:41,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:01:41,748 INFO L93 Difference]: Finished difference Result 439 states and 524 transitions. [2020-09-04 15:01:41,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:01:41,750 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:01:41,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:01:41,770 INFO L225 Difference]: With dead ends: 439 [2020-09-04 15:01:41,770 INFO L226 Difference]: Without dead ends: 277 [2020-09-04 15:01:41,776 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 [2020-09-04 15:01:41,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-09-04 15:01:41,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 236. [2020-09-04 15:01:41,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-09-04 15:01:41,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 255 transitions. [2020-09-04 15:01:41,927 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 255 transitions. Word has length 142 [2020-09-04 15:01:41,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:01:41,928 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 255 transitions. [2020-09-04 15:01:41,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:01:41,928 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 255 transitions. [2020-09-04 15:01:41,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:01:41,939 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:41,940 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:01:41,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:01:41,940 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:41,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:41,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1453121021, now seen corresponding path program 1 times [2020-09-04 15:01:41,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:41,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934690934] [2020-09-04 15:01:41,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:41,945 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:42,393 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:42,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:42,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:42,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:42,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:42,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:42,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:42,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:01:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:42,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:01:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:42,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:01:42,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934690934] [2020-09-04 15:01:42,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:42,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:01:42,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760278391] [2020-09-04 15:01:42,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:01:42,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:42,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:01:42,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:01:42,508 INFO L87 Difference]: Start difference. First operand 236 states and 255 transitions. Second operand 4 states. [2020-09-04 15:01:43,121 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:01:43,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:01:43,946 INFO L93 Difference]: Finished difference Result 347 states and 389 transitions. [2020-09-04 15:01:43,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:01:43,947 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:01:43,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:01:43,951 INFO L225 Difference]: With dead ends: 347 [2020-09-04 15:01:43,951 INFO L226 Difference]: Without dead ends: 260 [2020-09-04 15:01:43,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:01:43,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-09-04 15:01:44,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 226. [2020-09-04 15:01:44,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-04 15:01:44,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 242 transitions. [2020-09-04 15:01:44,021 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 242 transitions. Word has length 143 [2020-09-04 15:01:44,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:01:44,022 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 242 transitions. [2020-09-04 15:01:44,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:01:44,022 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 242 transitions. [2020-09-04 15:01:44,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-04 15:01:44,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:44,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:01:44,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:01:44,025 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:44,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:44,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1038765417, now seen corresponding path program 1 times [2020-09-04 15:01:44,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:44,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368830190] [2020-09-04 15:01:44,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:44,029 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,462 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:44,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:01:44,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 15:01:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:44,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:01:44,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368830190] [2020-09-04 15:01:44,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:44,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:01:44,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075620606] [2020-09-04 15:01:44,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:01:44,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:44,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:01:44,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:01:44,635 INFO L87 Difference]: Start difference. First operand 226 states and 242 transitions. Second operand 9 states. [2020-09-04 15:01:45,116 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:01:45,526 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:01:45,833 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:01:46,138 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:46,453 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:01:46,777 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:47,761 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:01:49,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:01:49,530 INFO L93 Difference]: Finished difference Result 585 states and 671 transitions. [2020-09-04 15:01:49,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:01:49,531 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 152 [2020-09-04 15:01:49,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:01:49,559 INFO L225 Difference]: With dead ends: 585 [2020-09-04 15:01:49,560 INFO L226 Difference]: Without dead ends: 469 [2020-09-04 15:01:49,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-04 15:01:49,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2020-09-04 15:01:49,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 394. [2020-09-04 