/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_spec4_product14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 19:07:40,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 19:07:40,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 19:07:40,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 19:07:40,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 19:07:40,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 19:07:40,629 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 19:07:40,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 19:07:40,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 19:07:40,649 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 19:07:40,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 19:07:40,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 19:07:40,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 19:07:40,657 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 19:07:40,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 19:07:40,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 19:07:40,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 19:07:40,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 19:07:40,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 19:07:40,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 19:07:40,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 19:07:40,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 19:07:40,710 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 19:07:40,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 19:07:40,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 19:07:40,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 19:07:40,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 19:07:40,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 19:07:40,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 19:07:40,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 19:07:40,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 19:07:40,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 19:07:40,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 19:07:40,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 19:07:40,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 19:07:40,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 19:07:40,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 19:07:40,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 19:07:40,732 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 19:07:40,733 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 19:07:40,735 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 19:07:40,741 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 19:07:40,765 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 19:07:40,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 19:07:40,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 19:07:40,768 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 19:07:40,768 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 19:07:40,768 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 19:07:40,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 19:07:40,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 19:07:40,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 19:07:40,769 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 19:07:40,770 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 19:07:40,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 19:07:40,770 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 19:07:40,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 19:07:40,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 19:07:40,771 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 19:07:40,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 19:07:40,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 19:07:40,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 19:07:40,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 19:07:40,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 19:07:40,772 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 19:07:40,773 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 19:07:41,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 19:07:41,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 19:07:41,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 19:07:41,320 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 19:07:41,321 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 19:07:41,322 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product14.cil.c [2021-02-21 19:07:41,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736c42cdf/e9217eaae12a41c7bf322deeefeb7ed5/FLAG7786a3809 [2021-02-21 19:07:42,373 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 19:07:42,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product14.cil.c [2021-02-21 19:07:42,395 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736c42cdf/e9217eaae12a41c7bf322deeefeb7ed5/FLAG7786a3809 [2021-02-21 19:07:42,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/736c42cdf/e9217eaae12a41c7bf322deeefeb7ed5 [2021-02-21 19:07:42,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 19:07:42,662 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 19:07:42,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 19:07:42,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 19:07:42,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 19:07:42,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:07:42" (1/1) ... [2021-02-21 19:07:42,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cea9f25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:07:42, skipping insertion in model container [2021-02-21 19:07:42,673 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 07:07:42" (1/1) ... [2021-02-21 19:07:42,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 19:07:42,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 19:07:43,093 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product14.cil.c[15656,15669] [2021-02-21 19:07:43,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:07:43,156 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 19:07:43,242 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product14.cil.c[15656,15669] [2021-02-21 19:07:43,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 19:07:43,311 INFO L208 MainTranslator]: Completed translation [2021-02-21 19:07:43,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:07:43 WrapperNode [2021-02-21 19:07:43,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 19:07:43,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 19:07:43,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 19:07:43,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 19:07:43,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:07:43" (1/1) ... [2021-02-21 19:07:43,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:07:43" (1/1) ... [2021-02-21 19:07:43,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:07:43" (1/1) ... [2021-02-21 19:07:43,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:07:43" (1/1) ... [2021-02-21 19:07:43,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:07:43" (1/1) ... [2021-02-21 19:07:43,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:07:43" (1/1) ... [2021-02-21 19:07:43,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:07:43" (1/1) ... [2021-02-21 19:07:43,461 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 19:07:43,462 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 19:07:43,463 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 19:07:43,463 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 19:07:43,464 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:07:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-21 19:07:43,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 19:07:43,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 19:07:43,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-21 19:07:43,615 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 19:07:43,615 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-21 19:07:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-21 19:07:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-21 19:07:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-21 19:07:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-21 19:07:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-21 19:07:43,616 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-21 19:07:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-21 19:07:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-21 19:07:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-21 19:07:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-21 19:07:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-21 19:07:43,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-21 19:07:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-21 19:07:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-21 19:07:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-21 19:07:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-21 19:07:43,618 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-21 19:07:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:07:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-21 19:07:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-21 19:07:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-21 19:07:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-21 19:07:43,619 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-21 19:07:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-21 19:07:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-21 19:07:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-21 19:07:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-21 19:07:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-21 19:07:43,620 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-21 19:07:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-21 19:07:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-21 19:07:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 19:07:43,621 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:07:43,621 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 19:07:43,621 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 19:07:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 19:07:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 19:07:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 19:07:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-21 19:07:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-21 19:07:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-21 19:07:43,622 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-21 19:07:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-21 19:07:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-21 19:07:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-21 19:07:43,623 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-21 19:07:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-21 19:07:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-21 19:07:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-21 19:07:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 19:07:43,624 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 19:07:43,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-21 19:07:43,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 19:07:43,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 19:07:43,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 19:07:43,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 