/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_product44.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:02:35,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:02:35,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:02:35,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:02:35,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:02:35,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:02:35,640 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:02:35,642 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:02:35,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:02:35,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:02:35,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:02:35,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:02:35,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:02:35,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:02:35,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:02:35,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:02:35,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:02:35,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:02:35,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:02:35,657 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:02:35,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:02:35,660 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:02:35,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:02:35,662 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:02:35,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:02:35,665 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:02:35,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:02:35,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:02:35,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:02:35,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:02:35,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:02:35,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:02:35,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:02:35,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:02:35,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:02:35,672 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:02:35,673 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:02:35,673 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:02:35,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:02:35,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:02:35,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:02:35,676 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 15:02:35,688 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:02:35,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:02:35,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:02:35,690 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:02:35,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:02:35,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:02:35,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:02:35,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:02:35,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:02:35,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:02:35,692 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:02:35,692 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:02:35,692 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:02:35,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:02:35,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:02:35,693 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:02:35,693 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:02:35,693 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:02:35,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:02:35,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:02:35,694 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:02:35,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:02:35,694 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:02:36,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:02:36,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:02:36,140 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:02:36,142 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:02:36,142 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:02:36,144 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-09-04 15:02:36,221 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afff7aa3f/85800b898164447f9dd3fbe1d52ce776/FLAG424f27a81 [2020-09-04 15:02:36,806 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:02:36,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product44.cil.c [2020-09-04 15:02:36,821 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afff7aa3f/85800b898164447f9dd3fbe1d52ce776/FLAG424f27a81 [2020-09-04 15:02:37,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/afff7aa3f/85800b898164447f9dd3fbe1d52ce776 [2020-09-04 15:02:37,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:02:37,100 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:02:37,101 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:02:37,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:02:37,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:02:37,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:02:37" (1/1) ... [2020-09-04 15:02:37,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11a529ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:37, skipping insertion in model container [2020-09-04 15:02:37,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:02:37" (1/1) ... [2020-09-04 15:02:37,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:02:37,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:02:37,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:02:37,716 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:02:37,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:02:37,840 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:02:37,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:37 WrapperNode [2020-09-04 15:02:37,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:02:37,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:02:37,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:02:37,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:02:37,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:37" (1/1) ... [2020-09-04 15:02:37,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:37" (1/1) ... [2020-09-04 15:02:37,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:37" (1/1) ... [2020-09-04 15:02:37,877 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:37" (1/1) ... [2020-09-04 15:02:37,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:37" (1/1) ... [2020-09-04 15:02:37,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:37" (1/1) ... [2020-09-04 15:02:37,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:37" (1/1) ... [2020-09-04 15:02:37,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:02:37,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:02:37,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:02:37,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:02:37,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:37" (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 15:02:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:02:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:02:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:02:38,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:02:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:02:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:02:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:02:38,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:02:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:02:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:02:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:02:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:02:38,015 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:02:38,016 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:02:38,016 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:02:38,016 