15:01:49,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-09-04 15:01:49,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 436 transitions. [2020-09-04 15:01:49,701 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 436 transitions. Word has length 152 [2020-09-04 15:01:49,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:01:49,701 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 436 transitions. [2020-09-04 15:01:49,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:01:49,702 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 436 transitions. [2020-09-04 15:01:49,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-04 15:01:49,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:49,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:01:49,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:01:49,705 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:49,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:49,705 INFO L82 PathProgramCache]: Analyzing trace with hash -66041728, now seen corresponding path program 1 times [2020-09-04 15:01:49,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:49,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561749336] [2020-09-04 15:01:49,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:49,708 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:49,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,079 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:50,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:50,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 15:01:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:01:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 15:01:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 15:01:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:50,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:01:50,228 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561749336] [2020-09-04 15:01:50,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:50,229 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 15:01:50,229 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470991345] [2020-09-04 15:01:50,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 15:01:50,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:50,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 15:01:50,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-04 15:01:50,230 INFO L87 Difference]: Start difference. First operand 394 states and 436 transitions. Second operand 6 states. [2020-09-04 15:01:50,797 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:01:52,448 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:01:53,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:01:53,038 INFO L93 Difference]: Finished difference Result 984 states and 1157 transitions. [2020-09-04 15:01:53,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 15:01:53,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 160 [2020-09-04 15:01:53,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:01:53,046 INFO L225 Difference]: With dead ends: 984 [2020-09-04 15:01:53,046 INFO L226 Difference]: Without dead ends: 700 [2020-09-04 15:01:53,049 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:01:53,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-09-04 15:01:53,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 584. [2020-09-04 15:01:53,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-09-04 15:01:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 646 transitions. [2020-09-04 15:01:53,265 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 646 transitions. Word has length 160 [2020-09-04 15:01:53,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:01:53,266 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 646 transitions. [2020-09-04 15:01:53,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 15:01:53,266 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 646 transitions. [2020-09-04 15:01:53,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-04 15:01:53,268 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:53,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:01:53,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:01:53,269 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:53,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:53,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1164437593, now seen corresponding path program 1 times [2020-09-04 15:01:53,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:53,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777576367] [2020-09-04 15:01:53,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:53,272 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,620 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:53,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:01:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:01:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:01:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:01:53,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777576367] [2020-09-04 15:01:53,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:53,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:01:53,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793989942] [2020-09-04 15:01:53,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:01:53,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:53,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:01:53,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:01:53,814 INFO L87 Difference]: Start difference. First operand 584 states and 646 transitions. Second operand 9 states. [2020-09-04 15:01:54,287 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:01:55,397 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:55,671 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:01:55,991 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:56,323 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:01:56,585 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:01:56,877 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:57,176 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:01:57,626 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:01:58,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:01:58,998 INFO L93 Difference]: Finished difference Result 1577 states and 1836 transitions. [2020-09-04 15:01:58,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:01:58,998 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-04 15:01:58,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:01:59,007 INFO L225 Difference]: With dead ends: 1577 [2020-09-04 15:01:59,008 INFO L226 Difference]: Without dead ends: 1103 [2020-09-04 15:01:59,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:01:59,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-09-04 15:01:59,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 975. [2020-09-04 15:01:59,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-09-04 15:01:59,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1086 transitions. [2020-09-04 15:01:59,430 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1086 transitions. Word has length 161 [2020-09-04 15:01:59,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:01:59,430 INFO L479 AbstractCegarLoop]: Abstraction has 975 states and 1086 transitions. [2020-09-04 15:01:59,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:01:59,431 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1086 transitions. [2020-09-04 15:01:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 