19:07:43,625 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-21 19:07:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 19:07:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-21 19:07:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-21 19:07:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 19:07:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-21 19:07:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-21 19:07:43,626 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-21 19:07:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-21 19:07:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-21 19:07:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-21 19:07:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-21 19:07:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-21 19:07:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-21 19:07:43,627 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-21 19:07:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-21 19:07:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-21 19:07:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-21 19:07:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-21 19:07:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-21 19:07:43,628 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-21 19:07:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-21 19:07:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-21 19:07:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-21 19:07:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-21 19:07:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 19:07:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 19:07:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 19:07:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 19:07:45,187 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 19:07:45,188 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 19:07:45,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:07:45 BoogieIcfgContainer [2021-02-21 19:07:45,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 19:07:45,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 19:07:45,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 19:07:45,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 19:07:45,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 07:07:42" (1/3) ... [2021-02-21 19:07:45,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b6d1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:07:45, skipping insertion in model container [2021-02-21 19:07:45,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 07:07:43" (2/3) ... [2021-02-21 19:07:45,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b6d1d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 07:07:45, skipping insertion in model container [2021-02-21 19:07:45,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 07:07:45" (3/3) ... [2021-02-21 19:07:45,202 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product14.cil.c [2021-02-21 19:07:45,211 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 19:07:45,217 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 19:07:45,238 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 19:07:45,268 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 19:07:45,268 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 19:07:45,269 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 19:07:45,269 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 19:07:45,269 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 19:07:45,269 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 19:07:45,269 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 19:07:45,270 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 19:07:45,296 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states. [2021-02-21 19:07:45,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-21 19:07:45,319 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:07:45,321 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] [2021-02-21 19:07:45,321 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:07:45,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:07:45,350 INFO L82 PathProgramCache]: Analyzing trace with hash 2130098116, now seen corresponding path program 1 times [2021-02-21 19:07:45,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:07:45,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1452490795] [2021-02-21 19:07:45,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:07:45,461 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:07:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:45,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:45,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:45,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:45,887 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:46,273 WARN L202 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:07:46,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:07:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:46,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:46,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:46,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:07:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:46,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:46,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:46,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:07:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:46,531 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:46,533 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:46,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:07:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:46,545 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:46,545 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:46,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:07:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:46,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:46,557 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:46,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-21 19:07:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:46,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:46,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:46,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:07:46,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:46,575 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:46,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:07:46,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1452490795] [2021-02-21 19:07:46,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:07:46,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 19:07:46,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395198619] [2021-02-21 19:07:46,639 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 19:07:46,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:07:46,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 19:07:46,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:07:46,655 INFO L87 Difference]: Start difference. First operand 289 states. Second operand 3 states. [2021-02-21 19:07:48,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:07:48,645 INFO L93 Difference]: Finished difference Result 416 states and 495 transitions. [2021-02-21 19:07:48,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 19:07:48,648 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-21 19:07:48,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:07:48,667 INFO L225 Difference]: With dead ends: 416 [2021-02-21 19:07:48,667 INFO L226 Difference]: Without dead ends: 267 [2021-02-21 19:07:48,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 19:07:48,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-02-21 19:07:48,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 227. [2021-02-21 19:07:48,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2021-02-21 19:07:48,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 243 transitions. [2021-02-21 19:07:48,857 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 243 transitions. Word has length 147 [2021-02-21 19:07:48,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:07:48,858 INFO L480 AbstractCegarLoop]: Abstraction has 227 states and 243 transitions. [2021-02-21 19:07:48,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 19:07:48,858 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 243 transitions. [2021-02-21 19:07:48,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-21 19:07:48,865 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:07:48,865 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] [2021-02-21 19:07:48,866 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 19:07:48,866 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:07:48,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:07:48,867 INFO L82 PathProgramCache]: Analyzing trace with hash 915986561, now seen corresponding path program 1 times [2021-02-21 19:07:48,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:07:48,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636820782] [2021-02-21 19:07:48,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:07:48,874 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:07:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:49,007 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:49,008 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:49,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:49,010 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:49,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:49,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:49,358 WARN L202 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:07:49,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:07:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:49,431 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:49,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:49,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:07:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:49,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:49,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:49,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:07:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:49,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:49,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:49,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:07:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:49,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:49,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:49,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:07:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:49,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:49,461 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:49,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-21 19:07:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:49,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:49,465 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:49,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:07:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:49,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:49,472 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:49,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:07:49,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636820782] [2021-02-21 19:07:49,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:07:49,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 