/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_spec2_product43.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 15:12:11,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 15:12:11,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 15:12:11,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 15:12:11,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 15:12:11,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 15:12:11,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 15:12:11,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 15:12:11,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 15:12:11,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 15:12:11,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 15:12:11,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 15:12:11,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 15:12:11,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 15:12:11,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 15:12:11,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 15:12:11,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 15:12:11,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 15:12:11,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 15:12:11,407 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 15:12:11,409 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 15:12:11,410 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 15:12:11,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 15:12:11,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 15:12:11,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 15:12:11,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 15:12:11,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 15:12:11,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 15:12:11,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 15:12:11,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 15:12:11,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 15:12:11,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 15:12:11,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 15:12:11,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 15:12:11,423 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 15:12:11,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 15:12:11,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 15:12:11,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 15:12:11,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 15:12:11,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 15:12:11,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 15:12:11,427 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 15:12:11,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 15:12:11,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 15:12:11,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 15:12:11,442 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 15:12:11,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 15:12:11,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 15:12:11,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 15:12:11,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 15:12:11,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 15:12:11,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 15:12:11,443 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 15:12:11,443 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 15:12:11,444 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 15:12:11,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 15:12:11,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 15:12:11,444 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 15:12:11,445 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 15:12:11,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 15:12:11,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 15:12:11,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 15:12:11,445 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 15:12:11,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 15:12:11,446 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 15:12:11,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 15:12:11,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 15:12:11,904 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 15:12:11,906 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 15:12:11,906 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 15:12:11,907 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2020-09-04 15:12:12,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf1327f1a/b0e3f8acc95345ddb0f0fa917adf8570/FLAG47ac61253 [2020-09-04 15:12:12,616 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 15:12:12,617 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product43.cil.c [2020-09-04 15:12:12,633 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf1327f1a/b0e3f8acc95345ddb0f0fa917adf8570/FLAG47ac61253 [2020-09-04 15:12:12,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bf1327f1a/b0e3f8acc95345ddb0f0fa917adf8570 [2020-09-04 15:12:12,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 15:12:12,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 15:12:12,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 15:12:12,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 15:12:12,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 15:12:12,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:12:12" (1/1) ... [2020-09-04 15:12:12,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fec7e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:12, skipping insertion in model container [2020-09-04 15:12:12,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 03:12:12" (1/1) ... [2020-09-04 15:12:12,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 15:12:13,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 15:12:13,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:12:13,487 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 15:12:13,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 15:12:13,623 INFO L208 MainTranslator]: Completed translation [2020-09-04 15:12:13,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:13 WrapperNode [2020-09-04 15:12:13,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 15:12:13,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 15:12:13,625 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 15:12:13,625 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 15:12:13,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:13" (1/1) ... [2020-09-04 15:12:13,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:13" (1/1) ... [2020-09-04 15:12:13,663 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:13" (1/1) ... [2020-09-04 15:12:13,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:13" (1/1) ... [2020-09-04 15:12:13,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:13" (1/1) ... [2020-09-04 15:12:13,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:13" (1/1) ... [2020-09-04 15:12:13,729 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:13" (1/1) ... [2020-09-04 15:12:13,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 15:12:13,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 15:12:13,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 15:12:13,738 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 15:12:13,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:13" (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 15:12:13,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 15:12:13,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 15:12:13,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-04 15:12:13,842 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-04 15:12:13,842 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-04 15:12:13,842 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-04 15:12:13,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-04 15:12:13,843 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-04 15:12:13,843 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-04 15:12:13,843 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-04 15:12:13,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-04 15:12:13,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-04 15:12:13,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-04 15:12:13,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-04 15:12:13,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-04 15:12:13,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-04 15:12:13,845 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-04 15:12:13,846 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-04 15:12:13,847 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-04 15:12:13,847 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-04 15:12:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 15:12:13,848 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-04 15:12:13,850 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-04 15:12:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-04 15:12:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-04 