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:02:38,016 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:02:38,016 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:02:38,017 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:02:38,018 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:02:38,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:02:38,019 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:02:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-04 15:02:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:02:38,020 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:02:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:02:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:02:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:02:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:02:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:02:38,021 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:02:38,022 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:02:38,022 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:02:38,022 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:02:38,022 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:02:38,022 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:02:38,022 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:02:38,023 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:02:38,023 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:02:38,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:02:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:02:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:02:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:02:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:02:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:02:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:02:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:02:38,024 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:02:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:02:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:02:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:02:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:02:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:02:38,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:02:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:02:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:02:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:02:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:02:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:02:38,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-04 15:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:02:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:02:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:02:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:02:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:02:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:02:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-09-04 15:02:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:02:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:02:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:02:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:02:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:02:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:02:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:02:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:02:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:02:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:02:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:02:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:02:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:02:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:02:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:02:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:02:38,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:02:39,268 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:02:39,269 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:02:39,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:02:39 BoogieIcfgContainer [2020-09-04 15:02:39,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:02:39,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:02:39,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:02:39,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:02:39,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:02:37" (1/3) ... [2020-09-04 15:02:39,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cb27f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:02:39, skipping insertion in model container [2020-09-04 15:02:39,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:02:37" (2/3) ... [2020-09-04 15:02:39,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8cb27f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:02:39, skipping insertion in model container [2020-09-04 15:02:39,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:02:39" (3/3) ... [2020-09-04 15:02:39,286 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product44.cil.c [2020-09-04 15:02:39,300 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:02:39,311 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:02:39,335 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:02:39,362 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:02:39,363 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:02:39,363 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:02:39,363 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:02:39,363 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:02:39,363 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:02:39,364 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:02:39,364 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:02:39,387 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states. [2020-09-04 15:02:39,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-04 15:02:39,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:39,412 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 15:02:39,413 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:39,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:39,421 INFO L82 PathProgramCache]: Analyzing trace with hash -382402386, now seen corresponding path program 1 times [2020-09-04 15:02:39,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:39,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066958151] [2020-09-04 15:02:39,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:39,528 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,268 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:40,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:40,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:40,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:02:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:40,416 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 15:02:40,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066958151] [2020-09-04 15:02:40,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:40,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 15:02:40,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757468011] [2020-09-04 15:02:40,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 15:02:40,428 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:40,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 15:02:40,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 15:02:40,449 INFO L87 Difference]: Start difference. First operand 308 states. Second operand 3 states. [2020-09-04 15:02:41,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:41,802 INFO L93 Difference]: Finished difference Result 484 states and 574 transitions. [2020-09-04 15:02:41,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 15:02:41,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 142 [2020-09-04 15:02:41,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:41,826 INFO L225 Difference]: With dead ends: 484 [2020-09-04 15:02:41,826 INFO L226 Difference]: Without dead