15:01:59,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:01:59,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:01:59,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:01:59,434 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:01:59,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:01:59,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1435242309, now seen corresponding path program 1 times [2020-09-04 15:01:59,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:01:59,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520700732] [2020-09-04 15:01:59,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:01:59,438 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:01:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:59,817 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:01:59,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:01:59,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:59,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:01:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:59,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:01:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:59,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:01:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:59,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:01:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:59,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:01:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:59,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:01:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:59,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:01:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:59,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:01:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:01:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:01:59,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520700732] [2020-09-04 15:01:59,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:01:59,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:01:59,984 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536337208] [2020-09-04 15:01:59,984 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:01:59,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:01:59,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:01:59,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:01:59,985 INFO L87 Difference]: Start difference. First operand 975 states and 1086 transitions. Second operand 10 states. [2020-09-04 15:02:00,461 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:01,905 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:02,248 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:02,607 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:02,933 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:03,230 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:03,864 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:04,180 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:04,550 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:05,412 INFO L93 Difference]: Finished difference Result 1235 states and 1449 transitions. [2020-09-04 15:02:05,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:02:05,413 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-09-04 15:02:05,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:05,420 INFO L225 Difference]: With dead ends: 1235 [2020-09-04 15:02:05,420 INFO L226 Difference]: Without dead ends: 1232 [2020-09-04 15:02:05,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-04 15:02:05,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1232 states. [2020-09-04 15:02:05,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1232 to 975. [2020-09-04 15:02:05,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 975 states. [2020-09-04 15:02:05,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1083 transitions. [2020-09-04 15:02:05,746 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1083 transitions. Word has length 166 [2020-09-04 15:02:05,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:05,747 INFO L479 AbstractCegarLoop]: Abstraction has 975 states and 1083 transitions. [2020-09-04 15:02:05,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:02:05,747 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1083 transitions. [2020-09-04 15:02:05,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-04 15:02:05,750 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:05,751 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:02:05,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:02:05,751 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:05,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:05,751 INFO L82 PathProgramCache]: Analyzing trace with hash 350443365, now seen corresponding path program 1 times [2020-09-04 15:02:05,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:05,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269559749] [2020-09-04 15:02:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:05,754 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,032 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:06,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:06,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:02:06,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:02:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:02:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:02:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-04 15:02:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 15:02:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:02:06,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269559749] [2020-09-04 15:02:06,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:06,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:02:06,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616421595] [2020-09-04 15:02:06,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:02:06,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:06,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:02:06,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:02:06,200 INFO L87 Difference]: Start difference. First operand 975 states and 1083 transitions. Second operand 10 states. [2020-09-04 15:02:07,614 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:07,936 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:02:08,271 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:02:08,590 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:08,935 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:09,242 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:10,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:10,363 INFO L93 Difference]: Finished difference Result 2241 states and 2651 transitions. [2020-09-04 15:02:10,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 15:02:10,365 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 190 [2020-09-04 15:02:10,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:10,373 INFO L225 Difference]: With dead ends: 2241 [2020-09-04 15:02:10,373 INFO L226 Difference]: Without dead ends: 1376 [2020-09-04 15:02:10,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-09-04 15:02:10,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-04 15:02:10,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1007. [2020-09-04 15:02:10,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1007 states. [2020-09-04 15:02:10,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1115 