19:07:49,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915345920] [2021-02-21 19:07:49,511 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 19:07:49,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:07:49,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 19:07:49,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 19:07:49,513 INFO L87 Difference]: Start difference. First operand 227 states and 243 transitions. Second operand 4 states. [2021-02-21 19:07:50,400 WARN L202 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:07:51,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:07:51,342 INFO L93 Difference]: Finished difference Result 328 states and 365 transitions. [2021-02-21 19:07:51,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 19:07:51,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-21 19:07:51,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:07:51,349 INFO L225 Difference]: With dead ends: 328 [2021-02-21 19:07:51,349 INFO L226 Difference]: Without dead ends: 250 [2021-02-21 19:07:51,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 19:07:51,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-02-21 19:07:51,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 217. [2021-02-21 19:07:51,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-21 19:07:51,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 230 transitions. [2021-02-21 19:07:51,476 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 230 transitions. Word has length 148 [2021-02-21 19:07:51,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:07:51,477 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 230 transitions. [2021-02-21 19:07:51,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 19:07:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 230 transitions. [2021-02-21 19:07:51,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-02-21 19:07:51,480 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:07:51,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:07:51,481 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 19:07:51,481 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:07:51,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:07:51,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1445453581, now seen corresponding path program 1 times [2021-02-21 19:07:51,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:07:51,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1611601947] [2021-02-21 19:07:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:07:51,486 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:07:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:51,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:51,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:51,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:51,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:51,607 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:51,608 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:51,613 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:51,613 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:51,615 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:51,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:07:51,622 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:51,623 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:51,966 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:07:51,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:07:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:52,009 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:52,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:52,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:07:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:52,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:52,018 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:52,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:07:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:52,022 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:52,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:52,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:07:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:52,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:52,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:52,043 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:52,044 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:07:52,060 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:52,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:07:52,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:07:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:52,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:52,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:52,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:07:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:52,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:52,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:52,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-02-21 19:07:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:52,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:52,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-02-21 19:07:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:52,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:52,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:52,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:07:52,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1611601947] [2021-02-21 19:07:52,230 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:07:52,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-21 19:07:52,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050599521] [2021-02-21 19:07:52,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-21 19:07:52,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:07:52,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-21 19:07:52,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-21 19:07:52,234 INFO L87 Difference]: Start difference. First operand 217 states and 230 transitions. Second operand 10 states. [2021-02-21 19:07:52,924 WARN L202 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:07:53,426 WARN L202 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:07:53,847 WARN L202 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-21 19:07:54,281 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:07:54,699 WARN L202 SmtUtils]: Spent 378.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:07:55,066 WARN L202 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:07:56,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:07:56,706 INFO L93 Difference]: Finished difference Result 374 states and 427 transitions. [2021-02-21 19:07:56,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:07:56,707 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 161 [2021-02-21 19:07:56,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:07:56,720 INFO L225 Difference]: With dead ends: 374 [2021-02-21 19:07:56,720 INFO L226 Difference]: Without dead ends: 272 [2021-02-21 19:07:56,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-02-21 19:07:56,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-02-21 19:07:56,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 217. [2021-02-21 19:07:56,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2021-02-21 19:07:56,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 229 transitions. [2021-02-21 19:07:56,832 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 229 transitions. Word has length 161 [2021-02-21 19:07:56,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:07:56,832 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 229 transitions. [2021-02-21 19:07:56,833 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-21 19:07:56,833 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 229 transitions. [2021-02-21 19:07:56,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-02-21 19:07:56,835 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:07:56,836 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] [2021-02-21 19:07:56,836 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 19:07:56,836 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:07:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:07:56,837 INFO L82 PathProgramCache]: Analyzing trace with hash -910999285, now seen corresponding path program 1 times [2021-02-21 19:07:56,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:07:56,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1609298313] [2021-02-21 19:07:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:07:56,841 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:07:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:56,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:56,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:56,945 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:56,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:56,947 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:56,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:56,952 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:56,953 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:56,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:56,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:07:56,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:56,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:07:56,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:56,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:07:56,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:56,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:07:56,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:56,974 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:07:56,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:56,982 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 19:07:56,990 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:56,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:57,343 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:07:57,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:07:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:57,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:57,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:57,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:57,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 19:07:57,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:07:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:57,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:57,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:57,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:07:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:57,498 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:57,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:57,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:07:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:57,516 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:57,517 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:57,518 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:57,519 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 19:07:57,553 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-21 19:07:57,558 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-21 