ends: 301 [2020-09-04 15:02:41,832 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 15:02:41,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-09-04 15:02:41,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 257. [2020-09-04 15:02:41,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-09-04 15:02:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 278 transitions. [2020-09-04 15:02:41,990 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 278 transitions. Word has length 142 [2020-09-04 15:02:41,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:41,991 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 278 transitions. [2020-09-04 15:02:41,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 15:02:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 278 transitions. [2020-09-04 15:02:42,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-04 15:02:42,003 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:42,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:02:42,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:02:42,004 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:42,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:42,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1833447387, now seen corresponding path program 1 times [2020-09-04 15:02:42,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:42,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176223562] [2020-09-04 15:02:42,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:42,010 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,530 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:42,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:42,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:02:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 15:02:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:42,640 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 15:02:42,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176223562] [2020-09-04 15:02:42,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:42,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:02:42,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141385602] [2020-09-04 15:02:42,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:02:42,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:42,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:02:42,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:02:42,644 INFO L87 Difference]: Start difference. First operand 257 states and 278 transitions. Second operand 4 states. [2020-09-04 15:02:43,304 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:44,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:44,333 INFO L93 Difference]: Finished difference Result 388 states and 435 transitions. [2020-09-04 15:02:44,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 15:02:44,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 143 [2020-09-04 15:02:44,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:44,339 INFO L225 Difference]: With dead ends: 388 [2020-09-04 15:02:44,339 INFO L226 Difference]: Without dead ends: 284 [2020-09-04 15:02:44,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:02:44,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-09-04 15:02:44,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 247. [2020-09-04 15:02:44,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-09-04 15:02:44,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 265 transitions. [2020-09-04 15:02:44,468 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 265 transitions. Word has length 143 [2020-09-04 15:02:44,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:44,469 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 265 transitions. [2020-09-04 15:02:44,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:02:44,469 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 265 transitions. [2020-09-04 15:02:44,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-04 15:02:44,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:44,472 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] [2020-09-04 15:02:44,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:02:44,472 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:44,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:44,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1272206935, now seen corresponding path program 1 times [2020-09-04 15:02:44,473 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:44,473 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405175887] [2020-09-04 15:02:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:44,476 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:44,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,866 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:44,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 15:02:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:02:44,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:44,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:02:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:45,005 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 15:02:45,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405175887] [2020-09-04 15:02:45,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:45,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:02:45,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823000735] [2020-09-04 15:02:45,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:02:45,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:45,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:02:45,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:02:45,008 INFO L87 Difference]: Start difference. First operand 247 states and 265 transitions. Second operand 10 states. [2020-09-04 15:02:45,568 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:45,961 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:02:46,279 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:02:46,593 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:46,932 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:47,227 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:48,223 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:50,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:50,674 INFO L93 Difference]: Finished difference Result 676 states and 783 transitions. [2020-09-04 15:02:50,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:02:50,675 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 156 [2020-09-04 15:02:50,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:50,681 INFO L225 Difference]: With dead ends: 676 [2020-09-04 15:02:50,681 INFO L226 Difference]: Without dead ends: 539 [2020-09-04 15:02:50,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:02:50,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-09-04 15:02:50,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 432. [2020-09-04 15:02:50,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432 states. [2020-09-04 15:02:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 478 transitions. [2020-09-04 15:02:50,828 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 478 transitions. Word has length 156 [2020-09-04 15:02:50,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:50,829 INFO L479 AbstractCegarLoop]: Abstraction has 432 states and 478 transitions. [2020-09-04 15:02:50,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:02:50,830 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 478 transitions. [2020-09-04 15:02:50,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-04 15:02:50,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:50,833 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 15:02:50,833 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:02:50,834 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:50,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:50,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1170641190, now seen corresponding path program 1 times [2020-09-04 15:02:50,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:50,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680999194] [2020-09-04 