/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_product13.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:33:51,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:33:51,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:33:51,710 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:33:51,711 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:33:51,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:33:51,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:33:51,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:33:51,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:33:51,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:33:51,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:33:51,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:33:51,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:33:51,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:33:51,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:33:51,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:33:51,766 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:33:51,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:33:51,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:33:51,779 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:33:51,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:33:51,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:33:51,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:33:51,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:33:51,798 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:33:51,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:33:51,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:33:51,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:33:51,805 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:33:51,806 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:33:51,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:33:51,808 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:33:51,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:33:51,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:33:51,812 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:33:51,812 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:33:51,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:33:51,813 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:33:51,813 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:33:51,814 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:33:51,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:33:51,817 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 16:33:51,846 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:33:51,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:33:51,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:33:51,853 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:33:51,853 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:33:51,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:33:51,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:33:51,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:33:51,854 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:33:51,854 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:33:51,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:33:51,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:33:51,856 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:33:51,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:33:51,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:33:51,857 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:33:51,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:33:51,858 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:33:51,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:33:51,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:33:51,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:33:51,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:33:51,859 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:33:52,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:33:52,399 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:33:52,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:33:52,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:33:52,408 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:33:52,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product13.cil.c [2021-02-23 16:33:52,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5073d69b1/bba45212e2994db781dfde0a7d3c0f5f/FLAG57d359252 [2021-02-23 16:33:53,266 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:33:53,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product13.cil.c [2021-02-23 16:33:53,289 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5073d69b1/bba45212e2994db781dfde0a7d3c0f5f/FLAG57d359252 [2021-02-23 16:33:53,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5073d69b1/bba45212e2994db781dfde0a7d3c0f5f [2021-02-23 16:33:53,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:33:53,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:33:53,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:33:53,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:33:53,591 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:33:53,592 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:33:53" (1/1) ... [2021-02-23 16:33:53,594 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@519fe746 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:33:53, skipping insertion in model container [2021-02-23 16:33:53,594 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:33:53" (1/1) ... [2021-02-23 16:33:53,604 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:33:53,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:33:53,959 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_product13.cil.c[12170,12183] [2021-02-23 16:33:54,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:33:54,048 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:33:54,115 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_product13.cil.c[12170,12183] [2021-02-23 16:33:54,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:33:54,210 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:33:54,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:33:54 WrapperNode [2021-02-23 16:33:54,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:33:54,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:33:54,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:33:54,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:33:54,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:33:54" (1/1) ... [2021-02-23 16:33:54,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:33:54" (1/1) ... [2021-02-23 16:33:54,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:33:54" (1/1) ... [2021-02-23 16:33:54,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:33:54" (1/1) ... [2021-02-23 16:33:54,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:33:54" (1/1) ... [2021-02-23 16:33:54,339 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:33:54" (1/1) ... [2021-02-23 16:33:54,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:33:54" (1/1) ... [2021-02-23 16:33:54,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:33:54,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:33:54,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:33:54,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:33:54,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:33:54" (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 [2021-02-23 16:33:54,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:33:54,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:33:54,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:33:54,489 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:33:54,489 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:33:54,490 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:33:54,490 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:33:54,490 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:33:54,491 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:33:54,491 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:33:54,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:33:54,492 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:33:54,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:33:54,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:33:54,493 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:33:54,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:33:54,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:33:54,495 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:33:54,496 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:33:54,496 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:33:54,499 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:33:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:33:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:33:54,500 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:33:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:33:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:33:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2021-02-23 16:33:54,501 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:33:54,502 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:33:54,506 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:33:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:33:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:33:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:33:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:33:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:33:54,507 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:33:54,508 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:33:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:33:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:33:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:33:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:33:54,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:33:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:33:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:33:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:33:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:33:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:33:54,509 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:33:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:33:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:33:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:33:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:33:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:33:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:33:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:33:54,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:33:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:33:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:33:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:33:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:33:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:33:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:33:54,511 