/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_spec3_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 16:26:24,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 16:26:24,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 16:26:24,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 16:26:24,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 16:26:24,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 16:26:24,307 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 16:26:24,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 16:26:24,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 16:26:24,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 16:26:24,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 16:26:24,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 16:26:24,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 16:26:24,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 16:26:24,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 16:26:24,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 16:26:24,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 16:26:24,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 16:26:24,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 16:26:24,355 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 16:26:24,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 16:26:24,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 16:26:24,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 16:26:24,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 16:26:24,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 16:26:24,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 16:26:24,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 16:26:24,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 16:26:24,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 16:26:24,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 16:26:24,400 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 16:26:24,401 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 16:26:24,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 16:26:24,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 16:26:24,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 16:26:24,404 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 16:26:24,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 16:26:24,405 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 16:26:24,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 16:26:24,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 16:26:24,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 16:26:24,408 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 16:26:24,420 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 16:26:24,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 16:26:24,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 16:26:24,422 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 16:26:24,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 16:26:24,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 16:26:24,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 16:26:24,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 16:26:24,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 16:26:24,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 16:26:24,423 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 16:26:24,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 16:26:24,424 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 16:26:24,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 16:26:24,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 16:26:24,424 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 16:26:24,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 16:26:24,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 16:26:24,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 16:26:24,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 16:26:24,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 16:26:24,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 16:26:24,426 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 16:26:24,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 16:26:24,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 16:26:24,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 16:26:24,804 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 16:26:24,804 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 16:26:24,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product52.cil.c [2021-02-23 16:26:24,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4416f1ed7/f136b5a0a7ce47de8b2b987911f062f2/FLAG8f7a0b675 [2021-02-23 16:26:25,508 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 16:26:25,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product52.cil.c [2021-02-23 16:26:25,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4416f1ed7/f136b5a0a7ce47de8b2b987911f062f2/FLAG8f7a0b675 [2021-02-23 16:26:25,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4416f1ed7/f136b5a0a7ce47de8b2b987911f062f2 [2021-02-23 16:26:25,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 16:26:25,822 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 16:26:25,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 16:26:25,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 16:26:25,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 16:26:25,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:26:25" (1/1) ... [2021-02-23 16:26:25,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b2dab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:25, skipping insertion in model container [2021-02-23 16:26:25,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 04:26:25" (1/1) ... [2021-02-23 16:26:25,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 16:26:25,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 16:26:26,238 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_spec3_product52.cil.c[16932,16945] [2021-02-23 16:26:26,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:26:26,290 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 16:26:26,426 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_spec3_product52.cil.c[16932,16945] [2021-02-23 16:26:26,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 16:26:26,480 INFO L208 MainTranslator]: Completed translation [2021-02-23 16:26:26,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:26 WrapperNode [2021-02-23 16:26:26,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 16:26:26,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 16:26:26,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 16:26:26,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 16:26:26,538 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:26" (1/1) ... [2021-02-23 16:26:26,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:26" (1/1) ... [2021-02-23 16:26:26,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:26" (1/1) ... [2021-02-23 16:26:26,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:26" (1/1) ... [2021-02-23 16:26:26,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:26" (1/1) ... [2021-02-23 16:26:26,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:26" (1/1) ... [2021-02-23 16:26:26,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:26" (1/1) ... [2021-02-23 16:26:26,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 16:26:26,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 16:26:26,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 16:26:26,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 16:26:26,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:26" (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 16:26:26,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 16:26:26,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 16:26:26,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-02-23 16:26:26,741 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 16:26:26,741 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:26:26,741 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2021-02-23 16:26:26,741 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2021-02-23 16:26:26,741 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2021-02-23 16:26:26,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2021-02-23 16:26:26,742 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2021-02-23 16:26:26,742 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2021-02-23 16:26:26,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2021-02-23 16:26:26,742 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2021-02-23 16:26:26,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2021-02-23 16:26:26,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2021-02-23 16:26:26,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2021-02-23 