15:12:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-09-04 15:12:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-09-04 15:12:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-04 15:12:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-04 15:12:13,851 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-09-04 15:12:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-04 15:12:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:12:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-04 15:12:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-04 15:12:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-04 15:12:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-04 15:12:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-04 15:12:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-04 15:12:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-04 15:12:13,853 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-04 15:12:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 15:12:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 15:12:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 15:12:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-04 15:12:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-04 15:12:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-04 15:12:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-04 15:12:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-04 15:12:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-04 15:12:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-04 15:12:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 15:12:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-04 15:12:13,855 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 15:12:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 15:12:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-04 15:12:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 15:12:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 15:12:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 15:12:13,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 15:12:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-04 15:12:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 15:12:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-04 15:12:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-04 15:12:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 15:12:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-04 15:12:13,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-04 15:12:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-04 15:12:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-04 15:12:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-04 15:12:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-04 15:12:13,858 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-04 15:12:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-04 15:12:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-09-04 15:12:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-04 15:12:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-04 15:12:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-04 15:12:13,859 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-04 15:12:13,860 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-04 15:12:13,860 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 15:12:13,860 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-04 15:12:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-04 15:12:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-04 15:12:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-09-04 15:12:13,861 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-04 15:12:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-04 15:12:13,862 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-04 15:12:13,863 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-04 15:12:13,863 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-09-04 15:12:13,863 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-04 15:12:13,864 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-09-04 15:12:13,864 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-04 15:12:13,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 15:12:13,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-04 15:12:13,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 15:12:15,005 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 15:12:15,005 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 15:12:15,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:12:15 BoogieIcfgContainer [2020-09-04 15:12:15,012 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 15:12:15,014 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 15:12:15,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 15:12:15,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 15:12:15,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 03:12:12" (1/3) ... [2020-09-04 15:12:15,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6314f510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:12:15, skipping insertion in model container [2020-09-04 15:12:15,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 03:12:13" (2/3) ... [2020-09-04 15:12:15,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6314f510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 03:12:15, skipping insertion in model container [2020-09-04 15:12:15,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 03:12:15" (3/3) ... [2020-09-04 15:12:15,021 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product43.cil.c [2020-09-04 15:12:15,033 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 15:12:15,045 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 15:12:15,065 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 15:12:15,088 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 15:12:15,088 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 15:12:15,088 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 15:12:15,088 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 15:12:15,088 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 15:12:15,089 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 15:12:15,089 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 15:12:15,089 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 15:12:15,113 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states. [2020-09-04 15:12:15,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-09-04 15:12:15,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:15,138 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] [2020-09-04 15:12:15,139 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:15,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:15,147 INFO L82 PathProgramCache]: Analyzing trace with hash 712153127, now seen corresponding path program 1 times [2020-09-04 15:12:15,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:15,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562421516] [2020-09-04 15:12:15,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:15,235 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:15,998 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:16,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:16,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:16,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:16,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:16,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:16,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:16,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:16,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:16,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:12:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:16,237 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 15:12:16,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562421516] [2020-09-04 15:12:16,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:16,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 15:12:16,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410896431] [2020-09-04 15:12:16,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 15:12:16,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:16,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 15:12:16,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:12:16,283 INFO L87 Difference]: Start difference. First operand 313 states. Second operand 4 states. [2020-09-04 15:12:17,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:17,639 INFO L93 Difference]: Finished difference Result 489 states and 577 transitions. [2020-09-04 15:12:17,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 15:12:17,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-09-04 15:12:17,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:17,663 INFO L225 Difference]: With dead ends: 489 [2020-09-04 15:12:17,663 INFO L226 Difference]: Without dead ends: 312 [2020-09-04 15:12:17,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-04 15:12:17,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-09-04 15:12:17,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 262. [2020-09-04 