15:02:50,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:50,838 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,279 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:51,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:51,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 15:02:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-04 15:02:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:02:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:51,546 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 15:02:51,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680999194] [2020-09-04 15:02:51,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:51,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:02:51,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110746265] [2020-09-04 15:02:51,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:02:51,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:51,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:02:51,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:02:51,549 INFO L87 Difference]: Start difference. First operand 432 states and 478 transitions. Second operand 9 states. [2020-09-04 15:02:52,054 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:53,518 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:53,834 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:54,194 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:54,516 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:02:54,816 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:02:55,127 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:55,417 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:02:55,883 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:02:57,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:02:57,217 INFO L93 Difference]: Finished difference Result 1194 states and 1418 transitions. [2020-09-04 15:02:57,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:02:57,218 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 161 [2020-09-04 15:02:57,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:02:57,226 INFO L225 Difference]: With dead ends: 1194 [2020-09-04 15:02:57,226 INFO L226 Difference]: Without dead ends: 872 [2020-09-04 15:02:57,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:02:57,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-09-04 15:02:57,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 715. [2020-09-04 15:02:57,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2020-09-04 15:02:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 802 transitions. [2020-09-04 15:02:57,459 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 802 transitions. Word has length 161 [2020-09-04 15:02:57,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:02:57,459 INFO L479 AbstractCegarLoop]: Abstraction has 715 states and 802 transitions. [2020-09-04 15:02:57,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:02:57,460 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 802 transitions. [2020-09-04 15:02:57,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 15:02:57,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:02:57,463 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 15:02:57,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:02:57,464 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:02:57,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:02:57,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1400803721, now seen corresponding path program 1 times [2020-09-04 15:02:57,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:02:57,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189520796] [2020-09-04 15:02:57,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:02:57,467 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:02:57,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,816 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:02:57,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:02:57,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:02:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:02:57,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:02:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:02:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:02:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:02:57,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:02:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:57,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:02:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:02:58,039 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 15:02:58,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189520796] [2020-09-04 15:02:58,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:02:58,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:02:58,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607163508] [2020-09-04 15:02:58,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:02:58,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:02:58,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:02:58,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:02:58,043 INFO L87 Difference]: Start difference. First operand 715 states and 802 transitions. Second operand 10 states. [2020-09-04 15:02:58,811 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:00,268 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:00,575 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:00,921 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:01,287 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:01,583 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:02,361 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:02,629 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:02,984 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:04,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:04,042 INFO L93 Difference]: Finished difference Result 1863 states and 2253 transitions. [2020-09-04 15:03:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:03:04,045 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 166 [2020-09-04 15:03:04,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:04,058 INFO L225 Difference]: With dead ends: 1863 [2020-09-04 15:03:04,058 INFO L226 Difference]: Without dead ends: 1258 [2020-09-04 15:03:04,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-04 15:03:04,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-09-04 15:03:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1013. [2020-09-04 15:03:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-09-04 15:03:04,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1157 transitions. [2020-09-04 15:03:04,454 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1157 transitions. Word has length 166 [2020-09-04 15:03:04,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:04,455 INFO L479 AbstractCegarLoop]: Abstraction has 1013 states and 1157 transitions. [2020-09-04 15:03:04,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:03:04,455 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1157 transitions. [2020-09-04 15:03:04,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-04 15:03:04,461 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:04,461 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:04,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:03:04,462 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:04,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:04,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1314188149, now seen corresponding path program 1 times [2020-09-04 15:03:04,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:04,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373189762] [2020-09-04 15:03:04,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:04,466 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,823 