16:26:26,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2021-02-23 16:26:26,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2021-02-23 16:26:26,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2021-02-23 16:26:26,744 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-02-23 16:26:26,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2021-02-23 16:26:26,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:26:26,744 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2021-02-23 16:26:26,744 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2021-02-23 16:26:26,745 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2021-02-23 16:26:26,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2021-02-23 16:26:26,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2021-02-23 16:26:26,745 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2021-02-23 16:26:26,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2021-02-23 16:26:26,745 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2021-02-23 16:26:26,746 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2021-02-23 16:26:26,746 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2021-02-23 16:26:26,746 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2021-02-23 16:26:26,746 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-02-23 16:26:26,746 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2021-02-23 16:26:26,746 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2021-02-23 16:26:26,747 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2021-02-23 16:26:26,747 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2021-02-23 16:26:26,747 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-02-23 16:26:26,747 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2021-02-23 16:26:26,747 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2021-02-23 16:26:26,747 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2021-02-23 16:26:26,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 16:26:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 16:26:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 16:26:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 16:26:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 16:26:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 16:26:26,748 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2021-02-23 16:26:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-02-23 16:26:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2021-02-23 16:26:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2021-02-23 16:26:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2021-02-23 16:26:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2021-02-23 16:26:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2021-02-23 16:26:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2021-02-23 16:26:26,749 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2021-02-23 16:26:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2021-02-23 16:26:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2021-02-23 16:26:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2021-02-23 16:26:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 16:26:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 16:26:26,750 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2021-02-23 16:26:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 16:26:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 16:26:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 16:26:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 16:26:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2021-02-23 16:26:26,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 16:26:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2021-02-23 16:26:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-02-23 16:26:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 16:26:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2021-02-23 16:26:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2021-02-23 16:26:26,752 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2021-02-23 16:26:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-02-23 16:26:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2021-02-23 16:26:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2021-02-23 16:26:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2021-02-23 16:26:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2021-02-23 16:26:26,753 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2021-02-23 16:26:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2021-02-23 16:26:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2021-02-23 16:26:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2021-02-23 16:26:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2021-02-23 16:26:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2021-02-23 16:26:26,754 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2021-02-23 16:26:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-02-23 16:26:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure test [2021-02-23 16:26:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2021-02-23 16:26:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2021-02-23 16:26:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2021-02-23 16:26:26,755 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2021-02-23 16:26:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2021-02-23 16:26:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2021-02-23 16:26:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2021-02-23 16:26:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 16:26:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 16:26:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 16:26:26,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 16:26:28,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 16:26:28,414 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-23 16:26:28,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:26:28 BoogieIcfgContainer [2021-02-23 16:26:28,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 16:26:28,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 16:26:28,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 16:26:28,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 16:26:28,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 04:26:25" (1/3) ... [2021-02-23 16:26:28,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b197a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:26:28, skipping insertion in model container [2021-02-23 16:26:28,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 04:26:26" (2/3) ... [2021-02-23 16:26:28,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b197a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 04:26:28, skipping insertion in model container [2021-02-23 16:26:28,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 04:26:28" (3/3) ... [2021-02-23 16:26:28,427 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product52.cil.c [2021-02-23 16:26:28,438 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 16:26:28,444 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 16:26:28,464 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 16:26:28,498 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 16:26:28,499 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 16:26:28,499 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 16:26:28,499 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 16:26:28,499 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 16:26:28,500 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 16:26:28,500 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 16:26:28,500 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 16:26:28,528 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states. [2021-02-23 16:26:28,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-02-23 16:26:28,551 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:26:28,552 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] [2021-02-23 16:26:28,553 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:26:28,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:26:28,559 INFO L82 PathProgramCache]: Analyzing trace with hash 991455276, now seen corresponding path program 1 times [2021-02-23 16:26:28,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:26:28,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [305091812] [2021-02-23 16:26:28,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:26:28,653 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:26:28,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:29,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:29,038 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:29,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:29,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:29,672 