19:07:57,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:07:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:57,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:57,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:57,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:07:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:57,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:57,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:57,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-21 19:07:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:57,655 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:57,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:57,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:07:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:57,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:57,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:57,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-21 19:07:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:57,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:57,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:57,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:57,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:57,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:57,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:07:57,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-02-21 19:07:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:07:57,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:07:57,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:07:57,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:07:57,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1609298313] [2021-02-21 19:07:57,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:07:57,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-02-21 19:07:57,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857961398] [2021-02-21 19:07:57,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 19:07:57,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:07:57,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 19:07:57,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:07:57,822 INFO L87 Difference]: Start difference. First operand 217 states and 229 transitions. Second operand 15 states. [2021-02-21 19:07:58,610 WARN L202 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:07:59,142 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:07:59,567 WARN L202 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:07:59,993 WARN L202 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:08:00,383 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:08:00,784 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:08:01,686 WARN L202 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-21 19:08:03,053 WARN L202 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:08:03,483 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:08:03,997 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:08:04,463 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-21 19:08:04,851 WARN L202 SmtUtils]: Spent 348.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:08:05,263 WARN L202 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:08:05,683 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-21 19:08:06,085 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:08:06,485 WARN L202 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:08:06,949 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:08:07,526 WARN L202 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-21 19:08:07,958 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-21 19:08:08,447 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-21 19:08:10,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:08:10,883 INFO L93 Difference]: Finished difference Result 738 states and 934 transitions. [2021-02-21 19:08:10,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-02-21 19:08:10,885 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 169 [2021-02-21 19:08:10,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:08:10,892 INFO L225 Difference]: With dead ends: 738 [2021-02-21 19:08:10,892 INFO L226 Difference]: Without dead ends: 636 [2021-02-21 19:08:10,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=386, Invalid=1336, Unknown=0, NotChecked=0, Total=1722 [2021-02-21 19:08:10,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-02-21 19:08:11,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 397. [2021-02-21 19:08:11,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2021-02-21 19:08:11,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 435 transitions. [2021-02-21 19:08:11,113 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 435 transitions. Word has length 169 [2021-02-21 19:08:11,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:08:11,114 INFO L480 AbstractCegarLoop]: Abstraction has 397 states and 435 transitions. [2021-02-21 19:08:11,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 19:08:11,115 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 435 transitions. [2021-02-21 19:08:11,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-02-21 19:08:11,118 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:08:11,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 19:08:11,118 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 19:08:11,119 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:08:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:08:11,120 INFO L82 PathProgramCache]: Analyzing trace with hash 473787990, now seen corresponding path program 1 times [2021-02-21 19:08:11,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:08:11,120 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619550353] [2021-02-21 19:08:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:08:11,124 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 19:08:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:08:11,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,238 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:08:11,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:08:11,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:08:11,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:08:11,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:08:11,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:08:11,582 WARN L202 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-21 19:08:11,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 19:08:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:08:11,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:08:11,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,688 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 19:08:11,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-21 19:08:11,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:08:11,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,699 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:08:11,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-21 19:08:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:08:11,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:08:11,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-21 19:08:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:08:11,711 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,712 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:08:11,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-21 19:08:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:08:11,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:08:11,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-21 19:08:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:08:11,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:08:11,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-21 19:08:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:08:11,744 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:08:11,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-02-21 19:08:11,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:08:11,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:08:11,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 19:08:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:08:11,761 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:08:11,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-02-21 19:08:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:08:11,765 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:08:11,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-02-21 19:08:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 19:08:11,769 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:11,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 19:08:11,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 19:08:11,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619550353] [2021-02-21 19:08:11,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 19:08:11,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 19:08:11,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025187698] [2021-02-21 19:08:11,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 19:08:11,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 19:08:11,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 19:08:11,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-02-21 19:08:11,822 INFO L87 Difference]: Start difference. First operand 397 states and 435 transitions. Second operand 7 states. [2021-02-21 19:08:12,502 WARN L202 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-21 19:08:13,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 19:08:13,665 INFO L93 Difference]: Finished difference Result 677 states and 788 transitions. [2021-02-21 19:08:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-21 19:08:13,666 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 174 [2021-02-21 19:08:13,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 19:08:13,678 INFO L225 Difference]: With dead ends: 677 [2021-02-21 19:08:13,678 INFO L226 Difference]: Without dead ends: 395 [2021-02-21 19:08:13,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-02-21 19:08:13,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-02-21 19:08:13,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 308. [2021-02-21 19:08:13,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2021-02-21 19:08:13,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 325 transitions. [2021-02-21 19:08:13,838 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 325 transitions. Word has length 174 [2021-02-21 19:08:13,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 19:08:13,839 INFO L480 AbstractCegarLoop]: Abstraction has 308 states and 325 transitions. [2021-02-21 19:08:13,839 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 19:08:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 325 transitions. [2021-02-21 19:08:13,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-02-21 19:08:13,843 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 19:08:13,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-02-21 19:08:13,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 19:08:13,844 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 19:08:13,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 19:08:13,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1053508853, now seen corresponding path program 1 times [2021-02-21 19:08:13,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 19:08:13,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155737039] [2021-02-21 19:08:13,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 19:08:13,958 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 19:08:13,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1