15:12:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-09-04 15:12:17,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 284 transitions. [2020-09-04 15:12:17,817 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 284 transitions. Word has length 148 [2020-09-04 15:12:17,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:17,818 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 284 transitions. [2020-09-04 15:12:17,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 15:12:17,818 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 284 transitions. [2020-09-04 15:12:17,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-04 15:12:17,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:17,823 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] [2020-09-04 15:12:17,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 15:12:17,824 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:17,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:17,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1114292978, now seen corresponding path program 1 times [2020-09-04 15:12:17,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:17,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841281117] [2020-09-04 15:12:17,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:17,828 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,249 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:18,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:18,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:18,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:18,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 15:12:18,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 15:12:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:18,403 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 15:12:18,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841281117] [2020-09-04 15:12:18,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:18,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 15:12:18,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824701535] [2020-09-04 15:12:18,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 15:12:18,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:18,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 15:12:18,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 15:12:18,409 INFO L87 Difference]: Start difference. First operand 262 states and 284 transitions. Second operand 5 states. [2020-09-04 15:12:19,138 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:20,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:20,182 INFO L93 Difference]: Finished difference Result 409 states and 462 transitions. [2020-09-04 15:12:20,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 15:12:20,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-09-04 15:12:20,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:20,188 INFO L225 Difference]: With dead ends: 409 [2020-09-04 15:12:20,188 INFO L226 Difference]: Without dead ends: 301 [2020-09-04 15:12:20,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:12:20,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2020-09-04 15:12:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 252. [2020-09-04 15:12:20,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-09-04 15:12:20,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 271 transitions. [2020-09-04 15:12:20,293 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 271 transitions. Word has length 149 [2020-09-04 15:12:20,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:20,294 INFO L479 AbstractCegarLoop]: Abstraction has 252 states and 271 transitions. [2020-09-04 15:12:20,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 15:12:20,294 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 271 transitions. [2020-09-04 15:12:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-04 15:12:20,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:20,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:20,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 15:12:20,298 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:20,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:20,298 INFO L82 PathProgramCache]: Analyzing trace with hash 185312608, now seen corresponding path program 1 times [2020-09-04 15:12:20,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:20,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2006354722] [2020-09-04 15:12:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:20,301 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:20,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,741 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:20,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:20,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:20,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 15:12:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 15:12:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:20,928 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 15:12:20,929 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2006354722] [2020-09-04 15:12:20,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:20,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:12:20,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507447475] [2020-09-04 15:12:20,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:12:20,931 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:20,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:12:20,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:12:20,931 INFO L87 Difference]: Start difference. First operand 252 states and 271 transitions. Second operand 10 states. [2020-09-04 15:12:21,435 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:21,780 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:22,077 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:12:22,385 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:22,741 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:23,050 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:24,132 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:26,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:26,226 INFO L93 Difference]: Finished difference Result 671 states and 774 transitions. [2020-09-04 15:12:26,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:12:26,227 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2020-09-04 15:12:26,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:26,233 INFO L225 Difference]: With dead ends: 671 [2020-09-04 15:12:26,233 INFO L226 Difference]: Without dead ends: 534 [2020-09-04 15:12:26,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-09-04 15:12:26,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2020-09-04 15:12:26,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 445. [2020-09-04 15:12:26,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-09-04 15:12:26,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 494 transitions. [2020-09-04 15:12:26,411 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 494 transitions. Word has length 158 [2020-09-04 15:12:26,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:26,411 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 494 transitions. [2020-09-04 15:12:26,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:12:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 494 transitions. [2020-09-04 15:12:26,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-04 15:12:26,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:26,415 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 15:12:26,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 15:12:26,415 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:26,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:26,416 INFO L82 PathProgramCache]: Analyzing trace with hash 226204253, now seen corresponding path program 1 times [2020-09-04 15:12:26,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:26,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730420167] [2020-09-04 15:12:26,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:26,419 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:26,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,759 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:26,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:26,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 15:12:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-09-04 15:12:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-04 15:12:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:26,924 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 15:12:26,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730420167] [2020-09-04 15:12:26,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:26,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 15:12:26,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327429236] [2020-09-04 15:12:26,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 15:12:26,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:26,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 15:12:26,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 15:12:26,928 INFO L87 Difference]: Start