WARN L202 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:26:29,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:26:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:29,754 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:29,755 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:29,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:26:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:29,773 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:29,774 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:29,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:26:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:29,777 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:29,778 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:29,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:26:29,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:29,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:29,783 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:29,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:26:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:29,787 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:29,787 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:29,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-02-23 16:26:29,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:29,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:29,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:29,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-02-23 16:26:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:29,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:29,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:29,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-02-23 16:26:29,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:29,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:29,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:29,861 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 16:26:29,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [305091812] [2021-02-23 16:26:29,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:26:29,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 16:26:29,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625669049] [2021-02-23 16:26:29,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 16:26:29,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:26:29,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 16:26:29,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:26:29,887 INFO L87 Difference]: Start difference. First operand 345 states. Second operand 3 states. [2021-02-23 16:26:32,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:26:32,436 INFO L93 Difference]: Finished difference Result 540 states and 639 transitions. [2021-02-23 16:26:32,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 16:26:32,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 158 [2021-02-23 16:26:32,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:26:32,456 INFO L225 Difference]: With dead ends: 540 [2021-02-23 16:26:32,456 INFO L226 Difference]: Without dead ends: 331 [2021-02-23 16:26:32,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 16:26:32,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-02-23 16:26:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 287. [2021-02-23 16:26:32,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2021-02-23 16:26:32,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 312 transitions. [2021-02-23 16:26:32,659 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 312 transitions. Word has length 158 [2021-02-23 16:26:32,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:26:32,660 INFO L480 AbstractCegarLoop]: Abstraction has 287 states and 312 transitions. [2021-02-23 16:26:32,660 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 16:26:32,660 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 312 transitions. [2021-02-23 16:26:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-02-23 16:26:32,666 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:26:32,666 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] [2021-02-23 16:26:32,667 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 16:26:32,667 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:26:32,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:26:32,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1176692018, now seen corresponding path program 1 times [2021-02-23 16:26:32,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:26:32,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412580477] [2021-02-23 16:26:32,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:26:32,673 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:26:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:32,796 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:32,797 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:32,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:32,802 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:32,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:32,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:33,419 WARN L202 SmtUtils]: Spent 589.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:26:33,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:26:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:33,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:33,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:33,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:26:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:33,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:33,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:33,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:26:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:33,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:33,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:33,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:26:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:33,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:33,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:33,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:26:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:33,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:33,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:33,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-02-23 16:26:33,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:33,534 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:33,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:33,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-02-23 16:26:33,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:33,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:33,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:33,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-02-23 16:26:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:33,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:33,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:33,575 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 16:26:33,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412580477] [2021-02-23 16:26:33,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:26:33,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 16:26:33,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061302292] [2021-02-23 16:26:33,577 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 16:26:33,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:26:33,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 16:26:33,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 16:26:33,578 INFO L87 Difference]: Start difference. First operand 287 states and 312 transitions. Second operand 4 states. [2021-02-23 16:26:34,750 WARN L202 SmtUtils]: Spent 592.