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:33:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:33:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:33:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:33:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2021-02-23 16:33:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:33:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:33:54,512 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:33:54,513 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:33:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:33:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:33:54,514 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:33:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:33:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:33:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:33:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:33:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:33:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:33:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:33:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2021-02-23 16:33:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:33:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2021-02-23 16:33:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:33:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:33:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:33:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:33:56,063 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:33:56,063 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:33:56,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:33:56 BoogieIcfgContainer [2021-02-23 16:33:56,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:33:56,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:33:56,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:33:56,074 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:33:56,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:33:53" (1/3) ... [2021-02-23 16:33:56,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144fa248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:33:56, skipping insertion in model container [2021-02-23 16:33:56,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:33:54" (2/3) ... [2021-02-23 16:33:56,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144fa248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:33:56, skipping insertion in model container [2021-02-23 16:33:56,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:33:56" (3/3) ... [2021-02-23 16:33:56,078 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product13.cil.c [2021-02-23 16:33:56,086 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:33:56,093 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:33:56,116 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:33:56,146 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:33:56,146 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:33:56,146 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:33:56,146 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:33:56,146 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:33:56,147 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:33:56,147 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:33:56,147 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:33:56,172 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states. [2021-02-23 16:33:56,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-02-23 16:33:56,193 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:33:56,195 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] [2021-02-23 16:33:56,196 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:33:56,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:33:56,203 INFO L82 PathProgramCache]: Analyzing trace with hash -729966181, now seen corresponding path program 1 times [2021-02-23 16:33:56,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:33:56,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493065010] [2021-02-23 16:33:56,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:33:56,307 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:33:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:33:56,683 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:33:56,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:33:56,686 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:33:56,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:33:57,047 WARN L202 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:33:57,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:33:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:33:57,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:33:57,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:33:57,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:33:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:33:57,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:33:57,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:33:57,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:33:57,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:33:57,210 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:33:57,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:33:57,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:33:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:33:57,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:33:57,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:33:57,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:33:57,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:33:57,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:33:57,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:33:57,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-02-23 16:33:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:33:57,226 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:33:57,226 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:33:57,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:33:57,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:33:57,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:33:57,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:33:57,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:33:57,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493065010] [2021-02-23 16:33:57,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:33:57,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:33:57,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850884097] [2021-02-23 16:33:57,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:33:57,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:33:57,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:33:57,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:33:57,342 INFO L87 Difference]: Start difference. First operand 285 states. Second operand 3 states. [2021-02-23 16:33:59,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:33:59,116 INFO L93 Difference]: Finished difference Result 407 states and 485 transitions. [2021-02-23 16:33:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:33:59,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2021-02-23 16:33:59,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:33:59,137 INFO L225 Difference]: With dead ends: 407 [2021-02-23 16:33:59,137 INFO L226 Difference]: Without dead ends: 262 [2021-02-23 16:33:59,143 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 [2021-02-23 16:33:59,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-02-23 16:33:59,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 223. [2021-02-23 16:33:59,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2021-02-23 16:33:59,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 239 transitions. [2021-02-23 16:33:59,307 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 239 transitions. Word has length 147 [2021-02-23 16:33:59,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:33:59,308 INFO L480 AbstractCegarLoop]: Abstraction has 223 states and 239 transitions. [2021-02-23 16:33:59,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:33:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 239 transitions. [2021-02-23 16:33:59,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-02-23 16:33:59,314 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:33:59,314 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] [2021-02-23 16:33:59,314 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:33:59,315 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:33:59,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:33:59,316 INFO L82 PathProgramCache]: Analyzing trace with hash -785285728, now seen corresponding path program 1 times [2021-02-23 16:33:59,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:33:59,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203432199] [2021-02-23 16:33:59,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:33:59,321 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:33:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:33:59,489 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:33:59,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:33:59,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:33:59,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:33:59,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:33:59,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:33:59,901 WARN L202 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:33:59,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:33:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:00,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:00,027 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:00,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:34:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:00,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:00,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:00,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:34:00,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:00,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:00,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:00,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:34:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:00,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:00,079 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:00,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:34:00,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:00,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:00,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:00,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:34:00,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:00,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:00,092 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:00,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:34:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:00,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:00,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:34:00,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203432199] [2021-02-23 