difference. First operand 445 states and 494 transitions. Second operand 7 states. [2020-09-04 15:12:27,640 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:29,817 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:30,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:30,487 INFO L93 Difference]: Finished difference Result 1113 states and 1318 transitions. [2020-09-04 15:12:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 15:12:30,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-09-04 15:12:30,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:30,496 INFO L225 Difference]: With dead ends: 1113 [2020-09-04 15:12:30,496 INFO L226 Difference]: Without dead ends: 783 [2020-09-04 15:12:30,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-09-04 15:12:30,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-09-04 15:12:30,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 655. [2020-09-04 15:12:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 655 states. [2020-09-04 15:12:30,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 728 transitions. [2020-09-04 15:12:30,715 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 728 transitions. Word has length 166 [2020-09-04 15:12:30,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:30,716 INFO L479 AbstractCegarLoop]: Abstraction has 655 states and 728 transitions. [2020-09-04 15:12:30,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 15:12:30,716 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 728 transitions. [2020-09-04 15:12:30,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-04 15:12:30,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:30,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:30,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 15:12:30,719 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:30,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:30,719 INFO L82 PathProgramCache]: Analyzing trace with hash 216605652, now seen corresponding path program 1 times [2020-09-04 15:12:30,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:30,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409207930] [2020-09-04 15:12:30,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:30,722 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:31,144 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:31,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:31,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:31,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:31,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:31,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:31,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:31,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:31,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 15:12:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:31,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 15:12:31,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-09-04 15:12:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:31,397 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 15:12:31,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409207930] [2020-09-04 15:12:31,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:31,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 15:12:31,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522447264] [2020-09-04 15:12:31,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 15:12:31,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:31,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 15:12:31,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-04 15:12:31,400 INFO L87 Difference]: Start difference. First operand 655 states and 728 transitions. Second operand 10 states. [2020-09-04 15:12:31,955 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:33,178 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:33,496 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:33,835 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:34,164 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:34,470 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:34,758 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:35,048 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:35,510 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:37,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:37,417 INFO L93 Difference]: Finished difference Result 1778 states and 2087 transitions. [2020-09-04 15:12:37,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 15:12:37,418 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 167 [2020-09-04 15:12:37,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:37,425 INFO L225 Difference]: With dead ends: 1778 [2020-09-04 15:12:37,426 INFO L226 Difference]: Without dead ends: 1238 [2020-09-04 15:12:37,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=159, Invalid=441, Unknown=0, NotChecked=0, Total=600 [2020-09-04 15:12:37,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2020-09-04 15:12:37,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1091. [2020-09-04 15:12:37,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2020-09-04 15:12:37,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1217 transitions. [2020-09-04 15:12:37,734 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1217 transitions. Word has length 167 [2020-09-04 15:12:37,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:37,735 INFO L479 AbstractCegarLoop]: Abstraction has 1091 states and 1217 transitions. [2020-09-04 15:12:37,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 15:12:37,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1217 transitions. [2020-09-04 15:12:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-04 15:12:37,738 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:37,738 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 15:12:37,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 15:12:37,739 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:37,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:37,739 INFO L82 PathProgramCache]: Analyzing trace with hash 611019346, now seen corresponding path program 1 times [2020-09-04 15:12:37,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:37,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760490136] [2020-09-04 15:12:37,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:37,742 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:38,122 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:38,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:38,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:38,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:38,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:38,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:38,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:38,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:38,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-09-04 15:12:38,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:38,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 15:12:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:38,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 15:12:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:38,332 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 15:12:38,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760490136] [2020-09-04 15:12:38,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:38,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:12:38,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91112545] [2020-09-04 15:12:38,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:12:38,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:38,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:12:38,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:12:38,337 INFO L87 Difference]: Start difference. First operand 1091 states and 1217 transitions. Second operand 11 states. [2020-09-04 15:12:38,892 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:40,359 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:40,678 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:41,043 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:41,402 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:12:41,691 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:42,537 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:42,824 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:43,193 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:44,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:44,390 INFO L93 Difference]: Finished difference Result 2337 states and 2719 transitions. [2020-09-04 15:12:44,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-04 15:12:44,391 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 172 [2020-09-04 15:12:44,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:44,399 INFO L225 Difference]: With dead ends: 2337 [2020-09-04 15:12:44,400 INFO L226 Difference]: Without dead ends: 1361 [2020-09-04 15:12:44,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=283, Invalid=773, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 