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:26:36,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:26:36,561 INFO L93 Difference]: Finished difference Result 446 states and 501 transitions. [2021-02-23 16:26:36,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 16:26:36,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2021-02-23 16:26:36,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:26:36,567 INFO L225 Difference]: With dead ends: 446 [2021-02-23 16:26:36,567 INFO L226 Difference]: Without dead ends: 314 [2021-02-23 16:26:36,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 16:26:36,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-02-23 16:26:36,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 277. [2021-02-23 16:26:36,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2021-02-23 16:26:36,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 299 transitions. [2021-02-23 16:26:36,689 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 299 transitions. Word has length 159 [2021-02-23 16:26:36,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:26:36,690 INFO L480 AbstractCegarLoop]: Abstraction has 277 states and 299 transitions. [2021-02-23 16:26:36,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 16:26:36,690 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 299 transitions. [2021-02-23 16:26:36,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-02-23 16:26:36,694 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:26:36,694 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] [2021-02-23 16:26:36,694 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 16:26:36,695 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:26:36,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:26:36,695 INFO L82 PathProgramCache]: Analyzing trace with hash 274929298, now seen corresponding path program 1 times [2021-02-23 16:26:36,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:26:36,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988170104] [2021-02-23 16:26:36,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:26:36,699 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:26:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:36,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:36,791 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:36,792 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:36,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:36,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:36,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:36,806 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:36,806 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:36,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:36,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 16:26:36,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:36,818 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:37,513 WARN L202 SmtUtils]: Spent 674.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:26:37,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:26:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:37,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:37,553 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:37,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:26:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:37,561 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:37,562 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:37,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:26:37,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:37,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:37,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:37,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:26:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:37,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:37,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:37,582 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:37,583 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:26:37,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:37,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 16:26:37,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:26:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:37,631 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:37,631 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:37,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-02-23 16:26:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:37,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:37,655 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:37,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:26:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:37,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:37,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:37,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:26:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:37,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:37,681 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:37,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-23 16:26:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:37,684 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:37,685 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:37,741 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 16:26:37,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988170104] [2021-02-23 16:26:37,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:26:37,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 16:26:37,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899189167] [2021-02-23 16:26:37,743 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 16:26:37,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:26:37,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 16:26:37,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 16:26:37,744 INFO L87 Difference]: Start difference. First operand 277 states and 299 transitions. Second operand 10 states. [2021-02-23 16:26:38,727 WARN L202 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:26:39,519 WARN L202 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2021-02-23 16:26:40,217 WARN L202 SmtUtils]: Spent 673.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2021-02-23 16:26:40,929 WARN L202 SmtUtils]: Spent 659.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:41,624 WARN L202 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:26:42,260 WARN L202 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:43,837 WARN L202 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2021-02-23 16:26:48,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:26:48,421 INFO L93 Difference]: Finished difference Result 767 states and 889 transitions. [2021-02-23 16:26:48,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-23 16:26:48,422 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 172 [2021-02-23 16:26:48,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:26:48,427 INFO L225 Difference]: With dead ends: 767 [2021-02-23 16:26:48,428 INFO L226 Difference]: Without dead ends: 605 [2021-02-23 16:26:48,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2021-02-23 16:26:48,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-02-23 16:26:48,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 510. [2021-02-23 16:26:48,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2021-02-23 16:26:48,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 569 transitions. [2021-02-23 16:26:48,735 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 569 transitions. Word has length 172 [2021-02-23 16:26:48,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:26:48,736 INFO L480 AbstractCegarLoop]: Abstraction has 510 states and 569 transitions. [2021-02-23 16:26:48,736 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 16:26:48,736 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 569 transitions. [2021-02-23 16:26:48,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-02-23 16:26:48,740 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:26:48,741 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:26:48,741 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 16:26:48,741 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:26:48,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:26:48,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1452920507, now seen corresponding path program 1 times [2021-02-23 16:26:48,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:26:48,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281272831] [2021-02-23 16:26:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:26:48,746 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:26:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:48,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:48,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:48,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:48,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:48,836 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:48,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:48,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:48,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:48,839 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:48,840 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:48,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:48,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:48,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:48,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:48,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:48,857 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:49,432 WARN L202 