16:34:00,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:34:00,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:34:00,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554303392] [2021-02-23 16:34:00,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:34:00,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:34:00,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:34:00,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:34:00,154 INFO L87 Difference]: Start difference. First operand 223 states and 239 transitions. Second operand 4 states. [2021-02-23 16:34:01,108 WARN L202 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:34:02,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:34:02,069 INFO L93 Difference]: Finished difference Result 323 states and 359 transitions. [2021-02-23 16:34:02,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:34:02,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2021-02-23 16:34:02,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:34:02,076 INFO L225 Difference]: With dead ends: 323 [2021-02-23 16:34:02,077 INFO L226 Difference]: Without dead ends: 245 [2021-02-23 16:34:02,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:34:02,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-02-23 16:34:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 213. [2021-02-23 16:34:02,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-02-23 16:34:02,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 226 transitions. [2021-02-23 16:34:02,186 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 226 transitions. Word has length 148 [2021-02-23 16:34:02,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:34:02,187 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 226 transitions. [2021-02-23 16:34:02,188 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:34:02,188 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 226 transitions. [2021-02-23 16:34:02,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-02-23 16:34:02,190 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:34:02,191 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] [2021-02-23 16:34:02,191 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:34:02,191 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:34:02,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:34:02,192 INFO L82 PathProgramCache]: Analyzing trace with hash -88979863, now seen corresponding path program 1 times [2021-02-23 16:34:02,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:34:02,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892796501] [2021-02-23 16:34:02,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:34:02,197 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:34:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:02,373 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:02,374 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:02,381 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:02,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:02,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:02,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:02,398 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:02,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:34:02,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:02,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:02,758 WARN L202 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:34:02,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:34:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:02,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:02,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:02,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:02,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:34:02,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:34:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:02,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:02,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:02,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:34:02,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:02,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:02,892 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:02,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:34:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:02,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:02,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:02,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:02,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:34:02,947 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:34:02,950 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:34:02,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:34:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:02,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:02,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:02,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-02-23 16:34:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:02,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:02,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:02,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:34:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:02,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:02,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:34:03,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892796501] [2021-02-23 16:34:03,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:34:03,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:34:03,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226666552] [2021-02-23 16:34:03,061 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:34:03,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:34:03,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:34:03,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:34:03,065 INFO L87 Difference]: Start difference. First operand 213 states and 226 transitions. Second operand 9 states. [2021-02-23 16:34:03,750 WARN L202 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:34:04,228 WARN L202 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:34:04,649 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:34:05,073 WARN L202 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:34:05,486 WARN L202 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:34:05,856 WARN L202 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:34:07,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:34:07,357 INFO L93 Difference]: Finished difference Result 343 states and 384 transitions. [2021-02-23 16:34:07,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 16:34:07,357 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2021-02-23 16:34:07,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:34:07,361 INFO L225 Difference]: With dead ends: 343 [2021-02-23 16:34:07,362 INFO L226 Difference]: Without dead ends: 245 [2021-02-23 16:34:07,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-02-23 16:34:07,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-02-23 16:34:07,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 213. [2021-02-23 16:34:07,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2021-02-23 16:34:07,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 225 transitions. [2021-02-23 16:34:07,472 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 225 transitions. Word has length 157 [2021-02-23 16:34:07,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:34:07,474 INFO L480 AbstractCegarLoop]: Abstraction has 213 states and 225 transitions. [2021-02-23 16:34:07,474 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:34:07,474 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 225 transitions. [2021-02-23 16:34:07,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-02-23 16:34:07,477 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:34:07,477 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] [2021-02-23 16:34:07,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:34:07,478 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:34:07,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:34:07,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1686668618, now seen corresponding path program 1 times [2021-02-23 16:34:07,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:34:07,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18669262] [2021-02-23 16:34:07,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:34:07,484 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:34:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:07,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:07,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:07,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:07,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:07,577 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:07,578 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:07,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:07,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:07,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:07,589 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:34:07,596 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:07,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:34:07,598 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:07,599 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:34:07,599 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:07,600 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:34:07,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:07,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:34:07,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:07,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:34:07,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:07,622 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,054 WARN L202 SmtUtils]: Spent 400.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:34:08,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:34:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:34:08,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:34:08,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:34:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:34:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,159 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:34:08,184 WARN L141 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size [2021-02-23 16:34:08,185 WARN L147 QuantifierPusher]: treesize reduction 22, result has 33.3 percent of original size 11 [2021-02-23 16:34:08,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:34:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,209 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,210 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-02-23 16:34:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,233 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:34:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,237 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-02-23 16:34:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:08,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:08,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-02-23 16:34:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:08,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:08,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:08,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:34:08,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18669262] [2021-02-23 16:34:08,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:34:08,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-23 16:34:08,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68938235] [2021-02-23 16:34:08,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-23 16:34:08,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:34:08,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-23 16:34:08,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-02-23 16:34:08,361 INFO L87 Difference]: Start difference. First operand 213 states and 225 transitions. Second operand 14 states. [2021-02-23 16:34:09,101 WARN L202 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:34:09,636 WARN L202 SmtUtils]: Spent 361.