transitions. [2020-09-04 15:02:10,651 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1115 transitions. Word has length 190 [2020-09-04 15:02:10,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:10,652 INFO L479 AbstractCegarLoop]: Abstraction has 1007 states and 1115 transitions. [2020-09-04 15:02:10,652 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:02:10,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1115 transitions. [2020-09-04 15:02:10,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-04 15:02:10,654 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:10,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:02:10,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:02:10,655 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:10,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:10,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1071797499, now seen corresponding path program 1 times [2020-09-04 15:02:10,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:10,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876877273] [2020-09-04 15:02:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:10,658 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:11,007 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:11,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:11,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:11,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:11,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:11,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:11,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:11,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:11,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:11,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:11,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:02:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:11,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:02:11,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:11,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:02:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:11,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:02:11,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:11,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-04 15:02:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 15:02:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:11,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:02:11,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876877273] [2020-09-04 15:02:11,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:11,255 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 15:02:11,255 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466700115] [2020-09-04 15:02:11,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 15:02:11,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:11,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 15:02:11,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-04 15:02:11,256 INFO L87 Difference]: Start difference. First operand 1007 states and 1115 transitions. Second operand 13 states. [2020-09-04 15:02:11,839 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:12,150 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:02:12,453 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:12,757 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:13,046 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:13,998 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:14,323 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:14,652 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:14,996 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:15,301 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:16,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:16,786 INFO L93 Difference]: Finished difference Result 2317 states and 2760 transitions. [2020-09-04 15:02:16,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 15:02:16,787 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 190 [2020-09-04 15:02:16,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:16,794 INFO L225 Difference]: With dead ends: 2317 [2020-09-04 15:02:16,794 INFO L226 Difference]: Without dead ends: 1420 [2020-09-04 15:02:16,797 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=110, Invalid=442, Unknown=0, NotChecked=0, Total=552 [2020-09-04 15:02:16,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2020-09-04 15:02:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1031. [2020-09-04 15:02:17,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1031 states. [2020-09-04 15:02:17,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1139 transitions. [2020-09-04 15:02:17,238 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1139 transitions. Word has length 190 [2020-09-04 15:02:17,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:17,239 INFO L479 AbstractCegarLoop]: Abstraction has 1031 states and 1139 transitions. [2020-09-04 15:02:17,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 15:02:17,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1139 transitions. [2020-09-04 15:02:17,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-04 15:02:17,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:17,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:02:17,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:02:17,243 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:17,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:17,243 INFO L82 PathProgramCache]: Analyzing trace with hash -863448728, now seen corresponding path program 1 times [2020-09-04 15:02:17,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:17,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25754399] [2020-09-04 15:02:17,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:17,246 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:17,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,604 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:17,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:17,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:17,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:02:17,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:02:17,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:02:17,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:02:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-09-04 15:02:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 15:02:17,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 15:02:17,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25754399] [2020-09-04 15:02:17,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:17,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 15:02:17,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127226314] [2020-09-04 15:02:17,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 15:02:17,887 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:17,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 15:02:17,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:02:17,888 INFO L87 Difference]: Start difference. First operand 1031 states and 1139 transitions. Second operand 7 states. [2020-09-04 15:02:18,548 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:19,148 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:22,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:22,028 INFO L93 Difference]: Finished difference Result 3474 states and 4215 transitions. [2020-09-04 