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:26:49,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:26:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:49,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:49,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:49,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:49,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-23 16:26:49,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:26:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:49,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:49,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:49,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:26:49,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:49,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:49,498 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:49,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:26:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:49,501 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:49,502 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:49,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:26:49,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:49,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:49,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:49,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:26:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:49,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:49,527 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:49,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-02-23 16:26:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:49,530 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:49,531 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:49,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-02-23 16:26:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:49,535 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:49,536 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:49,537 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:49,538 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:49,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:49,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:26:49,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-02-23 16:26:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:26:49,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:26:49,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:26:49,644 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 16:26:49,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281272831] [2021-02-23 16:26:49,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:26:49,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 16:26:49,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130700290] [2021-02-23 16:26:49,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 16:26:49,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:26:49,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 16:26:49,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-23 16:26:49,646 INFO L87 Difference]: Start difference. First operand 510 states and 569 transitions. Second operand 9 states. [2021-02-23 16:26:50,620 WARN L202 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:26:53,826 WARN L202 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:54,541 WARN L202 SmtUtils]: Spent 640.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:26:55,306 WARN L202 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:56,165 WARN L202 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:26:56,833 WARN L202 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2021-02-23 16:26:57,519 WARN L202 SmtUtils]: Spent 634.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:58,169 WARN L202 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2021-02-23 16:26:59,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:26:59,749 INFO L93 Difference]: Finished difference Result 1382 states and 1656 transitions. [2021-02-23 16:26:59,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-23 16:26:59,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 177 [2021-02-23 16:26:59,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:26:59,759 INFO L225 Difference]: With dead ends: 1382 [2021-02-23 16:26:59,759 INFO L226 Difference]: Without dead ends: 987 [2021-02-23 16:26:59,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-02-23 16:26:59,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2021-02-23 16:27:00,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 884. [2021-02-23 16:27:00,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 884 states. [2021-02-23 16:27:00,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 884 states to 884 states and 1010 transitions. [2021-02-23 16:27:00,131 INFO L78 Accepts]: Start accepts. Automaton has 884 states and 1010 transitions. Word has length 177 [2021-02-23 16:27:00,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:27:00,132 INFO L480 AbstractCegarLoop]: Abstraction has 884 states and 1010 transitions. [2021-02-23 16:27:00,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 16:27:00,132 INFO L276 IsEmpty]: Start isEmpty. Operand 884 states and 1010 transitions. [2021-02-23 16:27:00,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-23 16:27:00,137 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:00,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:27:00,138 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 16:27:00,138 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:00,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:00,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1512846172, now seen corresponding path program 1 times [2021-02-23 16:27:00,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:00,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765354404] [2021-02-23 16:27:00,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:00,142 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:00,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:00,211 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,212 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:00,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,213 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:00,214 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,215 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:00,216 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:00,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,217 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:00,219 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:00,807 WARN L202 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2021-02-23 16:27:00,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 16:27:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:00,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:00,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,852 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:00,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-02-23 16:27:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:00,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,861 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:00,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-02-23 16:27:00,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:00,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:00,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-02-23 16:27:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:00,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:00,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-02-23 16:27:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:00,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,872 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:00,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-02-23 16:27:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:00,890 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,890 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 16:27:00,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-02-23 16:27:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:00,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,905 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:00,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-02-23 16:27:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:00,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:00,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-02-23 16:27:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:00,911 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:00,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-02-23 16:27:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 