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:04,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:04,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:04,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:04,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:04,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:03:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:03:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:05,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:05,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:05,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:03:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:05,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-04 15:03:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:05,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 15:03:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:05,080 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 15:03:05,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373189762] [2020-09-04 15:03:05,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:05,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:03:05,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507755721] [2020-09-04 15:03:05,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:03:05,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:05,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:03:05,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:03:05,083 INFO L87 Difference]: Start difference. First operand 1013 states and 1157 transitions. Second operand 11 states. [2020-09-04 15:03:06,556 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:06,881 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:07,231 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:03:07,563 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:07,885 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:08,180 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:10,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:10,134 INFO L93 Difference]: Finished difference Result 2528 states and 3208 transitions. [2020-09-04 15:03:10,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 15:03:10,135 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 216 [2020-09-04 15:03:10,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:10,145 INFO L225 Difference]: With dead ends: 2528 [2020-09-04 15:03:10,145 INFO L226 Difference]: Without dead ends: 1625 [2020-09-04 15:03:10,149 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:03:10,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2020-09-04 15:03:10,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1051. [2020-09-04 15:03:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2020-09-04 15:03:10,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1195 transitions. [2020-09-04 15:03:10,590 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1195 transitions. Word has length 216 [2020-09-04 15:03:10,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:10,591 INFO L479 AbstractCegarLoop]: Abstraction has 1051 states and 1195 transitions. [2020-09-04 15:03:10,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:03:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1195 transitions. [2020-09-04 15:03:10,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-04 15:03:10,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:10,597 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:10,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:03:10,597 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:10,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:10,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1226108971, now seen corresponding path program 1 times [2020-09-04 15:03:10,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:10,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196092546] [2020-09-04 15:03:10,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:10,601 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:10,947 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:10,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:10,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:10,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:10,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:10,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:11,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:03:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:03:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:03:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-04 15:03:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 15:03:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:11,256 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 15:03:11,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196092546] [2020-09-04 15:03:11,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:11,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:03:11,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283442743] [2020-09-04 15:03:11,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:03:11,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:11,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:03:11,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:03:11,258 INFO L87 Difference]: Start difference. First operand 1051 states and 1195 transitions. Second operand 14 states. [2020-09-04 15:03:11,880 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-09-04 15:03:12,195 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:12,503 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:12,803 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:13,100 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:14,266 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:14,627 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:14,989 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:15,350 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:15,673 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:03:18,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:18,153 INFO L93 Difference]: Finished difference Result 2602 states and 3278 transitions. [2020-09-04 15:03:18,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 15:03:18,155 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 216 [2020-09-04 15:03:18,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:18,167 INFO L225 Difference]: With dead ends: 2602 [2020-09-04 15:03:18,167 INFO L226 Difference]: Without dead ends: 1661 [2020-09-04 15:03:18,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-04 15:03:18,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2020-09-04 15:03:18,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1075. [2020-09-04 15:03:18,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2020-09-04 15:03:18,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1219 transitions. [2020-09-04 15:03:18,644 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1219 transitions. Word has length 216 [2020-09-04 15:03:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:18,644 INFO L479 AbstractCegarLoop]: Abstraction has 1075 states and 1219 transitions. [2020-09-04 15:03:18,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:03:18,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1219 transitions. [2020-09-04 15:03:18,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-04 15:03:18,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:18,649 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:18,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:03:18,649 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:18,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:18,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1898830414, now seen corresponding path program 1 times [2020-09-04 15:03:18,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:18,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505384407] [2020-09-04 15:03:18,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:18,653 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,032 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:19,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:19,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 15:03:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-09-04 