15:12:44,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2020-09-04 15:12:44,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1085. [2020-09-04 15:12:44,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1085 states. [2020-09-04 15:12:44,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1205 transitions. [2020-09-04 15:12:44,706 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1205 transitions. Word has length 172 [2020-09-04 15:12:44,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:44,707 INFO L479 AbstractCegarLoop]: Abstraction has 1085 states and 1205 transitions. [2020-09-04 15:12:44,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:12:44,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1205 transitions. [2020-09-04 15:12:44,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-04 15:12:44,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:44,720 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] [2020-09-04 15:12:44,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 15:12:44,720 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:44,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:44,721 INFO L82 PathProgramCache]: Analyzing trace with hash -472762249, now seen corresponding path program 1 times [2020-09-04 15:12:44,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:44,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591116159] [2020-09-04 15:12:44,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:44,724 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:44,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,076 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:45,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:45,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:45,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 15:12:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:45,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:12:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-04 15:12:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 15:12:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:45,368 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 15:12:45,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1591116159] [2020-09-04 15:12:45,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:45,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 15:12:45,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321293482] [2020-09-04 15:12:45,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 15:12:45,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:45,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 15:12:45,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-09-04 15:12:45,371 INFO L87 Difference]: Start difference. First operand 1085 states and 1205 transitions. Second operand 11 states. [2020-09-04 15:12:46,815 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:47,132 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:12:47,459 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-09-04 15:12:47,777 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:48,126 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:48,430 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:49,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:49,987 INFO L93 Difference]: Finished difference Result 2483 states and 2970 transitions. [2020-09-04 15:12:49,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 15:12:49,987 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 218 [2020-09-04 15:12:49,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:49,996 INFO L225 Difference]: With dead ends: 2483 [2020-09-04 15:12:49,996 INFO L226 Difference]: Without dead ends: 1513 [2020-09-04 15:12:50,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:12:50,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2020-09-04 15:12:50,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1117. [2020-09-04 15:12:50,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1117 states. [2020-09-04 15:12:50,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1237 transitions. [2020-09-04 15:12:50,369 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1237 transitions. Word has length 218 [2020-09-04 15:12:50,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:50,369 INFO L479 AbstractCegarLoop]: Abstraction has 1117 states and 1237 transitions. [2020-09-04 15:12:50,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 15:12:50,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1237 transitions. [2020-09-04 15:12:50,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-04 15:12:50,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:50,375 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] [2020-09-04 15:12:50,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 15:12:50,375 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:50,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:50,376 INFO L82 PathProgramCache]: Analyzing trace with hash 967037143, now seen corresponding path program 1 times [2020-09-04 15:12:50,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:50,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1242294240] [2020-09-04 15:12:50,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:50,379 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,723 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:50,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 15:12:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:50,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:50,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:12:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-04 15:12:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 15:12:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:50,977 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 15:12:50,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1242294240] [2020-09-04 15:12:50,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:50,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 15:12:50,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388134069] [2020-09-04 15:12:50,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 15:12:50,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:50,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 15:12:50,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-04 15:12:50,980 INFO L87 Difference]: Start difference. First operand 1117 states and 1237 transitions. Second operand 14 states. [2020-09-04 15:12:51,634 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-09-04 15:12:51,955 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:12:52,271 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:52,590 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:52,885 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:53,957 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:54,286 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:54,606 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:54,960 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:12:55,271 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-04 15:12:57,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:12:57,191 INFO L93 Difference]: Finished difference Result 2551 states and 3042 transitions. [2020-09-04 15:12:57,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 15:12:57,191 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 218 [2020-09-04 15:12:57,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:12:57,199 INFO L225 Difference]: With dead ends: 2551 [2020-09-04 15:12:57,199 INFO L226 Difference]: Without dead ends: 1549 [2020-09-04 15:12:57,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2020-09-04 15:12:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2020-09-04 15:12:57,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 1141. [2020-09-04 15:12:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1141 states. [2020-09-04 15:12:57,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1261 transitions. [2020-09-04 15:12:57,691 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1261 transitions. Word has length 218 [2020-09-04 15:12:57,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:12:57,692 INFO L479 AbstractCegarLoop]: Abstraction has 1141 states and 1261 transitions. [2020-09-04 15:12:57,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 15:12:57,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1261 transitions. [2020-09-04 15:12:57,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-04 15:12:57,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:12:57,695 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] [2020-09-04 15:12:57,696 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 15:12:57,696 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:12:57,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:12:57,697 INFO L82 PathProgramCache]: Analyzing trace with hash 346565396, now seen corresponding path program 1 times [2020-09-04 15:12:57,697 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:12:57,697 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571961584] [2020-09-04 15:12:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:12:57,699 