16:27:00,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 16:27:00,915 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 16:27:00,977 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 16:27:00,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765354404] [2021-02-23 16:27:00,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 16:27:00,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 16:27:00,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133150119] [2021-02-23 16:27:00,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 16:27:00,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 16:27:00,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 16:27:00,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 16:27:00,981 INFO L87 Difference]: Start difference. First operand 884 states and 1010 transitions. Second operand 6 states. [2021-02-23 16:27:01,884 WARN L202 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2021-02-23 16:27:05,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 16:27:05,968 INFO L93 Difference]: Finished difference Result 1988 states and 2385 transitions. [2021-02-23 16:27:05,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 16:27:05,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 182 [2021-02-23 16:27:05,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 16:27:05,976 INFO L225 Difference]: With dead ends: 1988 [2021-02-23 16:27:05,976 INFO L226 Difference]: Without dead ends: 1219 [2021-02-23 16:27:05,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-02-23 16:27:05,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2021-02-23 16:27:06,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1119. [2021-02-23 16:27:06,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1119 states. [2021-02-23 16:27:06,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1274 transitions. [2021-02-23 16:27:06,423 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1274 transitions. Word has length 182 [2021-02-23 16:27:06,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 16:27:06,424 INFO L480 AbstractCegarLoop]: Abstraction has 1119 states and 1274 transitions. [2021-02-23 16:27:06,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 16:27:06,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1274 transitions. [2021-02-23 16:27:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-02-23 16:27:06,428 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 16:27:06,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 16:27:06,428 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-23 16:27:06,428 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 16:27:06,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 16:27:06,429 INFO L82 PathProgramCache]: Analyzing trace with hash 1558777507, now seen corresponding path program 1 times [2021-02-23 16:27:06,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 16:27:06,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914562594] [2021-02-23 16:27:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 16:27:06,432 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 16:27:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:27:06,504 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:27:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 16:27:06,600 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 16:27:06,808 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 16:27:06,808 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 16:27:06,809 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-23 16:27:06,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 04:27:06 BoogieIcfgContainer [2021-02-23 16:27:06,834 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 16:27:06,835 INFO L168 Benchmark]: Toolchain (without parser) took 41024.92 ms. Allocated memory was 156.2 MB in the beginning and 497.0 MB in the end (delta: 340.8 MB). Free memory was 112.5 MB in the beginning and 430.4 MB in the end (delta: -318.0 MB). Peak memory consumption was 276.8 MB. Max. memory is 8.0 GB. [2021-02-23 16:27:06,836 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 16:27:06,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.65 ms. Allocated memory is still 156.2 MB. Free memory was 111.3 MB in the beginning and 127.3 MB in the end (delta: -16.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. [2021-02-23 16:27:06,837 INFO L168 Benchmark]: Boogie Preprocessor took 154.96 ms. Allocated memory is still 156.2 MB. Free memory was 127.3 MB in the beginning and 136.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:27:06,837 INFO L168 Benchmark]: RCFGBuilder took 1779.65 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 136.6 MB in the beginning and 111.0 MB in the end (delta: 25.6 MB). Peak memory consumption was 58.0 MB. Max. memory is 8.0 GB. [2021-02-23 16:27:06,838 INFO L168 Benchmark]: TraceAbstraction took 38415.05 ms. Allocated memory was 187.7 MB in the beginning and 497.0 MB in the end (delta: 309.3 MB). Free memory was 111.0 MB in the beginning and 430.4 MB in the end (delta: -319.4 MB). Peak memory consumption was 243.2 MB. Max. memory is 8.0 GB. [2021-02-23 16:27:06,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 156.2 MB. Free memory is still 130.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 656.65 ms. Allocated memory is still 156.2 MB. Free memory was 111.3 MB in the beginning and 127.3 MB in the end (delta: -16.0 MB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 154.96 ms. Allocated memory is still 156.2 MB. Free memory was 127.3 MB in the beginning and 136.6 MB in the end (delta: -9.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1779.65 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 136.6 MB in the beginning and 111.0 MB in the end (delta: 25.6 MB). Peak memory consumption was 58.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 38415.05 ms. Allocated memory was 187.7 MB in the beginning and 497.0 MB in the end (delta: 309.3 MB). Free memory was 111.0 MB in the beginning and 430.4 MB in the end (delta: -319.4 MB). Peak memory consumption was 243.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 855]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L86] int waterLevel = 1; [L87] int methaneLevelCritical = 0; [L358] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L561] int pumpRunning = 0; [L562] int systemActive = 1; [L898] int cleanupTimeShifts = 4; [L971] int retValue_acc ; [L972] int tmp ; [L976] FCALL select_helpers() [L977] FCALL select_features() [L978] CALL, EXPR valid_product() [L889] int retValue_acc ; [L892] retValue_acc = 1 [L893] return (retValue_acc); [L978] RET, EXPR valid_product() [L978] tmp = valid_product() [L980] COND TRUE \read(tmp) [L982] FCALL setup() [L983] CALL runTest() [L965] CALL test() [L783] int splverifierCounter ; [L784] int tmp ; [L785] int tmp___0 ; [L786] int tmp___1 ; [L787] int tmp___2 ; [L790] splverifierCounter = 0 [L792] COND TRUE 1 [L794] COND TRUE splverifierCounter < 4 [L800] tmp = __VERIFIER_nondet_int() [L802] COND TRUE \read(tmp) [L804] CALL waterRise() [L104] COND TRUE waterLevel < 2 [L105] waterLevel = waterLevel + 1 [L804] RET waterRise() [L810] tmp___0 = __VERIFIER_nondet_int() [L812] COND FALSE !(\read(tmp___0)) [L820] tmp___2 = __VERIFIER_nondet_int() [L822] COND FALSE !(\read(tmp___2)) [L828] tmp___1 = __VERIFIER_nondet_int() [L830] COND TRUE \read(tmp___1) [L832] CALL stopSystem() [L761] COND FALSE !(\read(pumpRunning)) [L768] systemActive = 0 [L832] RET stopSystem() [L839] CALL timeShift() [L568] COND FALSE !(\read(pumpRunning)) [L575] COND FALSE !(\read(systemActive)) [L583] CALL __utac_acc__Specification3_spec__1() [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L53] CALL, EXPR isMethaneLevelCritical() [L125] int retValue_acc ; [L128] retValue_acc = methaneLevelCritical [L129] return (retValue_acc); [L53] RET, EXPR isMethaneLevelCritical() [L53] tmp = isMethaneLevelCritical() [L55] COND FALSE !(\read(tmp)) [L59] CALL, EXPR getWaterLevel() [L157] int retValue_acc ; [L160] retValue_acc = waterLevel [L161] return (retValue_acc); [L59] RET, EXPR getWaterLevel() [L59] tmp___0 = getWaterLevel() [L61] COND TRUE tmp___0 == 2 [L63] CALL, EXPR isPumpRunning() [L675] int retValue_acc ; [L678] retValue_acc = pumpRunning [L679] return (retValue_acc); [L63] RET, EXPR isPumpRunning() [L63] tmp___1 = isPumpRunning() [L65] COND FALSE !(\read(tmp___1)) [L69] CALL __automaton_fail() [L855] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 43 procedures, 662 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 38.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 31.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1371 SDtfs, 2527 SDslu, 1671 SDs, 0 SdLazy, 3928 SolverSat, 868 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1119occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 379 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...