15:03:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:03:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:19,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:03:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-04 15:03:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 15:03:19,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:19,272 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 15:03:19,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505384407] [2020-09-04 15:03:19,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:19,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:03:19,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523034293] [2020-09-04 15:03:19,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:03:19,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:19,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:03:19,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:03:19,274 INFO L87 Difference]: Start difference. First operand 1075 states and 1219 transitions. Second operand 8 states. [2020-09-04 15:03:19,909 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:20,580 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:25,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:25,317 INFO L93 Difference]: Finished difference Result 4079 states and 5184 transitions. [2020-09-04 15:03:25,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 15:03:25,318 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2020-09-04 15:03:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:25,336 INFO L225 Difference]: With dead ends: 4079 [2020-09-04 15:03:25,336 INFO L226 Difference]: Without dead ends: 3114 [2020-09-04 15:03:25,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2020-09-04 15:03:25,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3114 states. [2020-09-04 15:03:26,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3114 to 2215. [2020-09-04 15:03:26,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2215 states. [2020-09-04 15:03:26,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2547 transitions. [2020-09-04 15:03:26,344 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2547 transitions. Word has length 216 [2020-09-04 15:03:26,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:26,345 INFO L479 AbstractCegarLoop]: Abstraction has 2215 states and 2547 transitions. [2020-09-04 15:03:26,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:03:26,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2547 transitions. [2020-09-04 15:03:26,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-04 15:03:26,352 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:26,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:26,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:03:26,353 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:26,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:26,353 INFO L82 PathProgramCache]: Analyzing trace with hash 182911630, now seen corresponding path program 1 times [2020-09-04 15:03:26,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:26,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888015618] [2020-09-04 15:03:26,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:26,360 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:26,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,720 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-09-04 15:03:26,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:03:26,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-04 15:03:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-04 15:03:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 15:03:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 15:03:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-04 15:03:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:03:26,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:03:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-09-04 15:03:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:03:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:03:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:26,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:03:26,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:03:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:03:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-09-04 15:03:27,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-09-04 15:03:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:03:27,309 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 15:03:27,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888015618] [2020-09-04 15:03:27,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:03:27,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-09-04 15:03:27,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731222365] [2020-09-04 15:03:27,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-04 15:03:27,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:03:27,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-04 15:03:27,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:03:27,311 INFO L87 Difference]: Start difference. First operand 2215 states and 2547 transitions. Second operand 21 states. [2020-09-04 15:03:27,948 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:28,389 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:03:28,727 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:03:29,064 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:29,392 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:03:29,697 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:30,780 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-09-04 15:03:31,907 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:32,299 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:32,823 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:33,213 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:35,279 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:35,684 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:36,015 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:36,419 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:36,799 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:37,179 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:37,530 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:03:37,876 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:03:38,569 WARN L193 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-09-04 15:03:39,322 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 190 [2020-09-04 15:03:39,963 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-09-04 15:03:43,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:03:43,892 INFO L93 Difference]: Finished difference Result 5125 states and 6243 transitions. [2020-09-04 15:03:43,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-09-04 15:03:43,893 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 221 [2020-09-04 15:03:43,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:03:43,920 INFO L225 Difference]: With dead ends: 5125 [2020-09-04 15:03:43,921 INFO L226 Difference]: Without dead ends: 3020 [2020-09-04 15:03:43,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1147 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=830, Invalid=3592, Unknown=0, NotChecked=0, Total=4422 [2020-09-04 15:03:43,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2020-09-04 15:03:44,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 2135. [2020-09-04 15:03:44,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2020-09-04 15:03:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 2421 transitions. [2020-09-04 15:03:44,980 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 2421 transitions. Word has length 221 [2020-09-04 15:03:44,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:03:44,980 INFO L479 AbstractCegarLoop]: Abstraction has 2135 states and 2421 transitions. [2020-09-04 15:03:44,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-04 15:03:44,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 2421 transitions. [2020-09-04 15:03:44,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-04 15:03:44,986 