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:12:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,081 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:12:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:12:58,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:12:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:12:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:12:58,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:12:58,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:12:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 15:12:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 15:12:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:12:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:12:58,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:12:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:12:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:12:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-04 15:12:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 15:12:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:12:58,330 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 15:12:58,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571961584] [2020-09-04 15:12:58,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:12:58,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 15:12:58,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514459] [2020-09-04 15:12:58,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 15:12:58,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:12:58,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 15:12:58,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 15:12:58,334 INFO L87 Difference]: Start difference. First operand 1141 states and 1261 transitions. Second operand 8 states. [2020-09-04 15:12:58,911 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:12:59,635 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:13:03,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:13:03,087 INFO L93 Difference]: Finished difference Result 3759 states and 4568 transitions. [2020-09-04 15:13:03,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 15:13:03,088 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 218 [2020-09-04 15:13:03,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:13:03,103 INFO L225 Difference]: With dead ends: 3759 [2020-09-04 15:13:03,103 INFO L226 Difference]: Without dead ends: 2733 [2020-09-04 15:13:03,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-09-04 15:13:03,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2733 states. [2020-09-04 15:13:03,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2733 to 2183. [2020-09-04 15:13:03,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2183 states. [2020-09-04 15:13:03,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2183 states to 2183 states and 2467 transitions. [2020-09-04 15:13:03,985 INFO L78 Accepts]: Start accepts. Automaton has 2183 states and 2467 transitions. Word has length 218 [2020-09-04 15:13:03,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:13:03,986 INFO L479 AbstractCegarLoop]: Abstraction has 2183 states and 2467 transitions. [2020-09-04 15:13:03,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 15:13:03,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2183 states and 2467 transitions. [2020-09-04 15:13:03,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-09-04 15:13:03,990 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:13:03,991 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, 1, 1] [2020-09-04 15:13:03,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 15:13:03,991 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:13:03,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:13:03,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1445646548, now seen corresponding path program 1 times [2020-09-04 15:13:03,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:13:03,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495603996] [2020-09-04 15:13:03,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:13:03,995 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:13:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,360 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:13:04,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:13:04,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:13:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:13:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:13:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:13:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:13:04,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:13:04,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-09-04 15:13:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 15:13:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:04,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:13:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:13:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:13:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:13:04,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:13:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-04 15:13:04,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-04 15:13:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:04,879 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 15:13:04,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495603996] [2020-09-04 15:13:04,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:13:04,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-09-04 15:13:04,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001061667] [2020-09-04 15:13:04,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-04 15:13:04,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:13:04,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-04 15:13:04,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2020-09-04 15:13:04,882 INFO L87 Difference]: Start difference. First operand 2183 states and 2467 transitions. Second operand 21 states. [2020-09-04 15:13:05,541 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:13:05,997 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-04 15:13:06,341 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-04 15:13:06,678 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:07,011 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-09-04 15:13:07,335 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:08,494 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:13:09,453 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:09,866 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:13:10,395 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:10,791 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:13:12,591 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:13,125 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:13:13,485 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:13,890 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:13:14,281 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:14,766 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:13:15,109 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-04 15:13:15,492 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-09-04 15:13:16,196 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-04 15:13:16,911 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 193 [2020-09-04 15:13:17,538 WARN L193 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-09-04 15:13:20,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:13:20,001 INFO L93 Difference]: Finished difference Result 4708 states and 5522 transitions. [2020-09-04 15:13:20,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-09-04 15:13:20,004 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 223 [2020-09-04 15:13:20,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:13:20,018 INFO L225 Difference]: With dead ends: 4708 [2020-09-04 15:13:20,019 INFO L226 Difference]: Without dead ends: 2640 [2020-09-04 15:13:20,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=793, Invalid=3367, Unknown=0, NotChecked=0, Total=4160 [2020-09-04 15:13:20,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2020-09-04 15:13:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2109. [2020-09-04 15:13:20,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2109 states. [2020-09-04 15:13:20,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2109 states to 2109 states and 2353 transitions. [2020-09-04 15:13:20,746 INFO L78 Accepts]: Start accepts. Automaton has 2109 states and 2353 transitions. Word has length 223 [2020-09-04 15:13:20,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:13:20,747 INFO L479 AbstractCegarLoop]: Abstraction has 2109 states and 2353 transitions. [2020-09-04 15:13:20,747 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-04 15:13:20,747 INFO L276 IsEmpty]: Start isEmpty. Operand 2109 states and 2353 transitions. [2020-09-04 15:13:20,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-09-04 15:13:20,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:13:20,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:13:20,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 