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:34:10,031 WARN L202 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:34:10,454 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:34:10,896 WARN L202 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:34:11,302 WARN L202 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:34:12,257 WARN L202 SmtUtils]: Spent 408.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:34:13,541 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:34:14,000 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:34:14,553 WARN L202 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:34:15,015 WARN L202 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:34:15,413 WARN L202 SmtUtils]: Spent 358.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:34:15,785 WARN L202 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:34:16,207 WARN L202 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 209 [2021-02-23 16:34:16,640 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:34:17,057 WARN L202 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:34:17,533 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:34:18,119 WARN L202 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2021-02-23 16:34:18,564 WARN L202 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:34:19,049 WARN L202 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:34:20,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:34:20,464 INFO L93 Difference]: Finished difference Result 586 states and 704 transitions. [2021-02-23 16:34:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-02-23 16:34:20,465 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2021-02-23 16:34:20,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:34:20,470 INFO L225 Difference]: With dead ends: 586 [2021-02-23 16:34:20,470 INFO L226 Difference]: Without dead ends: 488 [2021-02-23 16:34:20,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=252, Invalid=1008, Unknown=0, NotChecked=0, Total=1260 [2021-02-23 16:34:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-02-23 16:34:20,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 385. [2021-02-23 16:34:20,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2021-02-23 16:34:20,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 423 transitions. [2021-02-23 16:34:20,705 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 423 transitions. Word has length 165 [2021-02-23 16:34:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:34:20,705 INFO L480 AbstractCegarLoop]: Abstraction has 385 states and 423 transitions. [2021-02-23 16:34:20,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-23 16:34:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 423 transitions. [2021-02-23 16:34:20,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-02-23 16:34:20,709 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:34:20,709 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] [2021-02-23 16:34:20,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:34:20,710 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:34:20,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:34:20,711 INFO L82 PathProgramCache]: Analyzing trace with hash 90893772, now seen corresponding path program 1 times [2021-02-23 16:34:20,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:34:20,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112196076] [2021-02-23 16:34:20,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:34:20,715 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:34:20,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:20,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:20,789 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:20,793 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:20,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:20,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:20,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:20,795 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:20,796 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:20,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:20,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:20,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:20,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:21,140 WARN L202 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:34:21,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:34:21,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:21,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:21,201 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:21,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:21,202 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:34:21,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:34:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:21,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:21,211 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:21,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:34:21,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:21,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:21,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:21,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:34:21,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:21,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:21,221 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:21,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:34:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:21,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:21,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:21,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-02-23 16:34:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:21,236 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:21,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:21,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:34:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:21,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:21,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:21,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-23 16:34:21,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:21,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:21,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:21,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-02-23 16:34:21,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:21,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:21,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:21,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-02-23 16:34:21,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:34:21,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:21,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:34:21,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 16:34:21,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112196076] [2021-02-23 16:34:21,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:34:21,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:34:21,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924672626] [2021-02-23 16:34:21,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:34:21,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:34:21,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:34:21,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:34:21,305 INFO L87 Difference]: Start difference. First operand 385 states and 423 transitions. Second operand 6 states. [2021-02-23 16:34:22,003 WARN L202 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:34:22,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:34:22,823 INFO L93 Difference]: Finished difference Result 587 states and 667 transitions. [2021-02-23 16:34:22,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-23 16:34:22,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2021-02-23 16:34:22,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:34:22,829 INFO L225 Difference]: With dead ends: 587 [2021-02-23 16:34:22,830 INFO L226 Difference]: Without dead ends: 317 [2021-02-23 16:34:22,831 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:34:22,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-02-23 16:34:22,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 296. [2021-02-23 16:34:22,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2021-02-23 16:34:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 313 transitions. [2021-02-23 16:34:22,960 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 313 transitions. Word has length 170 [2021-02-23 16:34:22,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:34:22,960 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 313 transitions. [2021-02-23 16:34:22,960 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:34:22,960 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 313 transitions. [2021-02-23 16:34:22,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-02-23 16:34:22,965 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:34:22,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:34:22,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:34:22,966 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:34:22,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:34:22,967 INFO L82 PathProgramCache]: Analyzing trace with hash 274035482, now seen corresponding path program 1 times [2021-02-23 16:34:22,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:34:22,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29694875] [2021-02-23 16:34:22,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:34:23,610 WARN L202 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 113 [2021-02-23 16:34:23,644 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:23,653 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-02-23 16:34:24,215 WARN L202 SmtUtils]: Spent 513.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 112 [2021-02-23 16:34:24,228 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:34:24,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249