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:03:44,988 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:44,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:03:44,988 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:03:44,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:03:44,989 INFO L82 PathProgramCache]: Analyzing trace with hash -643898563, now seen corresponding path program 1 times [2020-09-04 15:03:44,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:03:44,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575290511] [2020-09-04 15:03:44,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:03:45,029 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:03:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:03:45,111 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:03:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:03:45,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:03:45,483 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:03:45,483 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:03:45,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:03:45,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:03:45 BoogieIcfgContainer [2020-09-04 15:03:45,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:03:45,519 INFO L168 Benchmark]: Toolchain (without parser) took 68420.30 ms. Allocated memory was 145.8 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 101.0 MB in the beginning and 567.7 MB in the end (delta: -466.7 MB). Peak memory consumption was 665.8 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:45,520 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 15:03:45,521 INFO L168 Benchmark]: CACSL2BoogieTranslator took 740.43 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.8 MB in the beginning and 171.3 MB in the end (delta: -70.5 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:45,522 INFO L168 Benchmark]: Boogie Preprocessor took 94.01 ms. Allocated memory is still 203.4 MB. Free memory was 171.3 MB in the beginning and 167.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:45,522 INFO L168 Benchmark]: RCFGBuilder took 1340.88 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 167.2 MB in the beginning and 178.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:45,523 INFO L168 Benchmark]: TraceAbstraction took 66239.50 ms. Allocated memory was 236.5 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 176.8 MB in the beginning and 567.7 MB in the end (delta: -390.9 MB). Peak memory consumption was 650.9 MB. Max. memory is 7.1 GB. [2020-09-04 15:03:45,526 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 145.8 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 740.43 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 100.8 MB in the beginning and 171.3 MB in the end (delta: -70.5 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 94.01 ms. Allocated memory is still 203.4 MB. Free memory was 171.3 MB in the beginning and 167.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1340.88 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 167.2 MB in the beginning and 178.2 MB in the end (delta: -11.0 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 66239.50 ms. Allocated memory was 236.5 MB in the beginning and 1.3 GB in the end (delta: 1.0 GB). Free memory was 176.8 MB in the beginning and 567.7 MB in the end (delta: -390.9 MB). Peak memory consumption was 650.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 44]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L218] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L498] int pumpRunning = 0; [L499] int systemActive = 1; [L693] int waterLevel = 1; [L694] int methaneLevelCritical = 0; [L851] int cleanupTimeShifts = 4; [L924] int retValue_acc ; [L925] int tmp ; [L929] FCALL select_helpers() [L930] FCALL select_features() [L931] CALL, EXPR valid_product() [L842] int retValue_acc ; [L845] retValue_acc = 1 [L846] return (retValue_acc); [L931] RET, EXPR valid_product() [L931] tmp = valid_product() [L933] COND TRUE \read(tmp) [L935] FCALL setup() [L936] CALL runTest() [L918] CALL test() [L422] int splverifierCounter ; [L423] int tmp ; [L424] int tmp___0 ; [L425] int tmp___1 ; [L426] int tmp___2 ; [L429] splverifierCounter = 0 [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND TRUE \read(tmp) [L443] CALL waterRise() [L711] COND TRUE waterLevel < 2 [L712] waterLevel = waterLevel + 1 [L443] RET waterRise() [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND FALSE !(\read(tmp___0)) [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND TRUE \read(tmp___2) [L463] CALL startSystem() [L687] systemActive = 1 [L463] RET startSystem() [L478] CALL timeShift() [L506] COND FALSE !(\read(pumpRunning)) [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND TRUE ! pumpRunning [L540] CALL, EXPR isHighWaterLevel() [L650] int retValue_acc ; [L651] int tmp ; [L652] int tmp___0 ; [L656] CALL, EXPR isHighWaterSensorDry() [L773] int retValue_acc ; [L776] COND FALSE !(waterLevel < 2) [L780] retValue_acc = 0 [L781] return (retValue_acc); [L656] RET, EXPR isHighWaterSensorDry() [L656] tmp = isHighWaterSensorDry() [L658] COND FALSE !(\read(tmp)) [L661] tmp___0 = 1 [L663] retValue_acc = tmp___0 [L664] return (retValue_acc); [L540] RET, EXPR isHighWaterLevel() [L540] tmp = isHighWaterLevel() [L542] COND TRUE \read(tmp) [L544] CALL activatePump() [L569] int tmp ; [L573] CALL, EXPR isMethaneAlarm() [L594] int retValue_acc ; [L598] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L598] RET, EXPR isMethaneLevelCritical() [L598] retValue_acc = isMethaneLevelCritical() [L600] return (retValue_acc); [L573] RET, EXPR isMethaneAlarm() [L573] tmp = isMethaneAlarm() [L575] COND FALSE !(\read(tmp)) [L579] CALL activatePump__wrappee__highWaterSensor() [L563] pumpRunning = 1 [L579] RET activatePump__wrappee__highWaterSensor() [L544] RET activatePump() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND FALSE !(\read(tmp)) [L521] RET __utac_acc__Specification1_spec__1() [L478] RET timeShift() [L431] COND TRUE 1 [L433] COND TRUE splverifierCounter < 4 [L439] tmp = __VERIFIER_nondet_int() [L441] COND FALSE !(\read(tmp)) [L449] tmp___0 = __VERIFIER_nondet_int() [L451] COND TRUE \read(tmp___0) [L453] CALL changeMethaneLevel() [L723] COND FALSE !(\read(methaneLevelCritical)) [L726] methaneLevelCritical = 1 [L453] RET changeMethaneLevel() [L459] tmp___2 = __VERIFIER_nondet_int() [L461] COND TRUE \read(tmp___2) [L463] CALL startSystem() [L687] systemActive = 1 [L463] RET startSystem() [L478] CALL timeShift() [L506] COND TRUE \read(pumpRunning) [L508] CALL lowerWaterLevel() [L699] COND TRUE waterLevel > 0 [L700] waterLevel = waterLevel - 1 [L508] RET lowerWaterLevel() [L513] COND TRUE \read(systemActive) [L515] CALL processEnvironment() [L535] int tmp ; [L538] COND FALSE !(! pumpRunning) [L553] FCALL processEnvironment__wrappee__base() [L515] RET processEnvironment() [L521] CALL __utac_acc__Specification1_spec__1() [L788] int tmp ; [L789] int tmp___0 ; [L793] CALL, EXPR isMethaneLevelCritical() [L732] int retValue_acc ; [L735] retValue_acc = methaneLevelCritical [L736] return (retValue_acc); [L793] RET, EXPR isMethaneLevelCritical() [L793] tmp = isMethaneLevelCritical() [L795] COND TRUE \read(tmp) [L797] CALL, EXPR isPumpRunning() [L605] int retValue_acc ; [L608] retValue_acc = pumpRunning [L609] return (retValue_acc); [L797] RET, EXPR isPumpRunning() [L797] tmp___0 = isPumpRunning() [L799] COND TRUE \read(tmp___0) [L801] CALL __automaton_fail() [L44] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 625 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 66.1s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 55.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2331 SDtfs, 6221 SDslu, 6152 SDs, 0 SdLazy, 13527 SolverSat, 2222 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 24.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 461 GetRequests, 266 SyntacticMatches, 3 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1549 ImplicationChecksByTransitivity, 24.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2215occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 3534 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...