15:02:22,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:02:22,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-04 15:02:22,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:22,043 INFO L225 Difference]: With dead ends: 3474 [2020-09-04 15:02:22,043 INFO L226 Difference]: Without dead ends: 2553 [2020-09-04 15:02:22,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:02:22,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2020-09-04 15:02:22,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 2075. [2020-09-04 15:02:22,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2075 states. [2020-09-04 15:02:22,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2075 states to 2075 states and 2355 transitions. [2020-09-04 15:02:22,833 INFO L78 Accepts]: Start accepts. Automaton has 2075 states and 2355 transitions. Word has length 190 [2020-09-04 15:02:22,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:22,834 INFO L479 AbstractCegarLoop]: Abstraction has 2075 states and 2355 transitions. [2020-09-04 15:02:22,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 15:02:22,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2075 states and 2355 transitions. [2020-09-04 15:02:22,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-04 15:02:22,837 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:22,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:02:22,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:02:22,838 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:22,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:22,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1653898682, now seen corresponding path program 1 times [2020-09-04 15:02:22,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:22,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76491371] [2020-09-04 15:02:22,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:22,841 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:02:22,911 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:02:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:02:22,977 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:02:23,190 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:02:23,190 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:02:23,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:02:23,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:02:23 BoogieIcfgContainer [2020-09-04 15:02:23,239 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:02:23,244 INFO L168 Benchmark]: Toolchain (without parser) took 46149.52 ms. Allocated memory was 138.9 MB in the beginning and 906.5 MB in the end (delta: 767.6 MB). Free memory was 102.5 MB in the beginning and 519.5 MB in the end (delta: -417.0 MB). Peak memory consumption was 350.5 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:23,253 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:02:23,254 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.99 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 172.3 MB in the end (delta: -70.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:23,258 INFO L168 Benchmark]: Boogie Preprocessor took 101.73 ms. Allocated memory is still 202.9 MB. Free memory was 172.3 MB in the beginning and 168.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:23,259 INFO L168 Benchmark]: RCFGBuilder took 1256.55 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 168.2 MB in the beginning and 179.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:23,268 INFO L168 Benchmark]: TraceAbstraction took 44065.87 ms. Allocated memory was 236.5 MB in the beginning and 906.5 MB in the end (delta: 670.0 MB). Free memory was 179.2 MB in the beginning and 519.5 MB in the end (delta: -340.3 MB). Peak memory consumption was 329.7 MB. Max. memory is 7.1 GB. [2020-09-04 15:02:23,272 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 715.99 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 172.3 MB in the end (delta: -70.1 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.73 ms. Allocated memory is still 202.9 MB. Free memory was 172.3 MB in the beginning and 168.2 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1256.55 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 168.2 MB in the beginning and 179.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 44065.87 ms. Allocated memory was 236.5 MB in the beginning and 906.5 MB in the end (delta: 670.0 MB). Free memory was 179.2 MB in the beginning and 519.5 MB in the end (delta: -340.3 MB). Peak memory consumption was 329.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 145]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L250] int pumpRunning = 0; [L251] int systemActive = 1; [L455] int cleanupTimeShifts = 4; [L720] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L528] int retValue_acc ; [L529] int tmp ; [L533] FCALL select_helpers() [L534] FCALL select_features() [L535] CALL, EXPR valid_product() [L446] int retValue_acc ; [L449] retValue_acc = 1 [L450] return (retValue_acc); [L535] RET, EXPR valid_product() [L535] tmp = valid_product() [L537] COND TRUE \read(tmp) [L539] FCALL setup() [L540] CALL runTest() [L522] CALL test() [L181] int splverifierCounter ; [L182] int tmp ; [L183] int tmp___0 ; [L184] int tmp___1 ; [L185] int tmp___2 ; [L188] splverifierCounter = 0 [L190] COND TRUE 1 [L192] COND TRUE splverifierCounter < 4 [L198] tmp = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp) [L202] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L202] RET waterRise() [L208] tmp___0 = __VERIFIER_nondet_int() [L210] COND TRUE \read(tmp___0) [L212] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L212] RET changeMethaneLevel() [L218] tmp___2 = __VERIFIER_nondet_int() [L220] COND TRUE \read(tmp___2) [L235] CALL timeShift() [L257] COND FALSE !(\read(pumpRunning)) [L264] COND TRUE \read(systemActive) [L266] CALL processEnvironment() [L286] int tmp ; [L289] COND TRUE ! pumpRunning [L291] CALL, EXPR isHighWaterLevel() [L383] int retValue_acc ; [L384] int tmp ; [L385] int tmp___0 ; [L389] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L389] RET, EXPR isHighWaterSensorDry() [L389] tmp = isHighWaterSensorDry() [L391] COND FALSE !(\read(tmp)) [L394] tmp___0 = 1 [L396] retValue_acc = tmp___0 [L397] return (retValue_acc); [L291] RET, EXPR isHighWaterLevel() [L291] tmp = isHighWaterLevel() [L293] COND TRUE \read(tmp) [L295] CALL activatePump() [L314] pumpRunning = 1 [L295] RET activatePump() [L266] RET processEnvironment() [L272] CALL __utac_acc__Specification1_spec__1() [L152] int tmp ; [L153] int tmp___0 ; [L157] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L157] RET, EXPR isMethaneLevelCritical() [L157] tmp = isMethaneLevelCritical() [L159] COND TRUE \read(tmp) [L161] CALL, EXPR isPumpRunning() [L338] int retValue_acc ; [L341] retValue_acc = pumpRunning [L342] return (retValue_acc); [L161] RET, EXPR isPumpRunning() [L161] tmp___0 = isPumpRunning() [L163] COND TRUE \read(tmp___0) [L165] CALL __automaton_fail() [L145] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 612 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 43.9s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 35.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2019 SDtfs, 3655 SDslu, 3832 SDs, 0 SdLazy, 7358 SolverSat, 1104 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 322 GetRequests, 204 SyntacticMatches, 3 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 15.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2075occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 9 MinimizatonAttempts, 1887 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...