15:13:20,752 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:13:20,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:13:20,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1177290011, now seen corresponding path program 1 times [2020-09-04 15:13:20,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:13:20,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758948657] [2020-09-04 15:13:20,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:13:20,795 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:13:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,181 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:13:21,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:13:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:13:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:13:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:13:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:13:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:13:21,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:13:21,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:13:21,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:21,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:13:21,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:13:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:13:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:13:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:13:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 15:13:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-09-04 15:13:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-09-04 15:13:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-09-04 15:13:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-09-04 15:13:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-09-04 15:13:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:21,418 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 15:13:21,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758948657] [2020-09-04 15:13:21,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:13:21,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 15:13:21,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853273027] [2020-09-04 15:13:21,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 15:13:21,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:13:21,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 15:13:21,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-04 15:13:21,422 INFO L87 Difference]: Start difference. First operand 2109 states and 2353 transitions. Second operand 9 states. [2020-09-04 15:13:22,010 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:13:25,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:13:25,656 INFO L93 Difference]: Finished difference Result 4101 states and 4883 transitions. [2020-09-04 15:13:25,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 15:13:25,657 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 271 [2020-09-04 15:13:25,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:13:25,680 INFO L225 Difference]: With dead ends: 4101 [2020-09-04 15:13:25,680 INFO L226 Difference]: Without dead ends: 4098 [2020-09-04 15:13:25,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=198, Invalid=504, Unknown=0, NotChecked=0, Total=702 [2020-09-04 15:13:25,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4098 states. [2020-09-04 15:13:27,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4098 to 3201. [2020-09-04 15:13:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3201 states. [2020-09-04 15:13:27,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 3579 transitions. [2020-09-04 15:13:27,076 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 3579 transitions. Word has length 271 [2020-09-04 15:13:27,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:13:27,077 INFO L479 AbstractCegarLoop]: Abstraction has 3201 states and 3579 transitions. [2020-09-04 15:13:27,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 15:13:27,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 3579 transitions. [2020-09-04 15:13:27,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-09-04 15:13:27,087 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:13:27,087 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-04 15:13:27,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 15:13:27,088 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:13:27,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:13:27,088 INFO L82 PathProgramCache]: Analyzing trace with hash 855560626, now seen corresponding path program 1 times [2020-09-04 15:13:27,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:13:27,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019793778] [2020-09-04 15:13:27,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:13:27,105 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:13:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,499 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-04 15:13:27,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 15:13:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-04 15:13:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-04 15:13:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-04 15:13:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-04 15:13:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 15:13:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-04 15:13:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-09-04 15:13:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 15:13:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 15:13:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:13:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:13:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 15:13:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-04 15:13:27,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-09-04 15:13:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-09-04 15:13:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 15:13:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 15:13:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 15:13:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:27,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 15:13:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-09-04 15:13:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 15:13:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 15:13:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2020-09-04 15:13:27,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-09-04 15:13:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 15:13:27,805 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 15:13:27,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019793778] [2020-09-04 15:13:27,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 15:13:27,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 15:13:27,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853729479] [2020-09-04 15:13:27,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 15:13:27,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 15:13:27,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 15:13:27,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-04 15:13:27,808 INFO L87 Difference]: Start difference. First operand 3201 states and 3579 transitions. Second operand 12 states. [2020-09-04 15:13:28,430 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:13:29,204 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:13:33,684 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-04 15:13:35,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 15:13:35,914 INFO L93 Difference]: Finished difference Result 8906 states and 10528 transitions. [2020-09-04 15:13:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-04 15:13:35,918 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 329 [2020-09-04 15:13:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 15:13:35,951 INFO L225 Difference]: With dead ends: 8906 [2020-09-04 15:13:35,952 INFO L226 Difference]: Without dead ends: 6285 [2020-09-04 15:13:35,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 77 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=452, Invalid=1440, Unknown=0, NotChecked=0, Total=1892 [2020-09-04 15:13:35,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6285 states. [2020-09-04 15:13:37,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6285 to 4725. [2020-09-04 15:13:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4725 states. [2020-09-04 15:13:37,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4725 states to 4725 states and 5285 transitions. [2020-09-04 15:13:37,547 INFO L78 Accepts]: Start accepts. Automaton has 4725 states and 5285 transitions. Word has length 329 [2020-09-04 15:13:37,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 15:13:37,547 INFO L479 AbstractCegarLoop]: Abstraction has 4725 states and 5285 transitions. [2020-09-04 15:13:37,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 15:13:37,547 INFO L276 IsEmpty]: Start isEmpty. Operand 4725 states and 5285 transitions. [2020-09-04 15:13:37,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-09-04 15:13:37,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 15:13:37,557 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-04 15:13:37,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 15:13:37,557 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 15:13:37,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 15:13:37,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1466953620, now seen corresponding path program 1 times [2020-09-04 15:13:37,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 15:13:37,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115178899] [2020-09-04 15:13:37,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 15:13:37,578 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 15:13:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:13:37,655 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:13:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 15:13:37,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 15:13:38,244 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 15:13:38,245 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 15:13:38,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 15:13:38,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 03:13:38 BoogieIcfgContainer [2020-09-04 15:13:38,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 15:13:38,281 INFO L168 Benchmark]: Toolchain (without parser) took 85356.00 ms. Allocated memory was 139.5 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 103.3 MB in the beginning and 185.8 MB in the end (delta: -82.6 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2020-09-04 15:13:38,282 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 15:13:38,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 693.56 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 103.1 MB in the beginning and 171.6 MB in the end (delta: -68.5 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-09-04 15:13:38,284 INFO L168 Benchmark]: Boogie Preprocessor took 112.60 ms. Allocated memory is still 203.9 MB. Free memory was 171.6 MB in the beginning and 167.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-09-04 15:13:38,284 INFO L168 Benchmark]: RCFGBuilder took 1274.41 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 166.9 MB in the beginning and 176.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. [2020-09-04 15:13:38,285 INFO L168 Benchmark]: TraceAbstraction took 83266.01 ms. Allocated memory was 237.5 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 175.0 MB in the beginning and 185.8 MB in the end (delta: -10.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2020-09-04 15:13:38,288 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 693.56 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 103.1 MB in the beginning and 171.6 MB in the end (delta: -68.5 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.60 ms. Allocated memory is still 203.9 MB. Free memory was 171.6 MB in the beginning and 167.6 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1274.41 ms. Allocated memory was 203.9 MB in the beginning and 237.5 MB in the end (delta: 33.6 MB). Free memory was 166.9 MB in the beginning and 176.5 MB in the end (delta: -9.6 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 83266.01 ms. Allocated memory was 237.5 MB in the beginning and 1.7 GB in the end (delta: 1.4 GB). Free memory was 175.0 MB in the beginning and 185.8 MB in the end (delta: -10.8 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 946]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L47] int waterLevel = 1; [L48] int methaneLevelCritical = 0; [L310] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L507] int cleanupTimeShifts = 4; [L648] int methAndRunningLastTime ; [L757] int pumpRunning = 0; [L758] int systemActive = 1; [L588] int retValue_acc ; [L589] int tmp ; [L593] FCALL select_helpers() [L594] FCALL select_features() [L595] CALL, EXPR valid_product() [L637] int retValue_acc ; [L640] retValue_acc = 1 [L641] return (retValue_acc); [L595] RET, EXPR valid_product() [L595] tmp = valid_product() [L597] COND TRUE \read(tmp) [L599] FCALL setup() [L600] CALL runTest() [L578] CALL __utac_acc__Specification2_spec__1() [L653] methAndRunningLastTime = 0 [L578] RET __utac_acc__Specification2_spec__1() [L579] CALL test() [L689] int splverifierCounter ; [L690] int tmp ; [L691] int tmp___0 ; [L692] int tmp___1 ; [L693] int tmp___2 ; [L696] splverifierCounter = 0 [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND TRUE \read(tmp) [L710] CALL waterRise() [L65] COND TRUE waterLevel < 2 [L66] waterLevel = waterLevel + 1 [L710] RET waterRise() [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp___0)) [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND FALSE !(\read(pumpRunning)) [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND TRUE ! pumpRunning [L798] CALL, EXPR isHighWaterLevel() [L908] int retValue_acc ; [L909] int tmp ; [L910] int tmp___0 ; [L914] CALL, EXPR isHighWaterSensorDry() [L127] int retValue_acc ; [L130] COND FALSE !(waterLevel < 2) [L134] retValue_acc = 0 [L135] return (retValue_acc); [L914] RET, EXPR isHighWaterSensorDry() [L914] tmp = isHighWaterSensorDry() [L916] COND FALSE !(\read(tmp)) [L919] tmp___0 = 1 [L921] retValue_acc = tmp___0 [L922] return (retValue_acc); [L798] RET, EXPR isHighWaterLevel() [L798] tmp = isHighWaterLevel() [L800] COND TRUE \read(tmp) [L802] CALL activatePump() [L827] int tmp ; [L831] CALL, EXPR isMethaneAlarm() [L852] int retValue_acc ; [L856] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] retValue_acc = isMethaneLevelCritical() [L858] return (retValue_acc); [L831] RET, EXPR isMethaneAlarm() [L831] tmp = isMethaneAlarm() [L833] COND FALSE !(\read(tmp)) [L837] CALL activatePump__wrappee__highWaterSensor() [L821] pumpRunning = 1 [L837] RET activatePump__wrappee__highWaterSensor() [L802] RET activatePump() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND FALSE !(\read(tmp)) [L681] methAndRunningLastTime = 0 [L779] RET __utac_acc__Specification2_spec__2() [L743] RET timeShift() [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND FALSE !(\read(tmp)) [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND TRUE \read(tmp___0) [L720] CALL changeMethaneLevel() [L77] COND FALSE !(\read(methaneLevelCritical)) [L80] methaneLevelCritical = 1 [L720] RET changeMethaneLevel() [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND TRUE \read(pumpRunning) [L766] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L766] RET lowerWaterLevel() [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND FALSE !(! pumpRunning) [L811] FCALL processEnvironment__wrappee__base() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND TRUE \read(tmp) [L667] CALL, EXPR isPumpRunning() [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); [L667] RET, EXPR isPumpRunning() [L667] tmp___0 = isPumpRunning() [L669] COND TRUE \read(tmp___0) [L670] COND FALSE !(\read(methAndRunningLastTime)) [L675] methAndRunningLastTime = 1 [L779] RET __utac_acc__Specification2_spec__2() [L743] RET timeShift() [L698] COND TRUE 1 [L700] COND TRUE splverifierCounter < 4 [L706] tmp = __VERIFIER_nondet_int() [L708] COND FALSE !(\read(tmp)) [L716] tmp___0 = __VERIFIER_nondet_int() [L718] COND FALSE !(\read(tmp___0)) [L726] tmp___2 = __VERIFIER_nondet_int() [L728] COND TRUE \read(tmp___2) [L743] CALL timeShift() [L764] COND TRUE \read(pumpRunning) [L766] CALL lowerWaterLevel() [L53] COND TRUE waterLevel > 0 [L54] waterLevel = waterLevel - 1 [L766] RET lowerWaterLevel() [L771] COND TRUE \read(systemActive) [L773] CALL processEnvironment() [L793] int tmp ; [L796] COND FALSE !(! pumpRunning) [L811] FCALL processEnvironment__wrappee__base() [L773] RET processEnvironment() [L779] CALL __utac_acc__Specification2_spec__2() [L658] int tmp ; [L659] int tmp___0 ; [L663] CALL, EXPR isMethaneLevelCritical() [L86] int retValue_acc ; [L89] retValue_acc = methaneLevelCritical [L90] return (retValue_acc); [L663] RET, EXPR isMethaneLevelCritical() [L663] tmp = isMethaneLevelCritical() [L665] COND TRUE \read(tmp) [L667] CALL, EXPR isPumpRunning() [L863] int retValue_acc ; [L866] retValue_acc = pumpRunning [L867] return (retValue_acc); [L667] RET, EXPR isPumpRunning() [L667] tmp___0 = isPumpRunning() [L669] COND TRUE \read(tmp___0) [L670] COND TRUE \read(methAndRunningLastTime) [L672] CALL __automaton_fail() [L946] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 40 procedures, 630 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 83.1s, OverallIterations: 13, TraceHistogramMax: 4, AutomataDifference: 67.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3137 SDtfs, 9807 SDslu, 6830 SDs, 0 SdLazy, 15228 SolverSat, 2919 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 723 GetRequests, 425 SyntacticMatches, 10 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2412 ImplicationChecksByTransitivity, 28.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4725occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.6s AutomataMinimizationTime, 12 MinimizatonAttempts, 5081 StatesRemovedByMinimization, 12 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...